In re Rights to Waters of Yakima River Drainage Basin (Acquavella) ( 2013 )


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    IN CLERKS OFFICE .        •
    IUPREME COURI', STATE OF WABIIIGTON
    .DATE: Q~~~~3
    71-l_a-_.o£; . c~--~
    M.
    CHIEF   TICii
    IN THE SUPREME COURT OF THE STATE OF WASHINGTON
    In the Matter of the Determination of the
    Rights to the Use of the Surface Waters of
    the Yakima River Drainage Basin, in
    Accordance with the Provisions of Chapter
    90.03, Revised Code of Washington
    NO. 86211-7
    STATE OF WASHINGTON,
    DEPARTMENT OF ECOLOGY,
    Respondents/Cross-Appellant,
    ENBANC
    v.
    JAMES J. ACQUAVELLA; UNITED
    STATES; YAKAMA NATION;
    AHTANUM IRRIGATION DISTRICT;                         F i1 ed   _   ___.M.u!-A.lllR--lOL.ll7'--L2-'-'-014L3_
    JOHN COX DITCH COMPANY; LA
    SALLE HIGH SCHOOL; DONALD and
    SYLVIA BRULE; JEROME DURNIL; and
    ALBERT LANTRIP; DEPARTMENT OF
    NATURAL RESOURCES,
    Appellants/Cross-Respondents.
    STEPHENS, J.-This case concerns the adjudication of water rights in the
    Yakima River Basin. The parties, as appellants and cross-appellants, bring various
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    challenges to the conditional final order of the trial court determining the parties'
    water rights. The Court of Appeals transferred the case to this court for direct
    review.
    We affirm the trial court's determination that the decision in United States v.
    Ahtanum Irrigation District, 
    330 F.2d 897
     (9th Cir. 1964) was an adjudication of
    nontribal water rights, but we reverse the trial court's decision concerning the
    quantification of irrigable land on the reservation, remanding for further
    proceedings.     We also reverse the trial court's determinations regarding the
    Yakama Indian Nation's (the Nation) right to store water, affirm the trial court's
    conclusions regarding the rights of nontribal claimants to so-called excess water,
    reverse the trial court's application of the "future development" excuse under
    RCW 90.14.140(2)(c) for nonuse of a water right, affirm the trial court's denial of
    several individual water rights claims, and remand to the trial court to correct an
    apparent clerical error regarding an individual parcel belonging to the Chancery
    (the Catholic Bishop ofYakima). 1
    1
    At the close of briefing, several assignments of error were uncontested. First, the
    Nation assigned error to the trial court's determination that the Nation's right would be
    held in the name of the "United States of America, Bureau of Indian Affairs, as trustee
    for the Yakama Nation, Allottees, and Non-Indian Allottee Successors." Clerk's Papers
    (CP) at 174 (Conditional Final Order). The Nation asks that the reference to "Non-Indian
    Allottee Successors" be struck. No party has presented an argument to the contrary. We
    therefore reverse the trial court and remand for a revision of the name by which the
    Nation's right is held.
    Second, the Nation assigned error to the trial court's refusal to recognize a right
    for the Nation to divert water from Ahtanum Creek between April 1 and April 14 of each
    year, subject only to John Cox's rights. No party has contested this assignment of error.
    We remand to the trial court for confirmation of a right for the Nation to divert water
    from Ahtanum Creek in its entirety from April 1 to April 14, subject to John Cox's rights
    and subject to minimum instream flows necessary to support fish and other aquatic life.
    -2-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    BACKGROUND
    By way of geographic orientation, the Yakima River is a tributary of the
    Columbia River, commencing at the crest of the Cascade Range near Snoqualmie
    Pass and generally flowing southeasterly for 175 miles before emptying into the
    Columbia. Dep't ofEcology v. Acquavella, 100 Wn.2d 651,652-53, 
    674 P.2d 160
    (1983) (Acquavella I). Its major tributaries are the Kachess River, the Cle Elum
    River, the Teanaway River, Ahtanum Creek, Toppenish Creek, Satus Creek, and
    the Naches River. Id. at 653. The case before us focuses on the rights to the water
    of one of those major tributaries, Ahtanum Creek. The adjudication of the
    Ahtanum Creek Subbasin has considerable history behind it. Before turning to the
    merits of the present dispute, it is helpful to consider the factual background and
    procedural posture of this case.
    General Background
    In the sprmg of 1977, meteorologists predicted record drought for the
    Yakima River Basin. Sidney P. Ottem, The General Adjudication of the Yakima
    River: Tributaries for the Twenty-First Century and a Changing Climate, 23 J.
    ENVTL. L. & LITIG. 275, 286 (2008). Up to that point, several water rights holders
    in the basin had been exercising their rights pursuant to a 1945 consent judgment
    Third, the Nation claims that the trial court erred in confirming a nondiversionary
    stock water right to the Department of Natural Resources (DNR) with a priority date
    senior to all other, except the Nation's instream right to fish, without adequate evidence
    as to the relative priority dates. DNR does not contest this assignment of error. We
    remand for the entry of findings of fact on the priority dates and further conclusions of
    law as appropriate.
    -3-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    entered in federal court. Id. at 285. 2 The drought prediction, which threatened to
    severely curtail available water in the basin, prompted several irrigation districts to
    ask the federal court to modify the 1945 consent judgment. Id. at 286. The Nation
    sought to intervene. The federal court suggested a state court general adjudication.
    Id. 3
    In October 1977, the Department of Ecology (DOE), pursuant to chapter
    90.03 RCW, filed an action to seek a general adjudication of the surface water in
    the Yakima River Basin.           Acquavella I, 100 Wn.2d at 652.           "A general
    adjudication, pursuant to RCW 90.03, is a process whereby all those claiming the
    right to use waters of a river or stream are joined in a single action to determine
    water rights and priorities between claimants." Id. at 652. It is akin a quiet title
    action. Ottem, supra, at 285. The adjudication is overseen by the superior court in
    which the action is filed but the court may appoint a referee or other judicial officer
    to assist the court. RCW 90.03.160.
    The Yakima River Basin encompasses 6,062 square miles. Acquavella I,
    100 Wn.2d at 654. Due to its size, the general adjudication involves thousands of
    parties. Id. at 653. In 1989, the trial court split the case into four procedural
    pathways, providing that the rights of the parties would be determined in the
    following order: (1) federal reserved right for Indian claims, (2) federal reserved
    2
    Kittitas Reclamation Dist. v. Sunnyside Valley Irrigation Dist., No. 21 (E.D.
    Wash. Jan. 31, 1945) (order granting consent decree).
    3
    Although the Department of Ecology took up the federal court's suggestion and
    filed a state court general adjudication, the challenge to the consent decree proceeded in
    federal court. The decree was affirmed in Kittitas Reclamation District v. Sunnyside
    Valley Irrigation District, 
    626 F.2d 95
     (9th Cir. 1980).
    -4-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    rights for non-Indian claims, (3) state-based rights of major claimants, and (4)
    state-based rights for other claimants, by subbasin. Dep 't of Ecology v. Yakima
    Reservation Irrigation Dist., 
    121 Wash. 2d 257
    , 262, 
    850 P.2d 1306
     (1993)
    (Acquavella II).     Given its scope, this is not the first time the Acquavella
    adjudication has been before this court, but this is the first time we have considered
    individual rights to the waters of Ahtanum Creek Subbasin in the context of this .
    adjudication.
    The case before us now is part of the adjudication of the water rights for the
    surface waters in "Subbasin Number 23" of the Yakima River Basin, also known
    as the "Ahtanum Creek Subbasin." Proceedings concerning Subbasin Number 23
    began in approximately 1993. See Clerk's Papers (CP) at 1500. The Ahtanum
    Creek Subbasin is the final subbasin to be considered m the larger water
    adjudication of the Yakima River Basin that began m 1977.                     Br. of
    Appellant/Resp't John Cox Ditch Co. (Br. of John Cox) at 2. It therefore appears
    to fall into the final pathway-state-based rights for other claimants by subbasin-
    but in fact the Ahtanum Creek Subbasin is "extraordinary" among the subbasins of
    the Yakima River Basin. CP at 977. Ahtanum Creek forms the northern boundary
    of the Yakama Indian Reservation. CP at 1501. The subbasin is thus home to not
    only individual water rights holders, but also major claimants including the United
    States as trustee to the Nation, the Nation, the Ahtanum Irrigation District, and the
    John Cox Ditch Company (John Cox). Accordingly, the claimed rights of all the
    individual holders in the subbasin, as well as the claimed rights of those major
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    Dep 't of Ecology v. Acquavella, et al., 86211-7
    claimants, were consolidated for presentation in one proceeding. Yakama Nation's
    Corrected Opening Br. (Yakama Nation Br.) at 7.
    The proceeding was presided over first by Judge Walter A. Stauffacher, then
    by Court Commissioner Sydney P. Ottem, and then by Judge F. James Gavin. In
    2002, having already made a number of discrete rulings and conducted fact-
    finding, the trial court issued a 481-page report of the court concerning the water
    rights for the Subbasin Number 23 (Ahtanum Creek). It incorporated the earlier
    rulings and made a number of rulings apportioning the water.              CP at 974
    (beginning of report).      In March 2003, the parties filed their "exceptions," i.e.,
    objections to the 2002 report. CP at 725. Additional evidentiary hearings took
    place.       In 2008, the court issued a 388-page supplemental report.    CP at 722.
    Another round of exceptions followed. CP at 532, 456. In April 2009, having
    considered all of the evidence and exceptions, the trial court issued a conditional
    final order, incorporating or revising its previous rulings. CP at 129. In May 2009,
    it issued an order on motions for reconsideration, granting several motions for
    reconsideration while denying others, incorporating those changes into its
    conditional final order. 4 CP at 74. This appeal followed.
    4
    The relevant rulings are Memorandum Opinion Re Ahtanum Watershed
    Practicably Irrigable Acreage (1994) (CP at 1500-13); Report of the Court Concerning
    the Water Rights for the Yakama Indian Nation (1995) (CP at 3913-4005); Report of the
    Court Concerning the Water Rights for the Subbasin No. 23 (Ahtanum Creek) (2002) (CP
    at 974-1459); Memorandum Opinion Re: Ahtanum Creek Threshold Legal Issues (2003)
    (CP at 942-72); Memorandum Opinion La Salle High School Subbasin No. 23
    (Ahtanum) (2006) (CP at 932-39); Supplemental Report of the Court Concerning the
    Water Rights for Subbasin No. 23 (2008) (CP at 722-931 (Part I) and CP at 539-721 (Part
    II)); Order Ruling on Certain Exceptions to the Supplemental Report of the
    Court/Proposed Conditional Final Order (2008) (CP at 532-38); and Memorandum
    -6-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    THE PARTIES
    We believe it is helpful at the outset to identify the various parties involved
    in this proceeding and briefly summarize their interests.
