A wrap-up of posts published on Maven’s Notebook this week …
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In California water news this week …
‘Brutal’ groundwater plan may be only path forward for Tulare County growers
“Farmers in southeastern Tulare County left hanging after their old groundwater agency disintegrated have new leadership but their path forward will not be easy. “We’ve got some serious issues to deal with and our groundwater sustainability plan will be brutal,” said Mike George, chairman of the new Tule East Joint Powers Authority Groundwater Sustainability Agency. He told SJV Water he expects the new GSA will have to fallow at least half its irrigated land. That will be a huge economic hit to the region. “I’m prepared for everyone to criticize me,” he said. The new Tule East GSA was created from lands left behind as water districts fled the Eastern Tule GSA. The exodus began after the state Water Resources Control Board put the region on probation in 2024 and specifically called out Eastern Tule for continued subsidence and what it said were “alarming” groundwater accounting methods. Eastern Tule had covered 162,000 acres, about 86,000 of which are so-called “white lands.” That means they are not within the boundaries of water districts, which are typically color coded on maps. … ” Read more from SJV Water.
Metropolitan navigates choppy waters
“California’s largest drinking water supplier is trying to turn the page. The Metropolitan Water District of Southern California, which imports and sells water to 19 million people in Los Angeles and the surroundings, earlier this month zeroed in on Shivaji Deshmukh, the current general manager of the Inland Empire Utilities Agency, to replace retiring General Manager Deven Upadhyay, according to three people with knowledge whom POLITICO granted anonymity to discuss ongoing internal deliberations. Metropolitan Board Chair Adán Ortega said in a statement that the board had selected a finalist but would not release the name until contract negotiations were final “in line with best employment practices to protect candidate privacy.” He said the board expected to announce its appointment in October following the conclusion of the negotiations. … ” Read more from Politico.
Rollins meets with Potter Valley farmers and ranchers, vows to fight for their water

“Agriculture Secretary Brooke Rollins recently met with about a half dozen stakeholders local to the Potter Valley Project, a hydroelectric plant in Northern California slated for removal. Through my reporting at UNWON I’ve connected with leaders in the Trump administration and was honored to help coordinate the meeting by organizing a non-partisan coalition of local leaders, farmers, ranchers, and business owners to meet with Secretary Rollins. These individuals discussed the future of the Potter Valley Project, the devastation its removal would have on the region, and the inadequacy of proposed alternative solutions including the so-called “Two-Basin Solution.” The following Sunday evening, Secretary Rollins posted a message to her X account in support of the effort to protect this water supply, which is vital to thousands of generational farms and ranches in Northern California … ” Continue reading at the Fence Post.
DELTA CONVEYANCE PROJECT: Securing statewide water supplies part 8: Protecting important agricultural land in the Delta and throughout California

“Agriculture is vital to California’s economy and intrinsic to our way of life. Beyond the Golden State, we produce 13% of the nation’s total agricultural value, which wouldn’t be possible without reliable water supplies. The Delta region is an especially important agricultural area, with over 500,000 acres of productive farmland. It also supports local jobs and businesses. The Delta Conveyance Project, which is designed to improve water supply reliability for the State Water Project (SWP) and the 750,000 acres of irrigated farmland throughout California that depend on it, has been carefully planned to minimize its impact on Delta farmland. Some agricultural land will be used for the Delta Conveyance Project. However, the Department of Water Resources (DWR) and Delta Conveyance Design and Construction Authority (DCA) are taking significant and genuine steps to limit these impacts, involve local farmers in the planning, and compensate fairly for any losses. … ” Read more from DWR.
Water resilience, climate change, and water systems in California
“California’s water systems are at a pivotal moment. The pressures of climate change, population growth, aging infrastructure, and persistent inequities in water access are converging to create unprecedented challenges. At the same time, the state is moving forward with an ambitious, integrated vision for a resilient future, embodied in the California Water Plan Update 2023 (CWP-2023). Building on a long-standing tradition of five-year updates, CWP-2023 recognizes the urgency of climate impacts, the necessity of watershed-scale thinking, and the central role of equity in water policy. For the first time, it includes a chapter co-authored with California Native American Tribes, ensuring Indigenous knowledge, priorities, and rights are integrated into statewide planning. The plan serves as a strategic framework. … ” Read more from UCANR.
