Two of California's largest water agencies just stepped back from the state's uncompensated Colorado River conservation commitment, the State Water Board put a date on the Tulare Lake interim plan along with a pumping fee that would climb from twenty to thirty-five dollars an acre-foot, and the two permits that made fast winter recharge possible have quietly expired. We also cover a tight delivery window on the Delta-Mendota Canal, a proposed land-based assessment at Westlands, and some genuinely good subsidence news out of Ventura County.

This week's meetings:

• Palo Verde Irrigation District — Metropolitan and Imperial ID managers told the board they will not proceed with California's 440,000 acre-feet of uncompensated conservation under the current Lower Basin framework

• South Fork Kings GSA — State Water Board timeline for a Tulare Lake interim plan, with the pumping fee rising from $20 to $35 per acre-foot on adoption

• California Water Commission — the CEQA suspension for temporary permits and the Water Code 1242.1 local-plan waiver both lapsed with prior executive orders

• San Luis & Delta-Mendota Water Authority — O'Neill recommissioning September 23 to 24 leaves 400 to 500 CFS for canal demands

• Westlands Water District — engineer's report approved for a proposed maximum assessment of $83.68 per irrigable acre, Prop 218 hearing December 15

• Fillmore and Piru Basins GSA — no detectable permanent subsidence in either basin, comments on the draft criteria close September 25

Plus trends across the valley: El Niño preparation, subsidence as the compliance test that decides everything else, Proposition 4 funding timing, vineyard contraction showing up in water agency planning, and consolidation fights at three agencies.

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State Water Board staff have proposed an interim plan for the Tule Subbasin whose first phase would halt pumping on every acre within at least two miles of the Friant-Kern Canal — and the agencies that would live under it have about seven weeks to put a local alternative in front of the Friant Water Authority. In Kings County, a judge told growers they're likely to win on the merits, then applied the pay-first rule and left the fees in place, with one carve-out that changes things for two GSAs. And DWR's latest position analysis has San Luis Reservoir filling early enough that 2026 carryover is at risk the moment the calendar turns.

Also this week: the Modesto Sub-Basin's refined sustainable yield comes in 32,000 acre-feet below the number growers are currently allocated against, Napa County groundwater fee rates fall about 55%, Friant pulls its canal down ahead of schedule, and the evapotranspiration option takes its first board vote on the way out.

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WaterOne.ai (Mizu Analytics, Inc.) strives to provide timely, accurate, and reliable coverage of water, agriculture, and related issues. However, no guarantee is made as to the accuracy, completeness, or timeliness of the information presented. All content is provided for general informational purposes only and should not be relied upon as legal, financial, or professional advice. Users are solely responsible for any actions taken based on the information provided, and WaterOne disclaims all liability for errors, omissions, or outcomes resulting from the use of this site. The opinions expressed are those of the authors.

Greater Kaweah wants to buy the water leaking out of district canals and use it to retire the Tier 1/Tier 2 overdraft allocation — this week we hear how that concept is landing at Lakeside Irrigation District and Kaweah Delta WCD. A newly protected toad has stalled a FEMA-funded flood barrier as forecasters warn of a possible Super El Niño, McMullin Area GSA awards its $22.8 million flood-capture expansion, and four heavyweight commenters weigh in on the Delta-Mendota GSP with just a third of a foot of subsidence allowance left. In Trends: groundwater markets take their first exchange requests, collections and penalties tighten across the valley, roughly $740 million in Prop 4 grant programs comes into view, and DWR clears several basins while a new court ruling reshapes GSP litigation.

Read the full recaps at waterone.ai | Try Chat GSA for instant answers about your district

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AI can make mistakes. Check important info.

WaterOne.ai (Mizu Analytics, Inc.) strives to provide timely, accurate, and reliable coverage of water, agriculture, and related issues. However, no guarantee is made as to the accuracy, completeness, or timeliness of the information presented. All content is provided for general informational purposes only and should not be relied upon as legal, financial, or professional advice. Users are solely responsible for any actions taken based on the information provided, and WaterOne disclaims all liability for errors, omissions, or outcomes resulting from the use of this site. The opinions expressed are those of the authors.

The pumping restriction taking shape along the Friant-Kern Canal isn't theoretical anymore — one Tule subbasin board member already has 4,500 acres out of production. This week: DWR tells the California Water Commission that every supply project together still won't close the valley's gap; a $730,000 small-farm fallowing fund near Paso Robles has fewer than 10 applicants; Metropolitan rereads the Palo Verde fallowing agreement and January planting gets complicated; Porterville ID GSA adopts its $50.67-per-acre extraction fee. Plus: the five-year GSP reviews where DWR's corrective actions actually bite, Friday's Colorado River Record of Decision, interconnected surface water as the state's recurring red pen, and districts quietly moving idle cash into higher yields.

