AquAlliance v. Vina Groundwater Sustainability Agency

California Court of Appeal·Decided July 30, 2026·No. C102382·Published

Opinion

Filed 7/30/26 CERTIFIED FOR PUBLICATION

IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA THIRD APPELLATE DISTRICT (Butte)

AQUALLIANCE et al., C102382 Plaintiffs and Appellants, (Super. Ct. No. 22CV00321) v.

VINA GROUNDWATER SUSTAINABILITY AGENCY et al., Defendants and Appellants.

APPEAL from a judgment of the Superior Court of Butte County, Tamara L. Mosbarger, Judge. Affirmed. Law Office of Adam Keats, Adam Keats; Aqua Terra Aeris Law Group, Jason R. Flanders and Harrison M. Beck for Plaintiffs and Appellants. Paris Kincaid & Wasiewski, Valerie C. Kincaid and Jonathan R. Marz for Defendant and Appellant Vina Groundwater Sustainability Agency. Minasian Law, Paul Ryan Minasian, Dustin C. Cooper and Aidan P. Wallace for Defendant and Appellant Rock Creek Reclamation District. Rob Bonta, Attorney General, Annadel A. Almendras, Assistant Attorney General, Sierra S. Arballo, Colleen R. Flannery and Kathryn L. Patterson, Deputy Attorneys General, for Department of Water Resources as Amicus Curiae.

1 More than three decades after a blue-ribbon commission recommended statewide groundwater regulation (The Governor’s Com. to Review Cal. Water Rights Law, Final Rep. (Dec. 1978) pp. 165-166, 168), the Legislature enacted the Sustainable Groundwater Management Act in 2014, which is commonly known as SGMA (Wat. Code,1 § 10720 et seq.) (Act). The Act has a simple but expansive purpose: “To provide for the sustainable management of groundwater basins.” (§ 10720.1, subd. (a); see Legis. Counsel’s Dig., Sen. Bill No. 1168 (2013-2014 Reg. Sess.) p. 1 [“This bill would state the policy of the state that groundwater resources be managed sustainably”].) A key tool to achieve this purpose is requiring certain local groundwater sustainability agencies to develop groundwater sustainability plans2 for their basins. (§ 10727, subd. (a).) After adoption, the groundwater sustainability agency must submit the plan to the Department of Water Resources (Department), which has two years to conduct an initial evaluation of the plan (§ 10733.4, subds. (a), (d)), and then has an ongoing obligation to periodically review the plan to ensure it conforms with plan content requirements and “is likely to achieve the sustainability goal for the basin” (§ 10733, subd. (a)). As relevant here, the Act also includes a validation provision permitting a “groundwater sustainability agency that adopts a groundwater sustainability plan [to] file an action to determine the validity of the plan … no sooner than 180 days following the adoption of the plan.” (§ 10726.6, subd. (a).) This case examines the intersection between the Department’s evaluation and a judicial validation action. Plaintiffs AquAlliance, California Water Impact Network, and California Sportfishing Protection Alliance filed a validation action under the Act challenging the groundwater sustainability plan adopted by defendants Vina Groundwater

1 Further undesignated section references are to the Water Code. 2 We generally refer to these plans as groundwater sustainability plans; however, at times throughout the opinion we also refer to them as plans or sustainability plans.

2 Sustainability Agency and Rock Creek Reclamation District, asserting the plan “fails to achieve sustainable groundwater management.” A validation action such as this brought by an interested party to invalidate an act is often called a reverse validation action. (Davis v. Fresno Unified School Dist. (2020) 57 Cal.App.5th 911, 927 (Davis).) The Department “approved” defendants’ plan while the litigation was pending, and the trial court granted defendants’ motion to dismiss plaintiffs’ reverse validation action on the ground that the Department’s approval mooted the action. Plaintiffs appeal this dismissal, arguing the Act’s validation procedures and the Department’s review are two separate procedures and the Act “does not limit the scope of validation claims.” We affirm, concluding the trial court did not abuse its discretion in effectively applying the primary jurisdiction doctrine. This doctrine permits trial courts to stay and potentially dismiss actions where there is “a ‘pervasive and self-contained system of administrative procedure’ ” addressing the same issue. (Farmers Ins. Exchange v. Superior Court (1992) 2 Cal.4th 377, 396 (Farmers).) The Act is such a statutory scheme, and plaintiffs’ action sought to perform the same evaluation the Act mandated the Department to perform, which justified the eventual dismissal of plaintiffs’ action once the Department completed its evaluation. FACTUAL AND PROCEDURAL BACKGROUND3 Defendants adopted a groundwater sustainability plan under the Act in December 2021 and submitted it to the Department on January 28, 2022. Plaintiffs filed a

3 Defendants filed a request for judicial notice of a State Water Resources Control Board (Board) meeting agenda showing state intervention under the Act, a petition for writ of mandate plaintiffs filed challenging the Department’s approval of defendants’ plan, and complaints in two other actions challenging other groundwater sustainability plans. We deny this request because the documents are not relevant to the resolution of this appeal. (See City and County of San Francisco v. Uber Technologies, Inc. (2019) 36 Cal.App.5th 66, 72, fn. 3 [denying requests for judicial notice for irrelevant documents].)

3 “complaint in validation” on February 14, 2022, under section 10726.6, subdivision (a). (Boldface and capitalization omitted.) The complaint asserted one cause of action for violation of the Act, alleging: “[Defendants’ plan] fails to achieve sustainable groundwater management and fails to provide for ‘the management and use of groundwater in a manner that can be maintained during the planning and implementation horizon without causing undesirable results,’ including in the manners described in the paragraphs below.” The complaint then includes subsidiary allegations such as the plan “is not likely to achieve its sustainability goal within 20 years”; it “improperly accepts [m]inimum [t]hresholds that are unreasonably low”; “[m]inimum [t]hresholds permit unreasonable and undesirable impacts on trees, vegetation, and wetlands”; and it “does not identify reasonable measures and schedules to eliminate data gaps.” Defendants filed a demurrer arguing plaintiffs’ complaint was an unauthorized reverse validation action and brought before the trial court had jurisdiction. The trial court overruled the demurrer, finding section 10726.6 permits reverse validation actions and though the complaint was filed before the provision’s 180‑day delay for validation actions, that date had subsequently passed and defendants were not prejudiced. Plaintiffs filed a motion for summary judgment on November 14, 2023. The motion made three arguments: (1) The plan’s “ ‘measurable objective’ and ‘minimum threshold’ for groundwater levels violate [the Act] in several ways”; (2) the plan “never explains whether a sufficient correlation exists between groundwater elevation and interconnected surface waters to justify using groundwater levels as a proxy for monitoring impacts to interconnected surface waters”; and (3) “the ‘minimum threshold’ selected for monitoring impacts on land subsidence is unlawfully weak.” The trial court denied the motion in March 2024, finding it premature because the adoption of the plan appeared to the court “to be a quasi‑legislative activity” requiring an administrative record that had not yet been compiled.

4 Defendants filed a motion to dismiss in June 2024 arguing the Department’s approval of defendants’ plan in July 2023 mooted plaintiffs’ validation action. Defendants included a request for judicial notice of the Department’s approval that found, in part, defendants’ plan “appears likely to achieve the sustainability goal for the” groundwater basin.

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