    1. The United States
    The United States acts as trustee for the Nation's federal reserved water
    rights. Federal reserved water rights are those rights impliedly reserved in the
    agreement between an Indian nation and the United States government creating an
    Indian reservation. Also called Winters rights after the case that first recognized
    them, such rights presume that when a reservation was established by treaty,
    sufficient water was reserved to meet the present and future needs of the
    reservation. See Winters v. United States, 
    207 U.S. 564
    , 
    28 S. Ct. 207
    , 
    52 L. Ed. 340
     (1908); Acquavella II, 121 Wn.2d at 274.       These rights are federal common-
    law-based rights, as opposed to rights that are subject to state water code
    regulation. See Acquavella II, 121 Wn.2d at 265-66.
    2. The Nation
    Although the United States acts as trustee for the Nation's water rights, the
    Nation joins this litigation in its own right. In 1855, 14 confederated tribes and
    bands in the Yakima Valley signed a treaty with the United States, establishing the
    Yakama Indian Reservation and becoming the Yakama Indian Nation. !d. at 266.
    Opinion Exceptions to the Supplemental Report of the Court and Proposed Conditional
    Final Order Subbasin No. 23 (Ahtanum) (2009) (CP at 456-531). The Conditional Final
    Order Subbasin No. 23 (Ahtanum) (2009) is at CP 114-16, with the schedule of water
    right appearing at CP at 117-23. An Order on Motions for Reconsideration to the
    Memorandum Opinion and Conditional Final Order Subbasin No. 23 (Ahtanum) (2009)
    (CP at 74-80) completes the trial court's pertinent rulings.
    -7-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    In addition to its treaty-reserved rights for sufficient water to meet the present and
    future needs of its reservation, the Nation also has a right that dates from time
    immemorial to adequate water to sustain fish and other aquatic life in Ahtanum
    Creek.
    3. DOE
    DOE is the state agency charged with administering state water law. It was
    also, as noted, the party that initiated this action in an effort to determine the
    relative rights and priorities of the thousands of water-rights holders in the Yakima
    River Basin.      DOE challenges, in part, a specific ruling of the trial court
    concerning the individual claimant, Clifford and Doris Hagemeier.
    4. Department ofNatural Resources (DNR)
    DNR manages 25,640 acres of state trust lands for the support of common
    schools within the Ahtanum Creek Subbasin. These lands have been mostly used
    for grazing of livestock. Br. of Def./Resp't Wash. State Dep't of Nat'l Resources
    (Br. ofDNR) at 1-2.
    5. John Cox Ditch Company
    John Cox is a private corporation formed in the late-1880s. CP at 1252-53.
    It diverts water from Ahtanum Creek and delivers it to nonriparian land
    (nonadjacent land) on the north side of the creek (near Tampico, Washington) for
    irrigation of orchards, hay, and grain, as well as for stock and domestic purposes.
    !d.
    -8-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    6. Ahtanum Irrigation District (or AID)
    AID also delivers water to users on the north side of the creek. AID owns
    no canals, diversions works, or distribution systems. "Rather, the creek channel is
    the conveyance work and the individual right holders divert water from the creek."
    CP at 1013.     For this reason, the trial court determined that in order for it to
    establish AID's rights, it was required to determine the rights of the individuals
    who make up AID. Id. AID therefore brings challenges that are relevant to its
    membership as a whole but also raises discrete issues pertaining to individual
    landowners, namely, Hull Ranches, the Chancery, and parcels of land owned by
    Claudia Richardson, Benn and Carol Splawn, and David and Christine Lynde. See
    CP at 897. AID also represents the interests ofthe Hagemeiers in this matter.
    7. La Salle High School, Donald and Sylvia Brule, Jerome Durnil, and Albert
    Lantrip
    These appellants are individual landowners.       While their claims are not
    necessarily aligned, neither are they in conflict with one another.
    John Cox, AID, and La Salle et al. are collectively referred to as "the
    Northside parties/users" in much of the briefing, as their parcels are on the north
    side of Ahtanum Creek. This opinion adopts that nomenclature when referring
    collectively to the nontribal parties. Having set forth the various parties involved
    here, we will now summarize the operative legal decisions preceding this
    adjudication.
    -9-
    Dep 't of Ecology v. Acquavella, et a!., 86211-7
    LEGAL HISTORY OF AHTANUM CREEK SUBBASIN
    Synthesizing the various decisions adjudicating and apportioning the rights
    to Ahtanum Creek waters is no small task.                  Relevant precedent includes
    agreements between the United States and the Nation, several decisions from this
    court, and decisions from the federal courts.
    1. 1855 Treaty
    On June 9, 1855, the Nation signed a treaty with the United States, creating
    the Yakama Reservation. CP at 1013. As we recognized in Aquavella II:
    During the last half of the 19th century, settlement of the West was
    encouraged as part of this country's policy of "Manifest Destiny". The
    need to resolve conflicts between the effects of this westward expansion
    and the Indians' traditional way of life often resulted in treaties establishing
    reservations. In reality the Indians had little choice but to sign the treaties,
    giving up land in exchange for money.
    121 Wn.2d at 266. As explained above, the Winters doctrine instructs that a treaty
    creating a reservation carries an implied right to water sufficient to meet the
    present and future needs of the reservation. Id. at 274. The purpose ofthe Yakama
    Reservation has been recognized as agriculture-based activities and fishing. Id.
    2. 1908 Code Agreement
    By 1908, the United States government had embarked on a serious effort to
    establish irrigation systems for arid lands in 17 western states. The secretary of the
    interior was directed to build and operate dams, reservoirs, and canals in order to
    achieve this goal. Id. at 267. In 1905, the United States began withdrawing water
    from the Yakima River. Id. It soon became clear, however, that the river was
    -10-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    overappropriated and the reclamation effort was compromised. The United States
    introduced several programs in order to limit the draw from the river by individual
    users, but these were not as successful as hoped. Id. at 267-68. In 1908, the chief
    engineer of irrigation for the Bureau of Indian Affairs, W.H. Code, entered into an
    agreement on behalf of the Nation with the United States secretary of the interior.
    The so-called "Code Agreement" apportioned the waters of Ahtanum Creek so that
    the Nation received 25 percent of the natural flow and the Northside users received
    75 percent. CP at 1014.
    3. 1926 State v. Achepohl decision (affirming the "Achepohl Decree")
    In the mid-1920s, the Yakima Superior Court oversaw an adjudication of the
    rights of water users situated north of Ahtanum Creek. CP at 1014. "Signatories
    and non-signatories to the 1908 Code Agreement were divided into 31 separate
    priority classes based on a 'first in time, first in right' analysis." Id. The superior
    court entered a decree quantifying their rights, the so-called "Achepohl Decree."
    Id. The Achepohl Decree was affirmed by this court. State v. Achepohl, 
    139 Wash. 84
    , 101, 
    245 P. 758
     (1926). Certificates were issued showing the measure
    of each individual water right confirmed in the proceeding; these are referred to by
    the parties here as "Achepohl Certificates."       According to AID, the Achepohl
    Decree is still used to apportion the 75 percent flow from Ahtanum Creek among
    the Northside users. CP at 1014. The Nation was not a party at any stage of the
    Achepohl proceeding. Yakama Indian Nation (YIN) Ex. 323.
    -11-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    4. Federal Cases
    a. United States v. Ahtanum Irrigation Dist., 
    236 F.2d 321
     (9th Cir. 1956)
    (Ahtanum I)
    In 1947, the United States on behalf of the Nation filed an action in the
    United States District Court for the Eastern District of Washington seeking to
    invalidate the Code Agreement.          CP at 10 15.   The trial court dismissed the
    complaint. On appeal, the United States Court of Appeals for the Ninth Circuit
    reversed the trial court's dismissal of the complaint but ultimately held that the
    Code Agreement was valid. Ahtanum I, 236 F.2d at 338, 342. The Ahtanum I
    court recognized that the Nation had Winters rights by virtue of the 1855 treaty
    creating the Yakama Reservation. Id. at 325. It thus questioned whether the Code
    Agreement's 25 percent allotment ran counter to the Nation's Winters rights. Id. at
    326. And, it was conceded that the needs of the reservation required substantially
    the whole flow of the stream. Id. at 325. The Ahtanum I court explained that the
    Achepohl Decree had no effect on the Nation's reserved water rights. "It is too
    clear to require exposition that the state water right decree could have no effect
    upon the rights of the United States. Rights reserved by treaties such as this are not
    subject to appropriation under state law, nor has the state power to dispose of
    them."     Id. at 328.      Ultimately, though, it refused to invalidate the Code
    Agreement.
    But we are constrained to hold that since some arrangement for the
    apportionment of the Ahtanum waters was the sort of thing which the
    Secretary was authorized to do by the grant of general powers of
    supervision and management, he therefore had the power to make the 1908
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    Dep 't of Ecology v. Acquavella, et al., 86211-7
    agreement. The Secretary's mistakes, his poor judgment, his overlooking
    or ignoring of the true measure of the Indians' rights, his lack of bargaining
    skill or determination may add up to an abuse of his power, but do not
    [negate] it, or make his act ultra vires.
    ld. at 338.    The Ahtanum I court reasoned that but for the Code Agreement,
    Northside users would have no right under state law to apportion any part of the
    Ahtanum Creek flow, "except in strict subordination of the prior and better rights
    of the United States as trustee for the Indians." ld. at 340. It thus held that the
    Northside users' 75 percent interest in the creek was limited by their needs as of
    1908, and everything "not clearly shown to have been granted" to the Northside
    users "must be construed as reserving to the Indians." ld. at 341. Accordingly, the
    Ninth Circuit remanded the case to the trial court to determine the extent of the
    rights of the parties with respect to the waters of the stream. Id. at 339, 341-42. In
    doing so, however, it noted that the United States had shown and proved the
    quantities of water required by the reservation lands. Jd. at 340.
    b. United States v. Ahtanum Irrigation Dist., 
    330 F.2d 897
     (9th Cir.
