Jurisdiction Requires Appealing the Operative (Superseding) IDWR Methodology Order Within 28 Days

I. Introduction

City of Idaho Falls v. Idaho Department of Water Resources (Idaho Sup. Ct. Feb. 25, 2026) is a jurisdictional decision arising out of the long-running Eastern Snake Plain Aquifer (“ESPA”) administration and the Surface Water Coalition (“SWC”) delivery call. The petitioners—City of Idaho Falls, City of Pocatello, and the Coalition of Cities (collectively, “the Cities”)—hold junior ground water rights in the ESPA. They sought judicial review of the Idaho Department of Water Resources Director’s (“Director”) post-hearing order that affirmed the Fifth methodology order with modifications while simultaneously issuing a Sixth methodology order that expressly superseded all prior methodology orders.

The key issue on appeal was not the merits of the modeling, data inputs, or standards for proving error in a methodology order. Instead, the Supreme Court addressed a threshold question: whether it had jurisdiction to grant the relief requested when the Cities did not petition for judicial review (in district court) of the operative order—the Sixth Methodology Order.

II. Summary of the Opinion

The Idaho Supreme Court dismissed the Cities’ appeal for lack of jurisdiction. The Court held that the Cities failed to invoke appellate jurisdiction because they did not timely seek judicial review of the Sixth Methodology Order—the only order “currently in effect” and the one that “supersedes all previously issued methodology orders.” Although the Cities litigated the Director’s post-hearing order (addressing the Fifth methodology order), the relief they sought on appeal required remand of the Sixth methodology order, which was never properly appealed within the 28-day statutory window under Idaho Code section 67-5273(2).

The Court also denied attorney fees requested under Idaho Code section 12-117(1), holding the statute did not apply because the adverse parties were a state agency and political subdivisions (not a “person” as the statute requires), and further because the intervenor (SWC) was aligned with the agency and thus not “adverse” to it.

III. Analysis

A. Precedents Cited

1. Timely identification of the challenged order is jurisdictional

  • S. Valley Ground Water Dist. v. Idaho Dep't of Water Res., 173 Idaho 762, 797, 548 P.3d 734, 769 (2024)
    Role in this case: This was the Court’s central modern authority for the proposition that a petition for judicial review must identify the specific final order being challenged, and that failure to timely challenge a final order is jurisdictional. The Court used S. Valley to reject attempts to “bootstrap” review of an unappealed order based on references, attachments, or relationship to other appealed matters.
  • City of Eagle v. Idaho Dep't of Water Res., 150 Idaho 449, 454, 247 P.3d 1037, 1042 (2011)
    Role in this case: Cited (via S. Valley) for the rule that the failure to timely challenge a final order “is jurisdictional,” barring review.

2. Appeals must be taken from the operative final order

  • A&B Irrigation District v. Spackman, 155 Idaho 640, 654–55, 315 P.3d 828, 842–43 (2013)
    Role in this case: The Court treated A&B as a close analogue: where the Director issued (i) an order after hearing and (ii) a separate final order incorporating “refinements.” There, failure to timely petition for review (or properly preserve objections) to the final operative order was fatal. The Court applied the same logic here: because the Sixth Methodology Order is the operative, superseding order, it must be the one appealed.

3. Standards of review and issue preservation framework

  • Rangen, Inc. v. Idaho Dep't of Water Res., 159 Idaho 798, 804, 367 P.3d 193, 199 (2016), abrogated on other grounds by 3G AG LLC v. Idaho Dep't of Water Res., 170 Idaho 251, 509 P.3d 1180 (2022)
    Role in this case: Provided the standard framework: on review, the Supreme Court independently reviews the agency record to determine whether the district court correctly decided the issues presented. Although the Court ultimately did not reach merits, it used Rangen as the conventional starting point for administrative appeals.
  • Clear Spring Foods, Inc. v. Spackman, 150 Idaho 790, 797, 252 P.3d 71, 78 (2011) (quoting Marcia T. Turner, L.L.C. v. City of Twin Falls, 144 Idaho 203, 209, 159 P.3d 840, 845 (2007))
    Role in this case: Reaffirmed issue-preservation limits: the Court will not consider issues not raised before the district court even if raised administratively—supporting the Court’s overall insistence on procedural correctness as a predicate to merits review.
  • Grace at Twin Falls, LLC v. Jeppesen, 171 Idaho 287, 291, 519 P.3d 1227, 1231 (2022)
    Role in this case: Cited for the principle that questions of law are freely reviewed.

