Chino Basin Municipal Water District v. City of Ontario CA4/2

California Court of Appeal·Decided April 18, 2025·No. E080457·Unpublished

Opinion

Filed 4/18/25 Chino Basin Municipal Water District v. City of Ontario CA4/2

NOT TO BE PUBLISHED IN OFFICIAL REPORTS California Rules of Court, rule 8.1115(a), prohibits courts and parties from citing or relying on opinions not certified for publication or ordered published, except as specified by rule 8.1115(b). This opinion has not been certified for publication or ordered published for purposes of rule 8.1115.

IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA FOURTH APPELLATE DISTRICT DIVISION TWO

CHINO BASIN MUNICIPAL WATER DISTRICT, E080457, E082127

Plaintiff and Respondent, (Super.Ct.No. RCVRS51010)

v.

OPINION

CITY OF ONTARIO,

Defendant and Appellant;

CUCAMONGA VALLEY WATER DISTRICT, et al.,

Defendants and Respondents.

APPEAL from the Superior Court of San Bernardino County. Gilbert G. Ochoa, Judge. Reversed and remanded with directions.

Stoel Rives LLP, Elizabeth P. Ewens, Michael B. Brown and Whitney Brown, for Defendant and Appellant, City of Ontario.

Brownstein Hyatt Farber Schreck, LLP, Scott S. Slater, Bradley J Herrema and Laura K. Yraceburu, for Plaintiff and Respondent, Chino Basin Watermaster.

Lagerlof, LLP and Thomas S. Bunn III, for Defendants and Respondents, Fontana Water Company and Cucamonga Valley Water District.

JC Law Firm, Jean Cihigoyenetche and J. Martin Cihigoyenetche, for Defendant and Respondent Inland Empire Utilities Agency.

A 1978 stipulated judgment (Judgment) governs the water rights in the Chino Groundwater Basin (Basin) by establishing the Basin’s governance structure, providing judicial oversight via continuing jurisdiction provisions, and creating the Chino Basin Watermaster (Watermaster). To achieve full utilization of the Basin’s resources, Watermaster adopted, and the superior court approved, a long-term management program, one element of which instituted an objective and strategy to develop storage and recovery programs for the broad regional benefit of the parties to the Judgment. One such program—Dry Year Yield Program (DYY Program)—stores extra groundwater during wet years and then recovers the water during dry years. To finance its actions, Watermaster establishes an annual budget and assesses parties to the Judgment based on their groundwater production.

In this consolidated appeal, one party to the Judgment, the City of Ontario (Ontario), challenges Watermaster’s fiscal year (FY) 2021/2022 and 2022/2023 assessments on the grounds Watermaster failed to levy assessments on the groundwater voluntarily produced as part of the DYY Program based upon its erroneous interpretation and application of the 2019 Letter Agreement that amended the agreement that governs the DYY Program. The superior court, inter alia, found Ontario’s challenge to be an untimely and improper objection to the 2019 Letter Agreement—entered into between

Three Valleys Municipal Water District (TVMWD),1 Watermaster, Metropolitan Water District of Southern California (Metropolitan), and Inland Empire Utilities Agency (IEUA)—and further held that stored and supplemental water (from the DYY Program or other storage programs) are exempt from Watermaster assessment.

On appeal, Ontario requests reversal of the superior court’s orders and remand with instructions to (1) direct Watermaster to implement the DYY Program in a manner consistent with the Judgment and prior court orders, (2) correct and amend the FY 2021/2022 and 2022/2023 Assessment Packages to assess water produced from the DYY Program, and (3) invalidate the 2019 Letter Agreement and direct Watermaster to comply with the process provided for in the Judgment and subsequent court orders when approving material changes to the DYY Program.

We conclude the superior court erred in finding Ontario’s challenges to be untimely and in affirming Watermaster’s interpretation of the 2019 Letter Agreement. We therefore reverse.

I. PROCEDURAL BACKGROUND AND FACTS A. The Judgment, Pools, and Watermaster.

In 1975, Chino Basin Municipal Water District (later known as IEUA) initiated this action against several parties to adjudicate their rights and obligations with respect to groundwater in the Basin, one of the largest groundwater basins in Southern California, providing water to millions of residents in San Bernardino, Riverside, and Los Angeles

1 Referred to in the Judgment as Pomona Valley Municipal Water District.

Counties. Three years later, the parties stipulated to the Judgment, which created a water management plan for the Basin—the Optimum Basin Management Program—by, among other things, setting a safe yield (maximum extraction amount) for the Basin; establishing three stakeholder groups or “pools”—the Overlying Agricultural Pool (Ag Pool), Overlying Non-Agricultural Pool (Non-Ag Pool), and Appropriative Pool (Ap Pool)— each with its own safe yield, rights, and restrictions; and allowing the superior court to retain and exercise jurisdiction via the appointment of Watermaster, an arm of the court. (Dow v. Honey Lake Valley Resource Conservation Dist. (2021) 63 Cal.App.5th 901, 911 [observing that Watermaster is “‘considered an arm of the Court’”].) As an arm of the court, Watermaster administers and enforces the Judgment and any subsequent instructions or orders of the superior court.