    1964) (Ahtanum II or "Pope Decree")
    Following the remand of Ahtanum l, the District Court for the Eastern
    District of Washington entered findings and conclusions of law based on a special
    master's report. Ahtanum II, 330 F.2d at 902. The United States again appealed
    the trial court determination. It complained that the special master and the trial
    court had not followed the instructions of the Ahtanum I court to determine the
    individual rights of Northside users but had instead conducted an "'in gross"' or
    "'aggregate"' determination. ld. at 910. Judge Walter L. Pope, writing for the
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    Dep't of Ecology v. Acquavella, eta!., 86211-7
    Ahtanum II court, acknowledged that it would have been a correct reading of the
    earlier opinion in Ahtanum I if the trial court had determined each Northside users
    individual right. !d. at 911. But the Ahtanum II court observed that there were
    considerations that warranted the district court's decision not to extend its decree
    so far.       For example, the court explained that Washington's water code put the
    state in a better position than a federal court to manage the distribution and control
    functions of water rights. !d. at 911-12. But even though the Ahtanum II court
    appeared to appreciate the trial court's exercise of discretion in not individually
    adjudicating the water rights of Northside users despite what Ahtanum I seemed to
    require, the Ahtanum II court in fact found that the record before it was sufficient
    to order, adjudge, and decree a division of the waters of Ahtanum Creek. !d. at
    914-15. It thus awarded to the parties, from the beginning of the irrigation season
    through July 10 of each year, the following:
    a. To defendants, for use of their lands north of Ahtanum Creek,
    seventy-five per cent of the natural flow of Ahtanum Creek, as measured at
    the north and south gauging stations, provided that the total diversion for
    this purpose shall not exceed 46.96 cubic feet per second, and provided that
    when the said measured flow exceeds 62.59 cubic feet per second
    defendants shall have no ri~M to the excess, except in subordination to the
    higher rights of the plaintiff. 51
    b. To plaintiff, for use of Indian Reservation lands south of Ahtanum
    Creek, twenty-five per cent of the natural flow of Ahtanum Creek, as
    measured at the north and south gauging stations; provided that when that
    natural flow as so measured exceeds 62.59 cubic feet per second, all the
    excess over that figure is awarded to plaintiff, to the extent that the said
    water can be put to a beneficial use.
    5
    "A cubic foot per second (cfs) is a quantity of 1 cubic foot or 7.48 gallons,
    passing a given point in 1 second. An acre foot (af) is 1 foot in depth covering an acre, or
    43,560 cubic feet, or 325,851 gallons. One million gallons per day equals 3.07 acre feet."
    Acquavella II, 121 Wn.2d at 263 n.5.
    -14-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    c. Plaintiff may divert such water from the south fork of Ahtanum
    Creek as can be beneficially used for the individual diversion into the
    Yak[a]ma Indian Reservation lying above the main Bureau of Indian
    Affairs diversion; provided, however, that the water diverted to such
    individual diversion shall be charged against and deducted from the overall
    award set forth in 'b' above.
    d. To the plaintiff, for the lower Bureau of Indian Affairs diversion,
    a daily diversion of water representing five per cent of the natural flow of
    Ahtanum Creek as measured at the north and south fork gauging stations.
    This award shall represent plaintiff's interest in the return flow of the main
    stem of Ahtanum Creek, and the award to defendants shall be conditioned
    upon plaintiff receiving this flow of water at the lower Bureau of Indian
    Affairs diversion.
    e. To defendants, all the rest of the return flow in the main stem of
    Ahtanum Creek, and all the return flow in Hatton and Ba[]chelor Creeks.
    f. Any water loss which may occur between the north and south fork
    gauging stations, and the defendants' Hatton Creek diversion, is to be
    absorbed by defendants; plaintiff being entitled to its full stated percentage
    of the measured flow, and defendants taking the balance.
    Ahtanum II, 330 F.2d at 915. In addition, the Ahtanum II court decreed that after
    July 10 of each year, "all the waters of Ahtanum Creek shall be available to, and
    subject to diversion by, the plaintiff for use on Indian Reservation lands south of
    Ahtanum Creek, to the extent that the said water can be put to a beneficial use."
    ld. Finally, the Ahtanum II court "reserve[d] jurisdiction to make such further
    orders as may be necessary to preserve and protect the rights herein declared and
    established, should a subsequent change in the situation or condition of the parties
    hereto so require." ld. at 915. This award is referred to by the parties as the "Pope
    Decree."
    5. Acquavella in the State Appellate Courts
    As noted, the ongoing adjudication of the Yakima River Basin has
    previously brought the Acquavella case to the Court of Appeals and to this court.
    In Acquavella I, we considered whether adequate notice of the Acquavella
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    Dep 't of Ecology v. Acquavella, et al., 86211-7
    summons was given by DOE and held that it was.                  100 Wn.2d at 659.       In
    Acquavella II, we considered several questions pertinent to the rights of the Nation.
    121 Wn.2d at 272-73 (summarizing the issues before the court). 6 In Department of
    Ecology v. Acquavella, 
    131 Wash. 2d 746
    , 
    935 P.2d 595
     (1997) (Acquavella III), we
    considered a challenge to the trial court's award to the Yakima-Tieton Irrigation
    District, which is not a party in this proceeding. Id. at 750. Finally, in Department
    of Ecology v. Acquavella, 
    112 Wash. App. 729
    , 
    51 P.3d 800
     (2002) (Acquavella IV),
    Division Three of the Court of Appeals affirmed the trial court's ruling that a
    decree from a different adjudication, declaring various water rights in a tributary to
    the Yakima River (the Teanaway River), meant the doctrine of res judicata barred
    a claimant from relitigating those rights in the Acquavella proceeding. I d. at 732.
    CONTENTIONS OF THE PARTIES ON APPEAL
    Relevant to the parties' arguments is a preliminary discussion of the
    "practicably irrigable acreage" (PIA) standard. The PIA standard is a measure of
    the quantity of water available to irrigate a reservation and "calculates the amount
    of water sufficient to irrigate all the practicably irrigable acreage on a reservation."
    Corrected Br. of Appellant The United States (Br. of United States) at 8 (citing
    Arizona v. California, 
    373 U.S. 546
    , 600, 
    83 S. Ct. 1468
    , 
    10 L. Ed. 2d 542
     (1963)
    (Arizona I), overruled on other grounds by California v. Uf!ited States, 
    438 U.S. 645
    , 
    98 S. Ct. 2985
    , 
    57 L. Ed. 2d 1018
     (1978)). PIA thus does not measure merely
    6
    No party has argued that Acquavella II has any preclusive or controlling effect
    here.
    -16-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    how much land has historically been irrigated, or what is presently being irrigated,
    but how much land is and could feasibly be irrigated in the future. See Arizona I,
    373 U.S. at 600. 7
    Below, the trial court concluded in 1994 that the decisions in Ahtanum I and
    II quantified the acreage that can be irrigated on the Yakama Reservation and that
    "the doctrine of res judicata applies to prevent relitigation of the already judicially
    determined irrigable acreage." CP at 1503. The trial court later noted, however,
    that "PIA, in its traditional sense, was found not to apply to Ahtanum Creek," CP
    at 1018, acknowledging that Ahtanum did not expressly discuss the PIA standard.
    But, wrote the trial court in. its 1994 memorandum opinion regarding the PIA
    standard, it was clear from the Pope Decree that the federal court was making
    provision for the future needs of the Nation. CP at 1508-12. Ultimately, the trial
    court looked to the record established in Ahtanum I and II to determine that the
    reservation's practicably irrigable acreage is 4,107.61 acres. We turn now to the
    parties' specific arguments.
    1. The United States/The Nation
    The United States maintains that the trial court erred when it concluded
    quantification of the Nation's water right was litigated in the Ahtanum decisions.
    It argues that the Ahtanum court did not rely on the PIA standard. The United
    States asks that this court remand the case to the trial court for a determination
    7
    In Acquavella II, we opined that the future of the PIA standard was uncertain.
    121 Wn.2d at 275. To date, it is still the standard by which reservation irrigation water
    rights are measured.
    -17-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    under the practicably irrigable acreage evidence offered by the United States,
    which puts the total at 6,381.3 acres. Br. of United States at 19-21. The United
    States also argues that the trial court erred when it limited the reservation's water
    use to the irrigation season from April 1 to October 1. !d. at 39. The United States
    contends that the Pope Decree allows it to exercise its treaty rights and divert water
    year-round. The United States also challenges the trial court's determination that
    the Pope Decree precludes the Nation from exercising a storage right, i.e., the right
    to keep diverted water in a storage facility on the reservation for future use. !d.
    In addition, the United States argues that the trial court improperly included,
    in its confirmation of the United States' right, a number of non-Indian successors
    to what was once tribal land. The United States contends that it does not hold
    water rights in trust for such individuals and asks this court to direct the trial court
    to revise the United States' claim accordingly. Br. of United States at 44.
    Finally, the United States challenges that the trial court's description of its
    irrigation right as shared with Northside users between April 1 and April 15 as
    erroneous. In fact, argues the United States, other than John Cox, no Northsider
    users' irrigation season begins before April 15. Thus, the United States argues that
    between April 1 and April 14, it is entitled to all the flow from the creek available
    for irrigation, except for the John Cox share.
    The Nation joins in all of these arguments. In addition, it argues that this
    court should reverse the trial court's ruling that Northside users who had rights
    confirmed in the Pope Decree may take, when available, any excess water beyond
    -18-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    that to which the Nation is entitled. The Nation argues that excess water does not
    exist as a matter of law. Y akama Nation Br. at 4 7. The Nation also argues that the
    trial court erred when it ruled that Northside parties have a priority date for
    nondiversionary stockwater rights senior to the Nation's treaty irrigation rights,
    absent proof of that priority date.       The Nation asks this court to reverse that
    determination and remand for an evidentiary hearing on the priority date of that
    right.
    2. DOE
    DOE cross-appeals on the issue of whether the trial court correctly
    interpreted RCW 90.14.140(2)(c). The trial court relied on the statute to confirm
    the water right of an individual user, the Hagemeiers.             After five years of
    consecutive nonuse of a water right, relinquishment follows unless an excuse for
    nonuse under RCW 90.14.140(2) applies. DOE argues that the excuse upon which
    the Hagemeiers relied under the statute is not supported by evidence in the record.
    It asks for reversal on this issue. DOE also challenges AID's standing to litigate
    this claim on behalf of the Hagemeiers. Resp't/Cross-Appellant State of Wash.,
    Dep't of Ecology's Reply Br. (DOE Reply Br.) at 9.
    In addition, DOE responds to the arguments of the appellants. DOE agrees
    with the United States and the Nation that the trial court should have used the
    practicably irrigable acreage standard, rather than relying on the federal Ahtanum
    litigation, to quantify the reservation's irrigation right, and that the trial court erred
    in holding there was no right to store water, no right to take water outside the
    -19-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    irrigation season, and no exclusive right (save John Cox's right) to the water
    between April 1 and April 14 of each year. DOE further agrees that the trial court
    confirmed stockwater rights for off-reservation users without sufficient evidence
    showing those rights carry a priority date senior to that of the 1855 treaty.
    However, DOE also agrees with the Northside users that excess water-that
    is, water not put to beneficial use by the Nation-should be available for allocation
    under state water law to Northside users.
    3. DNR
    DNR files briefing on the only issue involving it: whether the trial court
    erred in confirming a nondiversionary stockwater right for DNR with a priority
    date senior to the Nation's treaty irrigation rights.          "DNR concedes that this
    priority date does not reflect the evidence in the record concerning DNR' s
    acquisition and use of its lands." Br. of DNR at 4. It asks this court to remand to
    the trial court for entry of findings of fact on this issue.