4. Jurisdiction, mootness, and justiciability are mandatory threshold questions

  • Idaho Dep't of Health & Welfare v. Jane Doe (2022-36), 171 Idaho 692, 695, 525 P.3d 730, 733 (2023)
    Role in this case: Supported de novo review of jurisdiction.
  • State v. Barclay, 149 Idaho 6, 8, 232 P.3d 327, 329 (2010)
    Role in this case: Cited for free review of justiciability issues such as mootness.
  • Idaho Dep't of Health & Welfare v. Jane Doe (2024-04), 174 Idaho, 401, 412–13, 555 P.3d 1091, 1102–03 (2024), quoting Webb v. Webb, 143 Idaho 521, 524, 148 P.3d 1267, 1270 (2006)
    Role in this case: Reinforced that the Court must raise mootness sua sponte because it is jurisdictional. This undergirded the Court’s “bedrock” framing: an appeal from an order no longer in effect is moot and cannot support relief.

5. Attorney fees under Idaho Code section 12-117(1): “person” requirement and adversity

  • Coeur d'Alene Tribe v. Denney, 161 Idaho 508, 525–26, 387 P.3d 761, 778–79 (2015) (quoting Nation v. State, Dep't of Corr., 144 Idaho 177, 194, 158 P.3d 953, 970 (2007))
    Role in this case: Provided the “frivolously, unreasonably or without foundation” gloss on section 12-117.
  • S Bar Ranch v. Elmore County, 170 Idaho 282, 313, 510 P.3d 635, 666 (2022)
    Role in this case: Restated the statutory standard for awarding fees under section 12-117(1).
  • Citizens Against Linscott/Interstate Asphalt Plant v. Bonner Cnty. Bd. of Comm'rs, 168 Idaho 705, 720–21, 486 P.3d 515, 530–31 (2021)
    Role in this case: Established that a “person” cannot recover section 12-117(1) fees from another “person” merely because a governmental entity is present; the fee claimant must be adverse to the governmental entity.
  • Sullivan v. Blaine County, 174 Idaho 459, 469–70, 556 P.3d 1282, 1292–93 (2024)
    Role in this case: Applied the “adversity to the governmental entity” requirement to intervenors; an intervenor aligned with the government cannot recover under section 12-117(1).
  • Neighbors for Responsible Growth v. Kootenai County, 147 Idaho 173, 177, 207 P.3d 149, 153 (2009)
    Role in this case: The Court used this to support the inference that taking the “same position” is strong evidence that the parties are not “adverse.”

B. Legal Reasoning

1. The controlling procedural rule: appeal the order that governs

The Court’s reasoning is built on a strict but familiar administrative-law premise: courts only have authority to review agency action when the party invokes that authority in the manner the legislature prescribed. Under the Idaho Administrative Procedure Act, Idaho Code section 67-5273(2) requires a petition for judicial review to be filed within 28 days of service of the final order. And the petition must identify the order being challenged.

Here, the Director issued two documents on the same day:

  • Post-Hearing Order (affirming the Fifth Methodology Order with modifications), and
  • Sixth Methodology Order (adopting the methodology with modifications and expressly “supersed[ing] all previously issued methodology orders”).

The Supreme Court treated the supersession clause as dispositive for operability: regardless of how similar the Fifth and Sixth orders may be, only the Sixth remained legally operative. That meant any meaningful appellate relief would require disturbing the Sixth Order. But the Cities’ district-court petition for judicial review targeted only the Post-Hearing Order, and their “Statement of Issues” likewise focused on that order. Consequently, even a merits victory would not authorize remand of the Sixth Order.

2. Mootness-by-supersession: you cannot obtain relief from a displaced order

Although the Court framed the dismissal as “lack of jurisdiction,” the functional logic is akin to mootness: the Cities appealed an order that was no longer the governing rule because the Sixth Methodology Order superseded all prior methodology orders. The Court stated the principle directly: “If the order appealed from is no longer in effect, the appeal is moot.” Because the requested remedy (remand of the Sixth Order) could not be granted, the Court would not proceed to decide substantive questions.