Reviving the Golden State’s meadows and watersheds: An essential part of California’s water security
“High in the mountains, thousands of feet above where most Californians live, are alpine forests and mountain meadows which serve a critical role for water supply. That’s why the California Department of Water Resources (DWR), in partnership with federal, local, and private organizations, is collaborating on transformative restoration efforts in the Upper Feather River Watershed. These projects include meadow restorations and large scale forest management actions that are vital to enhancing the State Water Project (SWP) and safeguarding the water supply for 27 million Californians. Over the last two decades, DWR and the U.S. Forest Service partnered with the nonprofit Plumas Corp and numerous other agencies and entities to restore several meadows in the Upper Feather River Watershed, including Thompson Creek, Red Clover Valley, and Upper Dotta Canyon. Functioning meadows act like giant sponges, storing and slowly releasing water through drier months. Upper Feather River Watershed meadows filter water upstream of Lake Oroville, the SWP’s largest water storage reservoir which holds over 3.4 million acre-feet of winter and spring runoff that can be released throughout the year to serve nearly two-thirds of Californians. Upper Feather River Watershed meadows provide many benefits … ” Continue reading from DWR.
State Water Board releases draft scientific report on proposed Tuolumne River Voluntary Agreement

“[Friday], the State Water Resources Control Board released a Draft Scientific Basis Report Supplement that analyzes the science underpinning a proposed voluntary agreement for the Tuolumne River, a tributary of the Lower San Joaquin River. The draft report is an initial step in the process to consider amendments to the Water Quality Control Plan for the San Francisco Bay/Sacramento-San Joaquin Delta (Bay-Delta Plan) to possibly incorporate the proposed agreement. The draft was developed jointly by staff from the board, California Department of Water Resources and California Department of Fish and Wildlife. The draft report documents the science related to the proposal, which was submitted to the board in 2022 by the San Francisco Public Utilities Commission, Modesto Irrigation District and Turlock Irrigation District. The agreement proposes flow and non-flow habitat commitments to improve conditions for native fish in lieu of flow requirements that were included in the Bay-Delta Plan in 2018. … ” Read the full notice from the State Water Board.
Court: Agricultural drains may operate without permit

“In what has been described as a resounding legal victory for agriculture, a federal appeals court has ruled that irrigation return flows discharged to waters of the United States through agricultural drains remain exempt from federal permitting requirements. The 9th U.S. Circuit Court of Appeals decided earlier this month that operation of a large-scale Central Valley agricultural drainage system does not require a permit under the federal Clean Water Act because the discharge is composed entirely of return flows from irrigated farmlands. The three-judge panel upheld the dismissal of a lawsuit alleging that the U.S. Bureau of Reclamation and the San Luis & Delta Mendota Water Authority’s operation of the Grassland Bypass Project and the San Luis Drain violated the Clean Water Act. … ” Read more from Ag Alert.
SEE ALSO: Ninth Circuit Clarifies Clean Water Act Irrigated Flows Exemption, from Somach Simmons & Dunn
Marine heatwave ‘blob’ returns in Pacific, rivaling past events in size and impact
“In 2013, scientists noticed a block of unusually warm water detected in the Pacific Ocean between the Gulf of Alaska and the Coast of Southern California. This was recognized by meteorologists as a basin-scale marine heatwave (MHW), often referred to as “the blob”. This water mass hung around from 2013-2016 before re-emerging again in July of 2019 (known as Blob 2.0) and lasting 20 months. In May 2025, the blob reappeared. Rachel Hager, a spokesperson for NOAA Fisheries, said this new MHW has grown “approximately the same size as the contiguous U.S.” She added it now ranks among the top three largest MHWs ever recorded in the northeast Pacific Ocean since monitoring began in 1982. … ” Read more from KATU.