    4. John Cox
    In proceedings below, John Cox urged the trial court to confirm "junior"
    water rights. Generally, a "junior water right" is a later-appropriated right with a
    later priority date than a "senior" water right. See Br. of the United States as
    Cross-Resp't to Brs. of Appellants John Cox Ditch Co., Ahtanum Irrigation Dist.,
    and La Salle, et al. (Resp. Br. of United States) at 4. Here, however, John Cox
    -20-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    uses the term "junior right" to mean a right to irrigate lands not recognized in the
    Pope Decree. 8 The trial court refused to recognize such right. CP at 457.
    John Cox also asked the trial court to recognize a right to "excess water."
    As John Cox formulates it, excess water is water beyond that needed to satisfy all
    confirmed water rights on and off the reservation and needed to satisfy minimum
    instream flow to support fish and aquatic life in the creek. See Br. of John Cox
    at 8.
    John Cox asked the trial court to confinn a right to excess water for two
    groups or classes: (1) claimants (such as John Cox) who were parties to the Code
    Agreement and the Achepohl Decree, but who, by virtue of the right confirmed to
    them in the Pope Decree, are receiving less than allocated to them under the
    Achepohl Decree and (2) claimants who were denied a right under the Pope Decree
    to participate in the Code Agreement allocation. Id. at 21-22.
    The trial court in an initial ruling agreed with John Cox that excess water
    was available for both classes of claimants. CP at 1087-88. However, the court
    later amended its decision and ruled that when excess water exists, it "can only be
    used on lands for which rights were recognized in the Pope Decree and, therefore,
    cannot be used as 'junior rights.'" CP at 457-58.
    John Cox challenges this determination. The trial court erred, John Cox
    argues, because it mistakenly viewed Ahtanum I and II to have been a de facto
    8
    An appendix to Ahtanum II listed all the lands with a right confirmed by the Pope
    Decree.
    -21-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    adjudication of individual Northside user water rights, whereas those cases were
    merely an allocation of water between the reservation and all Northside users.
    John Cox contends that the Ahtanum cases trigger neither res judicata nor collateral
    estoppel on this issue. Moreover, Jolu1 Cox believes the trial court's ruling ignores
    state-based rights under the Achepohl Decree.
    In addition, John Cox asks this court to reverse the trial court's
    determination that it was not entitled to a post-July 10 water right, outside the
    irrigation season.    John Cox asks that a post-July 10 right to excess water be
    confirmed, subordinate only to the Nation's rights.
    Finally, John Cox challenges a limitation placed by the trial court on John
    Cox's "excess water" right award.
    5. AID
    AID joins John Cox in arguing that the trial court erred in its determination
    involving a "junior right" to "excess water." The use of excess water, argues AID,
    must be governed by state law under the provisions of the Achepohl Decree. AID
    faults the trial court for failing to recognize that nothing in Ahtanum I or II should
    or can be read to conflict with the Achepohl Decree.          See Br. of Appellant
    Ahtanum Irrigation District (Br. of AID) at 21-27.          AID believes the same
    argument should have led the trial court to allow a post-July 10 right to "excess
    water" and joins John Cox in challenging this ruling.
    In addition, AID advances several arguments on behalf of individual parties
    who were denied claims.          In order to have a water right confirmed in this
    -22-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    adjudication, the trial court required every Northside claimant to show that (1) the
    water was beneficially applied to the land, (2) a predecessor on the land signed the
    Code Agreement, (3) the property also received an Achepohl Certificate, and (4)
    the property in question was included in an answer filed in the federal Ahtanum
    litigation. CP at 934.
    With regard to the property owned by Hull Ranches, AID claims that a
    mistake was made by the Ahtanum II court when it found that the owner of the
    property did not sign the Code Agreement, and the trial court below should not
    have relied on that finding. With regard to the parcels owned by the Chancery and
    the Richardsons, Splawns, and Lyndes, AID asks this court to remand those
    determinations back to the trial court, which AID contends made a clerical error in
    failing to include these parcels and owners in its confirmation of rights.
    Finally, AID responds on behalf of the Hagemeiers to DOE's challenge
    regarding application of the statutorily prescribed excuse for nonuse of a water
    right.
    6. La Salle High School, Donald and Sylvia Brule, Jerome Durnil, and Albert
    Lantrip
    As noted, in order to have a water right confirmed in this adjudication, the
    trial court required that the property in question have been included in an answer
    filed in the federal Ahtanum litigation. CP at 934. The trial court concluded that
    neither the Brules nor La Salle made a showing of the fourth prong: that their
    properties were included in an answer filed in the federal Ahtanum litigation, the
    -23-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    suit for which was filed in 1947. CP at 933, 495-96. The Brules argue that their
    predecessor in interest in 194 7, Walter Cope, was never served in the federal
    litigation or, if he was, none of his successors were ever substituted into the
    litigation after the land was transferred. Thus, the Brules contend that Ahtanum I
    and II can have no preclusive effect because there is no identity of parties. As to
    La Salle, it is not contested that the owner of the land in 1947, Jeannie Goodman,
    was served with the Ahtanum suit. But she died a year later. Corrected Br. of
    Appellants La Salle High School, Donald and Sylvia Brule, Jerome Durnil, and
    Albert Lantrip (Br. of La Salle) at 16. La Salle now claims that Goodman's
    successors were required to be substituted into the litigation under Federal Rule of
    Civil Procedure (FRCP) 25(a)(1). Thus, La Salle argues that the record does not
    establish its predecessors were "properly served with paperwork that would have
    put them on notice that they were parties to the Federal Ahtanum Litigation" and
    that case can have no preclusive effect. Br. of La Salle at 20-21.
    In addition, these appellants join John Cox in arguing that the Ahtanum cases
    were not a general adjudication of water rights to the creek. Id. at 21. Thus,
    argues La Salle, the trial court erred when it required Northside users to prove their
    property was included in an answer filed in Ahtanum II. Br. of La Salle at 22. In
    the alternative, these appellants also join John Cox and AID in arguing that the trial
    court erred when it denied "junior rights" to "excess water." They ask that if this
    court affirms the trial court's denial of a "senior" (i.e., primary) water right, the
    -24-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    court reverse the trial court's determination that excess water cannot be used by
    non-Ahtanum parties.
    SUMMARY OF ISSUES AND SHORT ANSWERS
    As noted supra note 1, some of the issues brought to us by the parties were
    uncontested at the close of briefing, and as to those issues, we remand to the trial
    court for proceedings consistent with the parties' concessions. The live issues in
    this appeal that remain are as follows.
    1. Was the federal litigation an adjudication of Northside users' rights? [Short
    Answer: Yes.]
    2. Did the federal Ahtanum litigation quantify the reservation's irrigable
    acreage? [Short Answer: No. Remand for a determination of acreage.]
    3. Storage right
    a. Did the trial court correctly characterize the reservation's claim for a
    storage right from April to October as premature? [Short Answer:
    No. Remand for further fact-finding as to the necessity of storage.]
    b. Did the trial court properly deny the reservation a storage right from
    October to April?       [Short Answer:   No.   Reverse and remand to
    determine limit of right.]
    4. Excess water
    a. Did the trial court properly conclude that, as a matter of law, excess
    water is available for qualifying Northside users?      [Short Answer:
    Yes.]
    -25-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    b. Did the trial court properly deny qualifying Northside users a right to
    use excess water after July 10? [Short Answer: Yes.]
    c. Did the trial court properly limit John Cox's interest in excess water to
    a 45-day period ofuse ending May 15? [Short Answer: Yes.]
    d. Did the trial court properly deny a "junior right" to "excess water" for
    lands not recognized in the Pope Decree? [Short Answer: Yes.]
    5. Individual denials based on failure to satisfy the trial court's four-part test
    a. The Brules: Did the trial court properly determine that the Brules'
    predecessor in interest, W.C. Cope, was served in the federal Ahtanum
    litigation? [Short Answer: Yes.]
    b. La Salle High School: Did the trial court properly determine that La
    Salle's predecessors in interest were served in the federal Ahtanum
    litigation? [Short Answer: Yes.]
    c. Hull Ranches: Did the trial court properly deny Hull Ranches a water
    right on the basis that the Ahtanum II court found the Hull Ranches'
    predecessor in interest did not sign the Code Agreement?            [Short
    Answer: Yes.]
    6. Did the trial court properly apply the future development excuse in RCW
    90.14.140(2)(c) to the Hagemeiers? [Short Answer: No.]
    7. May this court direct the trial court to correct a clerical error?         [Short
    Answer: Yes. Remand as to the Chancery parcel to correct any error; affirm
    as to the Splawn, Richardson, and Lynde parcels.]
    -26-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    ANALYSIS
    There are several discrete and unrelated issues presented in this appeal. But
    m general, they fall into the following categories: claims dealing with
    quantification of the reservation's acreage, claims dealing with the reservation's
    right to store water, claims concerning the availability or existence of excess water,
    and claims of error on the part of the trial court that are specific to individual
    claimants.
    Although these issues are for the most part unrelated in fact, all require us to
    decide what the federal Ahtanum litigation accomplished. Disagreement between
    the appellants and the Northside parties as to the correct reading of Ahtanum
    informs most of their positions. The main area of disagreement is whether the
    federal Ahtanum cases constituted merely an allocation of water rights as between
    the reservation and the Northside users or an adjudication of Northside users'
    water rights. The trial court repeatedly held that it was an adjudication. See, e.g.,
    CP at 750 (Suppl. Report of the Court (Suppl. Report) at 26). The Northside users
    argue it was merely an allotment or an in gross apportionment.            Because the
    answer to this question guides several of our holdings, this opinion will turn to that
    question first.
    1. The federal Ahtanum litigation was an adjudication of Northside users'
    rights
    As explained, in order to have a water right confirmed in this adjudication,
    the trial court required every Northside claimant to show that (1) the water was
    -27-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    beneficially applied to the land, (2) a predecessor on the land signed the Code
    Agreement, (3) the property also received an Achepohl Certificate, and (4) the
    property in question was included in an answer filed in the federal Ahtanum
    litigation. CP at 934 (Mem. Op. La Salle High School (Mem. Op. re La Salle) at
    3). The trial court ruled that various parties failed to show one or more of these
    prerequisites, and those parties were thus denied water rights.
    These parties now argue that the trial court erred as a matter of law in
    holding that the federal Ahtanum litigation had preclusive effect on Northside
    users' rights. See Br. of John Cox at 9; Br. of La Salle at 21. The parties assert
    that Ahtanum was not a general adjudication of Northside users' water rights, but
    merely an allocation of water as between the reservation and the Northside users.
    See Br. of La Salle at 21-26.