3. No “practicality” exception to statutory appellate prerequisites

The Cities argued the Fifth and Sixth orders contained the same “errors” and that it “makes no practical difference if one is remanded while the other is not.” The Court rejected this as inconsistent with “bedrock” appellate principles: relief must be tied to an appeal from the operative order, timely and properly invoked. The decision thus reinforces a formal requirement with sharp consequences in water-administration litigation, where the Director may issue successive, superseding methodology orders.

4. Attorney fees: statutory inapplicability and lack of adversity

The Court’s fees analysis is a separate but notable holding. It denied fees under Idaho Code section 12-117(1) for two principal reasons:

  • No “person” adverse-party configuration. Section 12-117(1) applies only to proceedings “involving as adverse parties a state agency or a political subdivision and a person.” Cities are “political subdivisions,” not “persons” under the statute’s definitions. Therefore, the statutory predicate failed.
  • Intervenor alignment defeats adversity. Even if a private intervenor might sometimes recover fees, the SWC was “on the same side” as IDWR and thus not adverse to the governmental entity, defeating section 12-117(1) under Citizens Against Linscott/Interstate Asphalt Plant v. Bonner Cnty. Bd. of Comm'rs and Sullivan v. Blaine County.

C. Impact

1. Procedural discipline in water-rights administration challenges

The opinion strengthens a procedural gatekeeping rule for ESPA delivery call litigation (and administrative appeals generally): when the Director issues a superseding order, parties must timely petition for judicial review of that superseding order, not merely related or explanatory orders. This is particularly consequential in contexts where IDWR issues methodology orders that evolve over time and are expressly designed to supersede prior versions.

2. Strategic implications for litigants

  • Petition drafting must be order-specific. Parties should identify each final order for which relief may ultimately be required, and align the “statement of issues” accordingly.
  • Simultaneous orders require careful selection. When an agency issues a post-hearing order plus a revised final order, the revised final order is typically the one that controls prospective rights and obligations—making it the essential target for judicial review.
  • Preservation is not merely about issues; it is about the correct order. Even extensive merits briefing cannot cure a failure to invoke jurisdiction over the operative final agency action.

3. Attorney-fee exposure (or lack thereof) in agency-versus-city litigation

The decision also clarifies limits of Idaho Code section 12-117(1) in disputes involving governmental entities on both sides (state agency vs. city). Even where an appellant’s position is weak, section 12-117(1) may be unavailable if the statutory “person” requirement is not met. For private intervenors, the decision reiterates that alignment with the agency defeats adversity and thus fee recovery under that statute.

IV. Complex Concepts Simplified

  • Delivery call: A request by senior water-right holders for the state to “call out” (curtail) junior users when junior diversions allegedly cause injury to seniors under Idaho’s prior appropriation system (“first in time, first in right”).
  • Material injury: A legally significant level of harm to senior water rights, often assessed using hydrologic data and modeling; a finding can trigger curtailment of junior pumping unless mitigation is approved.
  • Methodology order: An agency order prescribing the models, data, assumptions, and procedures the Director will use to determine material injury (as distinct from an “as-applied” forecast or curtailment decision).
  • Superseding order: A new order that replaces earlier ones. If an order “supersedes” prior orders, it is typically the only one with legal effect going forward.
  • Petition for judicial review (IAPA): The document filed in district court to challenge an agency final order. Under Idaho Code section 67-5273(2), it must be filed within 28 days of service of the final order.
  • Jurisdiction / mootness: Courts can only decide cases where they have authority (jurisdiction) and where a decision can grant effective relief (not moot). If a challenged order is no longer operative and the operative order was not appealed, the court cannot grant the requested remedy.
  • Intervenor: A non-original party allowed to join litigation because it has an interest in the outcome. Fee recovery under Idaho Code section 12-117(1) requires, among other things, that the intervenor be adverse to the governmental entity—not aligned with it.

V. Conclusion

The Court’s substitute opinion establishes a clear procedural rule with substantial practical effect in Idaho administrative water law: appellate jurisdiction depends on a timely petition for judicial review directed to the operative final order. When the Director issues a superseding methodology order, litigants must challenge that superseding order within the statutory 28-day window, or courts cannot remand it—no matter how fully the merits are briefed.

The decision also narrows attorney-fee claims under Idaho Code section 12-117(1) in government-versus-government disputes and reiterates that intervenors aligned with the agency are not “adverse” for purposes of that fee statute. Overall, the case underscores that in complex, fast-moving water-administration disputes, procedural precision can determine whether courts can reach the merits at all.