In commentary this week …
The cost and the upside of the “big gulp”
Edward Ring, Director of Water and Energy Policy at the California Policy Center, writes, “Of all the possible ways to increase California’s water supply, nothing compares to the potential of the so-called “big gulp,” that is, the ability of new and improved water infrastructure to safely divert millions of acre feet from the Sacramento-San Joaquin Delta during high winter flows. How much water? A study published by the Public Policy Institute of California offers an answer to this question. They measured flows through the delta over a 37 year period through 2016 and classified the volumes of water into categories including diversions for farm irrigation and municipal use, flows essential to maintain the health of the delta ecosystems, and the intriguing category “uncaptured water.” They estimated the volume of “uncaptured water” to average 11.3 million acre feet per year over the 1980-2016 period. It’s important to avoid concluding that 100 percent of this uncaptured water could be safely diverted. … ” Read more from Edward Ring.
California salmon runs in danger of extinction if Newsom fails to act
Scott Artis, the executive director of the Golden State Salmon Association, writes, “Last week, California’s ocean recreational salmon fishing season closed for 2025. The recreational season lasted six days — after two fully closed seasons. California’s commercial fishing fleet has been unable to fish for three years. Our state’s traditional treasured salmon fishing, stretching from Morro Bay to the Oregon border, is in danger as never before. It’s time for decisionmakers to change course. Closed salmon runs mean closed tackle shops, and struggling motels, marinas and marine supply stores. Fishing communities, which should be bustling through a long fishing season, are becoming ghost towns. Our restaurants, markets and dinner tables are bare of delicious and healthful California salmon. When runs are healthy, California’s salmon fishing industry supports 23,000 jobs and $1.4 billion in economic activity. Today, salmon fishing faces three grim threats. … ” Read more from the San Jose Mercury News.
Ground-breaking California study examines synthetic turf safety
Scott Gerber, program director for the Better Play Initiative, writes, “California takes a back seat to no one on protecting environmental safety and public health. And so, when the state’s experts weigh in on an issue, their voices carry. Across the nation, there are questions about the use of synthetic turf fields with crumb rubber infill. People are understandably interested about the impact on the health and safety of their children and other family members. The good news is that scientists from California’s leading public health agencies have produced one of the most comprehensive reviews to date on the subject. The draft study, published by the California Environmental Protection Agency (CalEPA) and Office of Environmental Health Hazard Assessment (CalOEHHA) in March 2025, found “no significant health risks to players, coaches, referees and spectators from on-field or off-field exposure” to synthetic turf using crumb rubber infill. … ” Read more from Capitol Weekly.
Trump’s proposed changes to the Endangered Species Act are ‘environmental sabotage’
Ariel Evan Mayse, an associate professor of religious studies at Stanford University and founding member of ACRE: Applied Collaboratory for Religion of Ecology, and Emily Zinkula, also a member of the ACRE leadership team and a second-year law student at Stanford University, write, “Green sea turtles are rare but welcome visitors to the Bay Area, delighting visitors and residents as they appear in waters near the Berkeley Marina, the Greater Farallones National Marine Sanctuary and just off the Golden Gate Bridge. These charismatic reptiles, the second-largest sea turtle species, are gentle herbivores that provide vital ecosystem services by consuming algae, seagrass and seaweed. Green sea turtles are susceptible to ocean pollution and climate change, and are particularly vulnerable to the harms of habitat destruction, including coastal and offshore development and resource extraction. Despite a nominal recovery in recent years, they are threatened, and without the essential defense afforded by the Endangered Species Act, the green sea turtle will follow other species into extinction. Over the past half-century, the Endangered Species Act has been successful in preventing injuries to plants and creatures in peril. It has protected beloved animals like the bald eagle, California condor, the black-footed ferret and the gray whale. But under the Trump administration, the act is now under dire threat. … ” Read more from the San Francisco Chronicle.