    The federal Ahtanum litigation did adjudicate the Northside users' water
    rights. The Northside users are correct that when Ahtanum was initially filed, the
    United States did not seek a general adjudication but instead sought to invalidate
    the Code Agreement. But the Ninth Circuit Court of Appeals admonished the
    federal district court for dismissing the United States' complaint on the basis that
    the United States had failed to prove it had any right, as a trustee, to the waters of
    Ahtanum Creek. Ahtanum I, 236 F.2d at 339. The Ahtanum I court explained that
    the trial court missed the point. " [A] determination of the validity of the 1908
    agreement did not call for the trial court's conclusion that the United States had no
    interest whatever in the Ahtanum waters."          Id.   Instead, the Ahtanum I court
    -28-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    explained that, "as in the case of other suits to quiet title, the defendants should
    have been required to appear by answer and set forth their claims of right to the use
    of the waters of the stream." !d. It went on to direct that:
    Since the cause must be remanded for further proceedings in the trial court,
    and since those proceedings must determine and adjudicate the respective
    rights of the parties, during which defendants must be required to show and
    disclose their rights and titles, it is apparent that proper and appropriate
    answers must be required from all defendants.
    !d. (emphasis added). Despite this direction, on remand the federal district court
    again failed to adjudicate individual claims. The Ahtanum II court excused this
    exercise of discretion, but it did not adopt it. 330 F.2d at 910-12. Instead, the
    Ninth Circuit Court of Appeals explained that the record created at trial allowed it
    to fully adjudicate the relative rights of the parties, and it did so.
    The conclusions which we have reached here are such that a new
    trial of the case is unnecessary. A retrial would be most unfortunate. The
    parties should be informed now as to where they stand, and the unanimity
    of the evidence, to which we have previously alluded, makes our
    conclusion as to the extent of the 1908 water rights possible on this record.
    !d. at 914. The Ahtanum II court then made parcel-by-parcel adjustments to the
    irrigated acreage figures presented to the federal district court, as reflected in
    appendix A and appendix B ofthe court's opinion. !d. at 916, 917.
    Further evidence that the federal Ahtanum litigation ultimately adjudicated
    individual rights lies in the Northside parties' petition for writ of certiorari
    following the Ahtanum I decision and the Ahtanum II court's characterization of it:
    It would appear that [... ] the defendants were not in doubt that this
    court had previously ruled that they must prove their rights as of 1908 and
    establish their needs to the water as of that time. Thus, in their petition for
    certiorari following our former decision, defendants stated: "We thus find
    -29-
    Dep 't of Ecology v. Acquavella, et a!., 86211-7
    the court upholding the agreement on the one hand and then requiring the
    water users on the north side to completely readjudicate their rights by
    requiring them to establish their needs as measured fifty years ago. * * *
    The Court of Appeals' decision states: 'Furthermore, as in the case of other
    suits to quiet title, the defendants should have been required to appear by
    answer and set forth their claims or right to the use of the waters of the
    stream.' The effect is to require the Ahtanum water users to adjudicate
    again their right to the use of waters from the stream. They are not only
    required to establish their needs as of 1908, which was one of the purposes
    of the 1908 agreement, but are again required to prove their water rights
    with the same particularity which was required of them in the state court
    proceeding in 192 5."
    Plainly with this correct understanding of the meaning of our
    mandate the defendants at the trial on the remand proceeded to prove,
    elaborately and with particularity, what their water rights, or the water
    rights of their predecessors, were in 1908.
    Ahtanum II, 330 F.2d at 905.
    We reject the Northside users' contention that the federal Ahtanum litigation
    was merely an in gross allocation and not a water rights adjudication. On this
    point, we affirm the trial court. Because we hold that the Ahtanum litigation was
    an adjudication of rights, the trial court here properly required parties to show they
    filed an answer in Ahtanum in order to have a right confirmed in this proceeding.
    Keeping this overarching holding in mind, we turn now to the remaining
    arguments presented.
    2. The Ahtanum litigation did not preclusively quantify the reservation's
    irrigable acreage
    Although during the course of this proceeding the trial court issued a number
    of decisions quantifying the Nation's irrigable acreage, it did not make a definitive
    decision on this question until its 2009 memorandum opinion re Subbasin Number
    23 exceptions (CP at 456-531 ). As described earlier, the trial court concluded that
    the federal Ahtanum litigation had preclusively quantified the amount of irrigable
    -30-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    acreage on the reservation. CP at 515. Based on quantifications made in a 1957
    pretrial order on the merits in the Ahtanum cases, the trial court determined that the
    amount of practicably irrigable acreage is 4,107.61 acres. CP 514-15 (subtracting
    992.39       acres of reservation land confirmed a separate right from the
    "approximately" 5,100 acres claimed by the United States in the Ahtanum cases).
    The Nation and the United States argue that the federal Ahtanum litigation
    did not quantify the reservation's acreage at all.          Given that they believe
    quantification is still an undetermined question, the United States and the Nation
    argue that the correct figure is 6,381.3 acres. Br. of United States at 21; Yakama
    Nation Br. at 13-18. 9
    Whether the trial court erred in giving Ahtanum preclusive effect on the
    question of the reservation's quantum of acreage is a question of law, and as such
    the standard of review is de novo. Sunnyside Valley Irrigation Dist. v. Dickie, 
    149 Wash. 2d 873
    , 880, 
    73 P.3d 369
     (2003).
    As an initial matter, the trial court, in finding that Ahtanum preclusively
    determined the reservation's irrigable acreage, relied on agreed facts in a 19 57
    pretrial order in Ahtanum. "There is a second Order [the 1957 Order] that the
    Court believes establishes the law of the case regarding acreage." CP at 514. The
    trial court did not ultimately rely on an earlier 1951 pretrial order that also
    9
    The United States and the Nation offered alternative arguments on the question
    of quantifying acreage in the event we concluded the federal Ahtanum litigation had some
    preclusive effect on the question. Because we hold that it does not, we do not consider
    the alternative arguments.
    -31-
    Dep 't ofEcology v. Acquavella, et al., 86211-7
    contained references to a number of different acreage quantifications. See CP at
    513-14 (discussing but not relying upon 19 51 pretrial order). It is important to
    point this out because some of the parties spend a fair amount of time discussing
    the 1951 pretrial order.      See, e.g., Yakama Nation Br. at 26; Resp. Br. of
    Appellant/Resp't John Cox Ditch Co. to Brs. of the United States, Yakama Nation
    and Washington State Department of Ecology (Resp. Br. of John Cox) at 15-16;
    Resp. Br. of Appellant/Cross Resp't Ahtanum Irrigation Dist. to the United States
    and Yakama Nation, Br. of Appellant (Resp. Br. of AID) at 9-10. The trial court
    did appear to rely upon the 1951 pretrial order in early rulings. See CP at 923.
    And it also cited to the 1951 pretrial order to establish the quantity of non-Indian
    fee lands. CP at 515. But in the final analysis, as noted, the 1951 pretrial order
    was not part of the trial court's mathematical calculation as to the reservation's
    irrigable acreage. Id.
    In finding that the 1957 pretrial order controlled, the trial court looked to
    agreed fact XV, which stipulated that irrigable lands claimed by the reservation
    totaled "approximately 5,100 acres." CP at 514. The trial court found the 5,100
    figure to be reasonable based on other contentions put forth by the United States in
    the 1957 pretrial order. CP 515. It then subtracted from 5,100 the 992.39 acres of
    non-Indian reservation fee land to arrive at an irrigation right for the Nation of
    4,107.61 acres.
    The United States correctly identifies the error in the trial court's reasoning.
    Br. of United States at 25. The 1957 pretrial order did not contain a stipulation
    -32-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    from the parties that the irrigable land on the reservation in fact totaled 5,100.
    Instead, the agreed fact was merely that the United States claimed approximately
    5,100 acres of irrigable land. CP at 514. It is not at all clear how an approximated
    figure could serve as the basis by which to quantify the reservation's irrigation
    right.    Moreover, this agreed fact came under the heading "Lands For Which
    Rights To The Use of Water from Ahtanum Creek Are Claimed." CP at 3684
    (1957 pretrial order at 6). Thus, the 5,100 acre calculation is not a figure the
    federal district court in Ahtanum arrived at as a finding of fact.
    Neither does the 1951 pretrial order alone provide a sufficient basis to
    support the trial court's determination that Ahtanum preclusively quantified the
    reservation's irrigable land. As the trial court itself noted, the 1951 pretrial order
    contained two equally reasonable quantifications of the irrigation right. CP at 923.
    More importantly, the 1951 pretrial order was part of a proceeding brought by the
    United States to invalidate the Code Agreement. The district court held that the
    United States had not proved that it "had any right, title or interest in any water of
    Ahtanum Creek" and dismissed the action and the complaint. Ahtanum I, 236 F.2d
    at 323-24. It would be a dubious conclusion to say that the United States' evidence
    of irrigable acreage incorporated into the 1951 pretrial order made a preclusive
    quantification of the reservation's irrigable acreage when the proceeding under
    which the order was entered ultimately found the United States had no interest
    whatsoever in the water.
    -33-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    AID and John Cox rely on and quote extensively from the 1957 pretrial
    order, and the trial court's discussion of the order, in arguing that Ahtanum is
    preclusive. Resp. Br. of AID at 7-19; see generally Resp. Br. of John Cox. But
    they offer no response to the persuasive contention that an approximate claim, as
    the 5,100 acre figure was, is not a finding of fact.
    The best argument AID and John Cox have that the federal Ahtanum
    litigation determined the reservation's irrigable acreage can be found in language
    from Ahtanum I. Describing the proceeding below, the Ninth Circuit wrote:
    By maps and Indian Office records the United States showed the location,
    point of diversion and capacity of each ditch constructed by Indians, or by
    the Indian Service, and the description, irrigable area, and location of all
    reservation lands served by those ditches with water from Ahtanum Creek.
    Also shown are the rate of progress through the years since the creation of
    the treaty in getting this water upon these lands. Just which lands are Indian
    owned, whether under trust or fee patent, and which are owned by
    successors of Indian allottees, also was proven. The quantities of water
    required by these lands was both stipulated and proven.
    236 F.3d at 340 (emphasis added); Resp. Br. of John Cox at 14-15 (quoting Judge
    Stauffacher's citation to this language in his 1994 PIA memo). But to the extent
    this language hints that the United States may have proved an acreage
    quantification, it merely notes that the United States adequately proved what
    acreage it presently irrigated as of 194 7, when the federal Ahtanum litigation
    commenced.       This is not adequate to meet the practicably irrigable acreage
    standard, which must account for both present and future needs of the reservation.
    Arizona I, 373 U.S. at 600. Thus, it would be erroneous to hold that this language
    -34-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    intimates that the PIA quantification of the reservation's irrigation right was
    proved in the federal Ahtanum proceedings.