The Pools are responsible for costs of replenishment water and other aspects of the physical solution. Each Pool has a committee that administers its internal affairs, employs its own separate counsel, may seek judicial review of any Watermaster action or failure to act, and—along with an Advisory Committee—provides advice and assistance to Watermaster on the administration of the Judgment. Ontario is a member of the Ap Pool. Watermaster, a nine-member board, is comprised of representatives of parties to the Judgment, including representatives from each Pool. It “administer[s] and enforce[s] the provisions of this Judgment and any subsequent instructions or orders of the [c]ourt,” keeps records of water use and ownership, oversees and approves water transfers, monitors groundwater levels, determines the operating safe yield for each year,

and assesses the Pools for its expenses. However, the court retains “[f]ull jurisdiction, power and authority . . . as to all matters contained” in the Judgment. B. The Basin’s Safe Yield The Judgment identifies the Basin’s safe yield, namely, the amount of water that can be withdrawn annually without harming or depleting the Basin.2 The safe yield defines the parties’ various rights to Basin groundwater. Parties are prohibited from producing groundwater except as provided in the Judgment, specifically “pursuant to the provisions of the Physical Solution or a storage water agreement.” Also, a party’s individual groundwater production establishes the party’s portion/assessment of Basin costs. The Judgment set the initial safe yield at 140,000 acre-feet (AF) per year; however, in 2017, the superior court reset it to 135,000 AF per year. C. The Basin’s Groundwater Storage.

The Judgment acknowledges the Basin’s “substantial amount of available groundwater storage capacity” for “storage and conjunctive use of supplemental water

2 “‘Safe yield’ means the long-term average annual quantity of groundwater (excluding Replenishment Water or Stored Water but including return flow to the Basin from use of Replenishment or Stored Water) which can be Produced [(pumped or extracted groundwater)] from the Basin under cultural conditions of a particular year without causing an undesirable result.” “The phrase ‘undesirable result’ is understood to refer to a gradual lowering of the groundwater levels resulting eventually in depletion of the supply.” (City of Los Angeles v. City of San Fernando (1975) 14 Cal.3d 199, 278 [safe yield is “‘the maximum quantity of water which can be withdrawn annually from a groundwater supply under a given set of conditions without causing an undesirable result’”], disapproved on other grounds in City of Barstow v. Mojave Water Agency (2000) 23 Cal.4th 1224, 1247-1248.)

Free access — add to your briefcase to read the full text and ask questions with AI

Chino Basin Municipal Water District v. City of Ontario CA4/2, (Cal. Ct. App. 2025).

Chino Basin Municipal Water District v. City of Ontario CA4/2 (Chino Basin Municipal Water District v. City of Ontario CA4/2) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

Related

Aryeh v. Canon Business Solutions, Inc.
292 P.3d 871 (California Supreme Court, 2013)
Brosterhous v. State Bar
906 P.2d 1242 (California Supreme Court, 1995)
Vons Companies, Inc. v. Seabest Foods, Inc.
926 P.2d 1085 (California Supreme Court, 1996)
City of Los Angeles v. City of San Fernando
537 P.2d 1251 (California Supreme Court, 1975)
Moss Development Co. v. Geary
41 Cal. App. 3d 1 (California Court of Appeal, 1974)
County of San Diego v. State of California
164 Cal. App. 4th 580 (California Court of Appeal, 2008)
Central & West Basin Water Replenishment District v. Southern California Water Co.
135 Cal. Rptr. 2d 486 (California Court of Appeal, 2003)
Travis v. County of Santa Cruz
94 P.3d 538 (California Supreme Court, 2004)
City of Barstow v. Mojave Water Agency
5 P.3d 853 (California Supreme Court, 2000)
Howard Jarvis Taxpayers Ass'n v. City of La Habra
23 P.3d 601 (California Supreme Court, 2001)
County of Sonoma v. Superior Court
190 Cal. App. 4th 1312 (California Court of Appeal, 2010)