C-WIN: The secret meeting that privatized public water supplies
Carolee Krieger, C-WIN Executive Director, writes, “Water policy is convoluted, difficult to parse, and usually proceeds incrementally. But sometimes things happen that dramatically alter the legal and regulatory landscapes. It can be a court ruling, such as the 1983 National Audubon v Superior Court decision, which established limits on the amount of water the City of Los Angeles can take from Mono Lake. Or it can be legislation such as the 1992 Central Valley Improvement Act, which mandated changes in the federal Central Valley Project for the protection and revitalization of fisheries and wildlife habitat. Or it can be something that occurs with little attendant public awareness, but which has profound impacts on the way water is allocated and used. The Monterey Amendments are the prime case in point. … ” Read more from C-WIN.
In regional water news this week …
California water board to address pesticide crisis in Smith River estuary
“The California North Coast Regional Water Board will convene a special meeting on October 8 in Crescent City to address the escalating pesticide contamination crisis in the Smith River estuary. The meeting will gather testimony from residents, scientists and conservation groups advocating for the elimination of toxic pesticide use on lands surrounding the estuary. The Siskiyou Land Conservancy (SLC) and the Environmental Protection Information Center (EPIC) are urging North Coast residents to attend the meeting and demand that the Water Board enforce a “zero discharge” policy for pesticide residues from Easter lily farms into the estuary. Currently, the Water Board is developing an “agricultural permit” under the Federal Clean Water Act, which would allow continued pesticide pollution by lily farmers. … ” Read more from KRCR.
NOTICE of Preparation and Scoping Meetings for an Environmental Impact Report for the Potter Valley Hydroelectric Project Surrender and Decommissioning
“The State Water Resources Control Board (State Water Board), as the lead agency under the California Environmental Quality Act, has released a Notice of Preparation (NOP) and scoping meetings for an Environmental Impact Report in anticipation that the Pacific Gas and Electric Company (PG&E) will apply to the State Water Board for a Clean Water Act section 401 water quality certification for the Proposed Project. The State Water Board is accepting written comments on the NOP from the date of this notice through 4:00 p.m. on November 3, 2025.” Read the full notice here.
Last of lead cable removed from Baldwin Beach at Lake Tahoe
“The lead-sheathed telecommunications cables resting in Lake Tahoe for decades are now out. In November 2024, agencies announced the eight miles of cable between Baldwin Beach and Rubicon Bay, but there was still one section remaining. Last week, AT&T and its partners removed the last few dozen yards of lead cable that had resided in the sands of Baldwin Beach and under the bed of Tallac Creek for nearly 70 years. “Thank you to everyone for your support throughout the journey to removal,” Evan Dreyer told his followers via email on Sunday. “The execution of this important work is an unequivocal win for Lake Tahoe, and the culmination of years of efforts and coordination across government agencies, corporations and their partners, legal teams, various local groups, the community, and countless others. Together, we delivered this awesome, tangible outcome for future generations, and that next time you jump in the water should feel a little extra special.” … ” Read more from South Tahoe Now.
Lower Yuba River project spikes controversy and calls for managing predatory striped bass

“A nature-like fishway project is being constructed at Daguerre Point Dam on the lower Yuba River approximately 10 miles east of Marysville, and local fishing and conservation groups are concerned about the fate of wild salmon and steelhead. The $60 million project will create a water path around the Daguerre Point Dam to allow species to access spawning habitat upstream. … The current ladders do not allow the endangered green sturgeon to pass, and federal agencies identified the dam as a barrier for the green sturgeon over a decade ago — prompting the fishway project that is slated to begin next year. … Rinella and the co-chairs of the Conservation Committee do not agree that the green sturgeon recovery plan in the lower Yuba River is necessary, when the Sacramento River currently supports the sturgeon population. … ” Read the full story at The Union.