    John Cox endorses the trial court's view that the federal Ahtanum litigation
    did make provision for the future needs of the reservation, and therefore
    preclusively determined the reservation's practicably irrigable acreage. Resp. Br.
    of John Cox at 11-13; CP at 1508-12. But the portions of Ahtanum I and II that the
    trial court and John Cox cite in support of this assertion discuss the ongoing
    shorifall the reservation would face as a result of the Code Agreement. The Pope
    Decree's allocation tried to minimize the negative impact of the Code Agreement
    while respecting the agreement's percentage allocation.
    The conclusions which we have reached here are such that a new
    trial of the case is unnecessary . . . . Thus the Indian Tribe may now
    ascertain, by actual experience under the decree, just how badly they have
    suffered through the Code taking of their property. Plainly the waters they
    are here awarded ·will be insufficient for the irrigable lands of the
    Reservation. Just how insufficient they can soon tell.
    Ahtanum II, 330 F.2d at 914.
    In sum, there were several figures quantifying (or approximating) the
    reservation's practicably irrigable acreage available from the record created in
    Ahtanum. Nowhere in the Ahtanum federal district court proceedings was there a
    finding of fact as to the reservation's practicably irrigable acreage. Hence, it is
    evident that proceeding did not quantify the acreage. The trial court erred when it
    declined to consider the United States' evidence of practicably irrigable acreage.
    Because the trial court made no findings of fact as to the practicably irrigable
    -35-
    Dep 't ofEcology v. Acquavella, et al., 86211-7
    acreage evidence the United States and the Nation offered, we are not in a position
    to adopt those parties' contention that the correct figure is 6,381.3 acres. The
    acreage remains to be determined. We hold that because the federal Ahtanum
    proceeding did not quantify the reservation's practicably irrigable acreage, the trial
    court should have considered the evidence as to practicably irrigable acreage. We
    remand for a determination consistent with this holding.
    3. Storage right
    The Pope Decree granted qualifying parties the right to divert water from
    Ahtanum Creek. The parties now debate whether the Nation is precluded under
    the Pope Decree from also storing water, such as in a reservoir or other storage
    facility. The following two questions relate to that claimed right.
    a. The reservation's claim for a storage right from April to October is
    not premature
    Notably, the trial court did not outright deny a storage right to the
    reservation, but rather held that it was premature to grant one. CP at 521. The trial
    court noted that it would include a statement in its conditional final order (CPO)
    "allowing for some modification of the Yakama Nation's water right" to account
    for storage in the future. !d. at 522. However, it failed to include the statement in
    the CPO.
    The trial court offered little reasonmg supporting its conclusion that
    confirmation of a storage right for the reservation would be premature as to a
    storage right between April 1 and October 1. It noted only that it was a "request
    -36-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    for a potential future storage right." CP at 521. The United States argues that it is
    not asking for a future storage right but instead asking to store water "it already has
    a right to divert for use on acres it already has a right to irrigate." Br. of United
    States at 41-42. John Cox argues that the United States failed to provide evidence
    that construction of a storage facility was economically feasible or that there was a
    suitable site on the reservation for such storage. Resp. Br. of John Cox at 28. The
    United States and DOE respond that economic feasibility is an appropriate
    question in making a determination of practicably irrigable acreage.
    Because we have already concluded this case must be remanded to the trial
    court for a determination of the reservation's irrigable acreage under the
    practicably irrigable acreage standard, we have effectively mooted the question of
    whether a determination of the storage right is premature. We remand for fact
    finding from the trial court on the question of the reservation's storage needs as
    part of its practicably irrigable acreage determination and appropriate conclusions
    of law.
    b. The trial court erred when it denied the reservation a storage right
    from October to April
    The Nation seeks a right to divert and store water from October to April.
    The trial court denied this claim because it held that Ahtanum I and II precluded
    such an award. Those cases, wrote the trial court, "authorize diversion of water
    between April 1 and October 1" and "do not provide for water to be diverted
    during the nonirrigation season." CP at 521.
    -37-
    Dep 't ofEcology v. Acquavella, et al., 86211-7
    By its plain language, the Pope Decree does not foreclose a storage right. It
    decrees that after July 10 of each year, "all the waters of Ahtanum Creek shall be
    available to, and subject to diversion by, the plaintiff for use on Indian Reservation
    lands south of Ahtanum Creek, to the extent that the said water can be put to a
    beneficial use." Ahtanum II, 330 F.2d at 915. We hold that the trial court erred in
    denying the reservation a right to store water outside the irrigation season. The
    extent of this storage right should be considered on remand as part of the trial
    court's practicably irrigable acreage determination.
    4. Excess water
    The trial court ruled that some Northside users could make use of "excess"
    water in Ahtanum Creek-that is, water "in excess of that needed to satisfy all
    confirmed water rights both on and off the reservation and any water needed to
    satisfy the Yakama Nation's minimum instream flow right for fish." CP at 753-54.
    But the trial court ordered that only lands that were recognized in the Pope Decree
    had a right to excess water, and it imposed additional limits. Id. at 753. These
    rulings are challenged by the parties. Yakama Nation Br. at 43; Br. of John Cox at
    21; Br. of AID at 18; Br. of La Salle at 26-27. The following four questions relate
    to the parties' challenges.
    a. The trial court properly concluded that as a matter of law, excess
    water is available for qualifying Northside parties
    The Nation contends that as a matter of law, Northside parties should have
    no right to excess water. Yakama Nation Br. at 47. To be more precise, the Nation
    -38-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    argues that there is no excess water as a matter of law because the Nation's treaty-
    reserved rights mean that all water not specifically granted to the Northside parties
    reverts back to the reservation. Id. at 46-47. Moreover, there is insufficient water
    in the creek to satisfy even the needs of the reservation, so there is no basis to
    confirm an excess right for Northside parties. Id. at 47.
    The Pope Decree altered the traditional scheme of treaty-reserved rights in
    that it granted excess water to the reservation to the extent it can be put to
    beneficial use. See Ahtanum II, 330 F.2d at 915; see Resp. Br. of United States
    at 4. As a matter of law, due to its treaty-based reserved rights, the Nation has no
    obligation to ensure there is excess water after the allotments under the Pope
    Decree are satisfied. But just because there may be no water available does not
    mean a right to excess water cannot be confirmed to qualifying Northside users. 10
    See United States v. Anderson, 
    736 F.2d 1358
    , 1365 (9th Cir. 1984) (noting in the
    context of a question about the state's jurisdiction to regulate excess water
    impacting a treaty reservation that "[a]ny permits issued by the state would be
    limited to excess water. If those permits represent rights that may be empty, so be
    it."); CP at 754 (explaining that "it is an irony of stream adjudications that
    insufficient supply does not prevent a court from confirming rights, unless it can be
    demonstrated that such a limitation on supply has prevented beneficial use"); see
    10
    A qualifying Northside party is one who meets the trial court's four· part test: (1)
    the water was beneficially applied to the land, (2) a predecessor on the land signed the
    Code Agreement, (3) the property also received an Achepohl Certificate, and (4) the
    property in question was included in an answer filed in the federal Ahtanum litigation.
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    also Br. of AID at 28; Resp't/Cross-Appellant State of Wash., Dep't of Ecology's
    Opening/Resp. Br. (Br. of DOE) at 36. For this reason, the Nation's argument that
    rights should be denied because there will be some years when no excess water
    exists is not compelling.      The qualifying Northside parties may hold the right
    regardless of whether it will be fulfilled.
    We affirm, as a general proposition, the trial court's ruling granting
    qualifying Northside parties a right to use excess water. We adhere to the trial
    court's and the parties' conception of excess water: water in excess of that needed
    to satisfy all rights confirmed both on and off the reservation under the Pope
    Decree as it incorporated the Code Agreement and any water needed to satisfy the
    Nation's minimum instream flow right for fish. Moreover, we also adhere to the
    trial court's limitations on the use of excess water, as will be explained further
    below.
    b. The trial court properly denied qualifying Northside users a right to
    use excess water after July 10
    The trial court denied qualifying Northside users the right to use excess
    water after July 10. CP at 955 (2003 Mem. re Legal Issues at 14-16). It noted that
    in outlining the parties' respective rights during the irrigation season from April to
    July, section I of the Pope Decree gave Northside parties no right to excess water
    "'except in subordination to the higher rights of the plaintiff.'" CP at 9 56 (quoting
    section I, paragraph a. of the Pope Decree). But the trial court further observed
    that section II of the Pope Decree, discussing rights after July 10, simply said that
    -40-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    all the waters of Ahtanum Creek shall are available to the Nation, to the extent that
    the water can be put to a beneficial use. See CP at 957 (discussing section II of the
    Pope Decree). The trial court noted that in contrast to section I, section II said
    nothing about the defendant's subordinate rights to excess water at all.          The
    significance of this, the trial court concluded, was that the Pope Decree did not
    intend to award Northside parties any right to use excess water after July 10. We
    agree.
    Lending support to the trial court's interpretation is the Ahtanum II court's
    observation that evidence showed there was historically no water available after
    the first of July each year. The Ninth Circuit said it was thus "compelled to hold
    that the water rights of the individual parties to the 1908 agreement ... terminated
    in the early part of July in each year, a conclusion which must be reflected in the
    final judgment in this case." Ahtanum II, 330 F.2d at 910.
    The Northside parties argue that section II of the Pope Decree, while it did
    not mention Northside users' rights to excess water, limited the reservation water
    right to beneficial use. Thus, they contend, any water after July 10 that is not
    beneficially used by the reservation is "excess water" that should be available for
    use by Northside parties. See, e.g., Br. of John Cox at 25. While the Not1hside
    parties' argument is not untenable, they offer no grounds for reading Ahtanum II's
    statement that individual parties' rights terminate in the early part of July as
    anything other than unequivocally limiting Northside users' interest in excess
    -41-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    water beyond July 10. 11 We hold that the trial court properly denied Northside
    users an interest in excess water after July 10.
    c. The trial court properly limited John Cox's interest in excess water to
    a 45-day period of use ending May 15
    When excess water is available, the trial court awarded lands recognized in
    the Pope Decree additional water up to the 0.02 cfs per acre as authorized in the
    "appurtenant certificates." 12 CP at 458 (2009 Mem. Op. to the 2008 Suppl. Report
    of the Court at 3). In a later ruling, the court explained that
    [t]he Court determined that excess water would be available during the
    early spring. Memorandum Opinion, p. 3, lines 14 through p. 4, line 10.
    Although not specifically set forth, as can be seen by the confirmed water
    rights, the Court relied upon a 30 day availability for water users north of
    Ahtanum Creek. For Johncox [sic], the Court relied upon 45 days, as
    Johncox's [sic] season begins on April1, not Apri115.
    CP at 77 (2009 Order on Mots. for Recon. to the Mem. Op. and Conditional Final
    Order at 4). Thus, the Northside users' right to use excess water is limited to a 30-
    or 45-day period terminating in May.
    John Cox is the only party who appears to appeal this particular limitation on
    excess water use. Br. of John Cox at 26-28; Reply Br. of Appellant/Cross-Resp't
    11
    It is true that in Washington, "judicial and legislative developments have firmly
    established the preference for beneficial usage" of water rights. In re Rights to Waters of
    Stranger Creek, 
    77 Wash. 2d 649
    , 656, 
    466 P.2d 508
     (1970). But if the Nation does not put
    water after July 10 to beneficial use, we presume it will flow down to users in a lower
    subbasin. See Wash. Supreme Court oral argument, Wash. Dep 't of Ecology v.
    Acquavella, No. 83788-1 (Sept. 18, 2012), at 17 min., 11 sec. through 17 min., 50 sec.,
    video recording by TVW, Washington State's Public Affairs Network, available at
    http://www.tvw.org (counsel explaining that water moves in stream from one reclamation
    project to another). The effect of Ahtanum II on this question does not disturb our
    jurisdiction's preference for beneficial use.
    12
    "Appurtenant certificates" appears to mean the Achepohl Certificates in the
    context of the trial court's discussion. CP at 458.
    -42-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    John Cox Ditch Co. to Resp. Brs. of the United States and Yakama Nation (Reply
    Br. of John Cox) at 23. John Cox does not appear to question as a matter of law
    the trial court's ability to place limits on John Cox's use of excess water. Instead,
    John Cox argues that the trial court's decision is not based on substantial evidence.
    Reply Br. of John Cox at 23-24. The United States explains how the trial court
    might have arrived at its 45-day limit on excess water use. Resp. Br. of United
    States at 30-32. It suggests the trial court might have relied on a declaration
    supplying evidence of flow data for 1998-2008, which could have led the trial
    court to conclude 45 days ending May 15 accounted for the period of time in which
    there was usually excess water. !d. (citing CP at 5-10). John Cox cites to its own
    exhibits, which it claims "show late May and early June are frequently the periods
    of highest flow in the Ahtanum subbasin." Reply Br. of John Cox at 24 (citing Ex.
    JCD (John Cox Ditch) 16 through Ex. JCD 30).              However, the trial court
    recognized that "[t]he period of time each year that excess water might be available
    varies significantly." CP at 498.
    "[W]here competing documentary evidence must be weighed and issues of
    credibility resolved, the substantial evidence standard is appropriate." Dolan v.
    King County, 
    172 Wash. 2d 299
    , 310, 
    258 P.3d 20
     (2011). We are not in a better
    position than the water adjudicator to evaluate complex scientific evidence
    regarding water availability in the Ahtanum Creek Subbasin. Thus, although there
    may be conflicting evidence, there is evidence of sufficient quantum to persuade a
    fair-minded person that the 45-day limitation ending on May 15 was reasonable.
    -43-
    Dep't of Ecology v. Acquavella, et al., 86211-7
    John Cox is correct that the availability of water does not necessarily dictate
    a right, as we have already noted. But a limitation on the right still recognizes that
    the right exists. We decline to disturb the trial court's limitation on John Cox's
    excess water right to a 45-day period of use ending on May 15.
    d. The trial court properly denied a "junior right" to excess water for
    lands not recognized in the Pope Decree
    Initially in this proceeding, the trial court granted a "junior right" in excess
    water. Under the trial court's initial ruling, a "junior" rights holder is one who
    either (a) was not confirmed a right in the Pope Decree, but who had been making
    beneficial use of excess water pursuant to an Achepohl Certificate or (b) a party
    who had rights under the Pope Decree, but whose use of excess water meant the
    party was using more water than allocated to it under the Pope Decree. CP at
    1082-88 (2002 Report ofthe Court at 105-11). In the trial court's view, this award
    harmonized the decision in Achepohl with the Pope Decree. CP at 1087.
    After further reflection, the trial court changed its mind. It concluded that
    the Pope Decree precluded the use of excess water except on lands recognized in
    the Pope Decree. CP at 753 (2008 Suppl. Report of the Court at 29). The trial
    court found, however, that excess water could be used to fulfill the Northside
    users' Achepohl Certificate rights on lands confirmed under Ahtanum.
    The Pope Decree awarded 0.01 cfs for each irrigated acre, half of the
    quantity of water authorized for use in the certificates that issued following
    the earlier adjudication, the Achepohl Decree. The Court finds that excess
    water can be used, when available, on lands north of Ahtanum Creek that
    are confirmed rights in this proceeding, up to the 0.02 cfs per acre
    authorized in the appurtenant certificates.
    -44-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    CP at 458 (2009 Mem. Op. to the 2008 Suppl. Report of the Court at 3).
    The Northside parties challenge the trial court's decision that excess water
    can be used only on lands recognized in the Pope Decree. They urge this court to
    embrace a more expansive view of "junior party." See Br. of John Cox at 24
    (asking that this court recognize John Cox can use excess water, when available, to
    irrigate the additional lands confirmed to it under Achepohl but not recognized by
    the Pope Decree); Br. of AID at 24-27 (arguing that the federal Ahtanum litigation
    leaves room for the allocation of excess water to parties holding only an Achepohl
    Certificate). They ask that these "junior rights" apply to water that is in excess of
    what is already defined as excess water-that is, water that may remain after rights
    under the Pope Decree are fulfilled, and subordinate to qualifying Northside
    parties' rights in excess water. In other words, water that is in excess of excess
    water.
    The United States characterizes the Northside parties as argumg that
    "defendants" as contemplated in the federal Ahtanum litigation meant all
    defendants joined in the litigation, not just those confirmed a right. Resp. Br. of
    United States at 24.       That argument, responds the United States, "is plainly
    inconsistent with the Ninth Circuit's express holding that the [Achepohl] Decree
    disposes of water right claims for the tracts of the 456 defendants not included in
    Appendix B." Id. In addition, much of the Northside parties' argument on this
    question relate to their assertion that the federal Ahtanum litigation was not an
    adjudication of their water rights, a contention we reject. Supra pp. 28-31.
    -45-
    Dep 't ofEcology v. Acquavella, et al., 86211-7
    Because the federal Ahtanum litigation was an adjudication, that leaves at
    the heart of the excess water question a perceived tension between the Code
    Agreement, the Ahtanum cases, and Achepohl. It is troubling at first blush that
    Ahtanum makes no direct mention of Achepohl or the fact that many of the
    Northside litigants in Ahtanum were exercising rights under Achepohl.                     But
    because Ahtanum Creek would have been entirely controlled by the Nation's
    treaty-reserved rights but for the Code Agreement, Ahtanum I, 236 F.2d at 340, an
    Achepohl Certificate is meaningless if the party was not also a party to the 1908
    Code Agreement. See CP at 966 (trial court's 2003 Mem. Op. re: Ahtanum Creek
    Threshold Legal Issues) (reasoning that "even if an Acquavella claimant can prove
    they were not properly joined to the U.S. v. Ahtanum proceeding, they must also
    prove, as every single water user was require to do in that proceeding, that they are
    successors to a signatory of the 1908 Code Agreement"). The Ahtanum II court
    determined that to have been a party to the 1908 Code Agreement, one had to have
    been making beneficial use of the water in 1908. If a party in the federal Ahtanum
    litigation could not or did not show this, or did not join the Ahtanum litigation at
    all, then they were denied a right under Ahtanum II. Such a denial-in effect a
    recognition that the party was not a signatory to the Code Agreement-worked to
    void the party's Achepohl Certificate. Thus, we hold that the trial court properly
    denied "junior rights" to use "excess water" on lands not recognized by the Pope
    Decree. 13
    13
    At various points, John Cox asks that this court confirm a right for it to irrigate
    -46-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    To summarize on the issue of rights in excess water, as a general proposition
    we agree with the trial court that Northside users are not precluded as a matter of
    law from taking an interest in excess water in those years it is available (and to
    reiterate, in no way is the Nation required to ensure excess water is available). But
    we agree with the trial court's limits on those rights, namely that they cannot be
    exercised after July 10, that they may be limited to a 45-day period ending on May
    15, and that rights in excess water cannot be exercised by parties that were not
    confirmed a right in the first instance under the Pope Decree.
    5. The trial court erred when it applied the future use excuse m RCW
    90.14.140(2)(c) to the Hagemeiers
    The trial court confirmed a water right to the Hagemeiers. CP at 798. DOE
    argued that this right should have been denied because the Hagemeiers
    relinquished the right through a continuous period of nonuse. CP at 4 79. The trial
    court disagreed, finding that the Hagemeiers showed an excuse for nonuse under
    RCW 90.14.140(2)( c). !d. DOE cross-appeals on this issue. As a preliminary
    matter, we recognize AID's authority to pursue this issue on behalf of the
    Hagemeiers.
    The Hagemeiers bought irrigated land in approximately 1986 intending to
    live on it and use it as pasture. CP at 2842. Career obligations kept them from
    carrying out their plans for nearly nine years. !d. at 2843. During that time, no use
    was made of the land. !d. After five successive years of nonuse, Washington's
    lands confirmed to it under Achepohl, but not under the Pope Decree. See, e.g., Br. of
    John Cox at 24. Consistent with our discussion here, we decline John Cox's invitations.
    -47-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    water code considers a water right relinquished. RCW 90.14.160, .170, .180. But
    the water code provides some excuses for nonuse that can avoid relinquishment.
    RCW 90.14.140.        Once the five-year period of nonuse is proved, the party
    asserting the right bears the burden of showing an applicable excuse under the
    statute.
    Here, the claimed excuse under the statute is the "determined future
    development" exception. Under the statute, "there shall be no relinquishment of
    any water right ... [i]f such right is claimed for a determined future development
    to take place either within fifteen years of July 1, 1967, or the most recent
    beneficial use of the water right, whichever date is later." RCW 90.14.140(2)(c).
    The interpretation of a statute is a question of law we review de novo. City
    of Seattle v. Burlington N R.R., 
    145 Wash. 2d 661
    , 665, 
    41 P.3d 1169
     (2002). In
    construing the statute at issue, this court has said that a "determined future
    development" means there is a firm definitive plan in place prior to the end of the
    five-year grace period, which must be completed within fifteen years. R.D. Merrill
    Co. v. Pollution Control Hearings Bd., 
    137 Wash. 2d 118
    , 142-43, 
    969 P.2d 458
    ( 1999). To read the statute as allowing a plan to be determined at any point during
    the 15-year period would read the five-year grace period out of the statute and
    nullify the automatic presumption of relinquishment that attaches after five years
    of nonuse. Id.      In addition, in R.D. Merrill we cautioned that the excuses for
    nonuse must be construed narrowly in order to respect our water code's preference
    that water be beneficially used. Id. at 140.