Yolo County Urgency Ordinance 1576 imposes a groundwater well permitting moratorium on new or modified agricultural wells within focus areas
“On August 26, 2025, the Yolo County Board of Supervisors (“Board”) adopted an urgency ordinance (Urgency Ordinance (“UO”) No. 1576) that imposes a 45-day moratorium for the issuance of new or modified agricultural groundwater well-permits in designated “Focus Areas” (see Figure 1 below). In addition to preventing the issuance of new permits, the moratorium will prevent Yolo County from approving eleven pending well permit applications that were submitted before the moratorium was put in place. The Board scheduled another public hearing for October 7, 2025, where it will consider extending the moratorium for an additional 10 months and 15 days (another year-long extension can be approved in August 2026). … ” Continue reading from the Kronick Law Firm.
Oakland Coliseum has been pumping groundwater into the bay for years — without a permit
“For decades, the Oakland Coliseum has quietly discharged thousands of gallons of water into a slough that flows to San Leandro Bay without a permit, even though stadium officials said this week they “probably” needed one all along. Now, with the land about to be privately sold, they are prepared to obtain one. The whole process could cost taxpayers $659,000, between money spent on consultants, studies and a permitting process overseen by the San Francisco Bay Regional Water Quality Control Board. The city- and Alameda County-run authority that makes decisions for the Coliseum will pick up the bill, though it may need to dip into budget reserves to do so. … ” Read more from the San Jose Mercury News.
New DWA water rules create compliance challenges for HOAs despite conservation goals
“Desert Water Agency (DWA) has adopted a new ordinance banning potable water irrigation on non-functional turf to meet state conservation mandates, but property management companies warn the rules could create financial hardships for HOAs unprepared for costly landscape conversions. Ordinance number 80, adopted in early August in response to California Assembly Bill 1572, specifically targets grass areas that are not regularly used for recreational or community events, said Clark Elliott, conservation manager with DWA, during an Organized Neighborhoods of Palm Springs (ONE-PS) meeting earlier this month. The bill, signed into law in October 2023, prohibits the use of water used primarily for drinking to irrigate non-functional turf on certain properties. DWA adopted the ordinance as part of broader state regulations requiring the 40% reduction by 2040 under the “Making Conservation a California Way of Life” legislation. … ” Read more from the Palm Springs Post.
Imperial Irrigation District selects former Interior Deputy Secretary to bolster federal presence on water, power issues
“The Imperial Irrigation District (IID) announced on Tuesday it has enlisted Tommy Beaudreau, the former Deputy Secretary of the U.S. Department of the Interior, and the international law firm WilmerHale to significantly strengthen its advocacy in Washington, D.C., on pivotal interstate water and federal energy policies. Beaudreau, a figure respected across party lines for his leadership on natural resource policy, will partner with WilmerHale’s government relations team, including Republican lead Rob Lehman. The move signals IID’s intent to aggressively protect its interests as the Colorado River Basin faces a historic reckoning. “We are deeply aware of the stakes for the Colorado River and the communities it sustains,” said IID Board President Gina Dockstader. “Tommy Beaudreau’s bipartisan relationships and proven record of effectiveness make him the right person to assist IID in shaping solutions for the entire Basin.” … ” Read more from the Imperial Irrigation District.
Negotiations stall as Colorado River crisis looms again

“Time is running out for the seven states in the Colorado River Basin, as well as 30 tribes and Mexico, to reach a long-term deal for managing the overtapped river. The current guidelines and drought contingency plans for the river expire at the end of next year, and negotiators have until Nov. 11 to reach a new agreement or risk intervention by the federal government. Meanwhile, after one of the river’s driest years on record, reservoir levels at Lake Mead and Lake Powell have again declined, prompting warnings from federal officials and hydrological experts. “The urgency for the seven Colorado River Basin states to reach a consensus agreement has never been clearer,” Scott Cameron, acting assistant secretary for water and science at the U.S. Department of the Interior, said last month in a statement. “We cannot afford to delay.” … ” Read more from Ag Alert.