    -48-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    Before the trial court, DOE argued that resuming irrigation of land after a
    lengthy period of nonuse is not "development."            The trial court disagreed,
    reasoning that "[l]and that has not been irrigated and has sat idle for ten years, as
    was the case with the Hagemeiers' property, would certainly need development
    prior to being suitable for irrigation." CP at 479-80.
    The trial court's conclusion reads the "determined future development"
    exception too broadly. Nothing in Clifford Hagemeier's testimony indicates that
    the Hagemeiers took any steps toward "development," even if development is
    considered as an intent to resume irrigation during the nine years the land sat idle.
    CP at 2840-44.       We hold that the trial court erred in applying the "future
    development exception" ofRCW 90.14.140(2)(c) for nonuse to the Hagemeiers.
    6. Individual denials based on failure to satisfy the trial court's four-part test
    To reiterate, in order to have a water right confirmed in this adjudication, the
    trial court required every Northside claimant to show that ( 1) the water was
    beneficially applied to the land, (2) a predecessor on the land signed the Code
    Agreement, (3) the property also received an Achepohl Certificate, and (4) the
    property in question was included in an answer filed in the federal Ahtanum
    litigation. CP at 934. The trial court ruled that various parties failed to show one
    or more of these prerequisites. These parties-The Brules, La Salle High School,
    and Hull Ranches-now challenge its rulings, seeking to excuse any failure to
    satisfy the trial court's four-part test.
    -49-
    Dep't of Ecology v. Acquavella, et al., 86211-7
    a. The trial court properly determined that the Brules predecessor in
    interest, W.C. Cope, was served in the federal Ahtanum litigation
    The trial court found that there was no showing the Brules predecessor in
    interest filed an answer to the federal Ahtanum litigation. See CP at 495-96. The
    Brules now argue that their predecessor was never served in the Ahtanum
    litigation, and thus they cannot be bound by the Pope Decree.
    The trial court made a finding of fact that the Brule's successor-in-interest
    did not file an answer in Ahtanum.          The trial court also concluded that the
    successor-in-interest was served with the Ahtanum summons and complaint. CP at
    495. The owners of the land at the time of the Ahtanum summons and complaint
    were W.C. Cope and his wife, Inez Cope. CP at 3625. But the summons and
    complaint was left with a person identified as W.C. Cope's wife, Rose Cope. YIN
    Ex. 427, at 2 (record of service of Ahtanum summons and complaint). The Brules
    argue that the discrepancy between the first names renders the record of service
    insufficient evidence to demonstrate that a Brule predecessor was served in the
    Ahtanum litigation.
    We review findings of fact under the substantial evidence test, which is
    evidence of sufficient quantum to persuade a fair-minded person of the truth of the
    declared premise. Ridgeview Props. v. Starbuck, 
    96 Wash. 2d 716
    , 719, 
    638 P.2d 1231
     (1982).      Here, despite the discrepancy in the name, there is sufficient
    evidence to persuade a fair-minded person that the correct W.C. Cope was served.
    No evidence is presented that there was another W.C. Cope using the waters of
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    Dep 't of Ecology v. Acquavella, et al., 86211-7
    Ahtanum Creek. It was reasonable for the trial court to conclude there was but
    one, and he was served with notice of the Ahtanum litigation.
    The Brules also argue that the trial court failed to address the apparent fact
    that subsequent transfers of the property took place during the federal Ahtanum
    litigation, and no substitution of the new owners was ever made. This, however, is
    a question that neither the trial court nor we have any jurisdiction over, as it
    concerns a claimed procedural error made by the Ahtanum court, which we are
    powerless to correct. We hold that substantial evidence supports the trial court's
    finding that the Brules' predecessor-in-interest was properly served in the Ahtanum
    litigation, and the Pope Decree is therefore binding on the Brules.
    b. The trial court properly determined that La Salle High School's
    predecessors in interest were served in the federal Ahtanum litigation
    At the time the federal Ahtanum litigation commenced, the La Salle property
    was owned by Jeannie Goodman.              CP at 934-35.   She was served with the
    Ahtanum summons and complaint but died shortly thereafter. Id. Her land was
    sold in part to Wade Langell and in part to H.A. Richmond. Id. The trial court
    found that Langell and Richmond were served with the Ahtanum summons and
    complaint and were subsequently denied rights in the Pope Decree. Id. at 935. It
    therefore denied rights to La Salle. Id.
    La Salle now argues that Langell and Richmond should have been
    substituted for Goodman in accordance with FRCP 25(a)(l), and that because they
    were not, we have no way of knowing if the summons and complaint they were
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    Dep 't of Ecology v. Acquavella, et al., 86211-7
    served pertained to what is now the La Salle land or some other parcel of land
    elsewhere along Ahtanum Creek. Br. of La Salle at 17-19.
    We are not persuaded by this argument. FRCP 25(a)(1) did not require
    substitution of Goodman for Langell and Richmond. As the United States points
    out, it is a permissive rule whose purpose is to allow dismissal of a deceased party,
    so that the closing of an estate is not delayed. Resp. Br. of United States at 37
    (citing Anderson v. Yungkau, 
    329 U.S. 482
    , 485, 
    67 S. Ct. 428
    , 
    91 L. Ed. 436
    (1947)). And, it was within the Ahtanum district court's discretion to join Langell
    and Richmond rather than substitute them for Goodman. See Sun-Maid Raisin
    Growers of Cal. v. Cal. Packing Corp., 
    273 F.2d 282
    , 284 (9th Cir. 1959)
    (explaining in the context of FRCP 25(a) that "[s]ubstitution or joinder is not
    mandatory where a transfer of interest has occurred"). As with the Brules, if there
    was a procedural error, we lack jurisdiction to correct it.   The trial court correctly
    concluded that La Salle's predecessors interest were properly served in Ahtanum
    and were subsequently denied a right in that proceeding. La Salle is precluded
    from claiming rights in this proceeding.           We hold that substantial evidence
    supports the trial court's finding that La Salle's predecessor in interest was
    properly served in the Ahtanum litigation, and the Pope Decree is therefore binding
    on La Salle.
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    Dep 't of Ecology v. Acquavella, eta!., 86211-7
    c. The trial court properly denied Hull Ranches a water right on the basis
    that the Ahtanum II court found the Hull Ranches' predecessor in
    interest did not sign the Code Agreement
    In considering the parcel that is now owned by Hull Ranches, the Ahtanum
    II court noted that "[i]t appears from the answer itself that the land was not owned
    by a 1908 signatory." Ahtanum II, 330 F.2d at 917 (App. A). Accordingly, the
    trial court here denied Hull Ranches a water right. CP at 123 5. AID now argues
    on behalf of Hull Ranches that the Ahtanum court was mistaken and that in fact the
    Code Agreement was signed by an agent of the owner of the parcel at the time. Br.
    of AID at 28-33.       While this may be the case, the trial court concluded the
    evidence AID puts forth concerning agency was also available to the Ahtanum II
    court, which resolved this issue. CP at 492. We cannot disturb the Ninth Circuit's
    judgment that the evidence was insufficient to show the predecessor on the Hull
    Ranches land was not a signatory to the Code Agreement. We therefore hold that
    the trial court did not err in denying water rights to Hull Ranches.
    7. Claimed clerical errors
    AID argues that the trial court committed certain clerical errors that resulted
    in otherwise eligible parcels not having water rights confirmed to them. AID asks
    this court to remand to the trial court for confirmation of rights to those parcels.
    We agree with AID's position as to one of the parcels it brings to our attention but
    reject its claim of clerical error as to the remaining parcels.
    -53-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    a. To the extent that the Chancery was erroneously deprived of a
    confirmed water right, the trial court is directed to correct the error
    AID argues that the trial court appears to have made a mistake in failing to
    confirm a water right to the Chancery in the 2009 CPO. The parcel at issue is one
    of three parcels belonging to the Chancery, the other two of which were confirmed
    a right. All three appear to have met the trial court's requirements to be confirmed
    a water right.    See CP at 830-32 (Suppl. Report at 106-08).       And there is no
    evidence the trial court found any reason not to confirm a right to all the parcels
    held by the Chancery. Thus, AID is likely correct that a clerical mistake occurred
    here.
    However, the United States argues that AID had several months to correct
    this apparent omission, as it first occurred in the trial court's 2008 supplemental
    report. Resp. Br. of United States at 39. Because AID did not timely act, the
    United States argues that RAP 2.5(a) should prevent review of this question.
    The rules of appellate procedure are flexible to allow for the fair
    administration of justice. This was an enormous adjudication, involving thousands
    of parties. In this instance, we are not inclined to irrevocably punish AID and the
    Chancery for its oversight, when the trial court made the same oversight. AID asks
    that we remand to the trial court to correct this error. Br. of AID at 34. Assuming
    an error did occur, as appears likely, we direct the trial court to correct it on
    remand.
    -54-
    Dep't of Ecology v. Acquavella, et al., 86211-7
    b. The Splawn, Richardson, and Lynde parcels were not denied a water
    right due to clerical error on the part of the trial court
    With regard to these parcels, AID failed to present the trial court with
    evidence concerning these parcels after the trial court specifically asked AID to do
    so. CP at 897-98; Resp. Br. of United States at 39. Accordingly, these parties
    were not confirmed a right. AID asks this court to correct this "clerical error," akin
    to its argument concerning the Chancery parcel. But this was not a clerical mistake
    of the trial court. AID had an affirmative duty to provide the trial court with
    additional information, and it did not do so. This does not strike us as a simple
    oversight, as may be the case with the Chancery parcel. We affirm the trial court's
    denial of a water right to the Splawn, Richardson, and Lynde parcels.
    CONCLUSION
    We hold that the decision in Ahtanum II, 
    330 F.2d 897
     was an adjudication
    of nontribal water rights. However, the federal Ahtanum litigation did not preclude
    the trial court here from considering the quantification of irrigable land on the
    reservation and we remand for further proceedings on this question. On remand,
    the trial court must also consider the Nation's right to store water.
    We affirm the trial court's conclusions regarding the rights of nontribal
    claimants to so-called excess water, reverse the trial court's application of the
    "determined future development" excuse under RCW 90.14.140(2)(c) for nonuse
    of the Hagemeiers' claimed water right, affirm the trial court's denial of several
    individual water rights claims, and remand to the trial court to correct an apparent
    clerical error regarding an individual parcel belonging to the Chancery.
    -55-
    Dep 't of Ecology v. Acquavella, et al., 86211-7
    Appropriate findings of fact and conclusions of law should be made on remand in
    accord with the parties' concessions at the appellate phase.
    This has been a lengthy and complex water right adjudication, and we
    commend the trial court and the parties for their diligent work over the many years
    they have lived with this case. Our decision today advances this adjudication one
    step closer to finality.
    -56-
    Dep 't ofEcology v. Acquavella, et al., 86211-7
    WE CONCUR:
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