Full recaps of every board meeting we cover: https://gsa.waterone.ai — and try ChatGSA to ask anything about your district.

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The strongest El Niño since tracking began may be forming — and Central Valley districts are telling growers to get fields ready before the first storm. Plus: Greater Kaweah's concept to stop allocating "paper water," State Water Board extraction invoices land with a 30-day clock (and a petition playbook if you were billed for banked water), a $200 million cost break moves the B.F. Sisk Dam raise forward, and the Tule moratorium timeline may be speeding up.

Read the full recaps at waterone.ai | Try Chat GSA for instant answers about your district

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AI can make mistakes. Check important info.

WaterOne.ai (Mizu Analytics, Inc.) strives to provide timely, accurate, and reliable coverage of water, agriculture, and related issues. However, no guarantee is made as to the accuracy, completeness, or timeliness of the information presented. All content is provided for general informational purposes only and should not be relied upon as legal, financial, or professional advice. Users are solely responsible for any actions taken based on the information provided, and WaterOne disclaims all liability for errors, omissions, or outcomes resulting from the use of this site. The opinions expressed are those of the authors.

The state's opening offer for one stretch of the Tule Subbasin was zero pumping. Plus: a Tehama County fee ruling starts landing on Sacramento Valley boards, a $25 million federal banking award with a September deadline, golden mussels at O'Neill, and what the Colorado River's final EIS actually says. Full recaps at WaterOne.ai.

Pleasant Valley GSA adopted a $50-per-acre-foot extraction fee after a majority-protest hearing drew just 28 protests out of 333 possible votes — while a California appeals court struck down a neighboring county's groundwater charge as an unconstitutional tax, for the precise reason that it was not tied to pumping at all. We walk through what separates a fee that survives from one that doesn't, ahead of a fall full of Prop 218 and Prop 26 hearings. Also this week: why a $525 acre-foot of transfer water arrives in a San Benito field costing closer to $1,000; the Salinas Valley advisory committee that couldn't agree on a seawater project, and the modeling showing even zero pumping in the pressure zone won't stop the ocean; and the State Water Board's Tule Subbasin framework floating a pumping moratorium along the Friant-Kern Canal — which Mid Kings was told would apply just as readily to Tulare Lake. Read the full recaps at waterone.ai | Try Chat GSA for instant answers about your district

Groundwater charges are moving off agency invoices and onto county property tax bills in three basins at once — and when a fee is secured against the land instead of sent as an invoice, the leverage changes. Delta-Mendota reported it has roughly four inches of subsidence allowance left before its 2040 threshold, a cushion meant to last until 2040 that it's on pace to spend by 2028. Plus: metering enforcement moves from deadlines to penalties, Vina's advisory committee votes to pull regulatory triggers earlier in 16 of 25 monitoring wells, and Westlands argues Shasta inflows justify more than a 25% allocation.

Read the full recaps at waterone.ai | Try Chat GSA for instant answers about your district

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AI can make mistakes. Check important info.

WaterOne.ai (Mizu Analytics, Inc.) strives to provide timely, accurate, and reliable coverage of water, agriculture, and related issues. However, no guarantee is made as to the accuracy, completeness, or timeliness of the information presented. All content is provided for general informational purposes only and should not be relied upon as legal, financial, or professional advice. Users are solely responsible for any actions taken based on the information provided, and WaterOne disclaims all liability for errors, omissions, or outcomes resulting from the use of this site. The opinions expressed are those of the authors.

South Fork Kings GSA makes what its board calls its most important hire yet — an independent watchdog for the groundwater model that sets allocations — while warning that a failed funding vote could put the state in charge. Plus: the City of Tulare's wells are digging a hole that gets worse rain or shine, the Friant system's golden mussel bill comes into focus, and Chowchilla's rock-filled recharge holes are outperforming ponds ten to one.

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Pixley's subsidence warning lights doubled in a single year — just days before State Water Board leadership sits down with Tule Subbasin GSAs in Visalia to lay out its interim plan roadmap. Meanwhile, the Modesto Subbasin's east side edges toward "undesirable results" territory with 30%+ pumping cuts on the table, more agencies max out their fees, and a proposed data center that could out-drink an entire water district has boards asking whether they're even allowed to say no. Read the full recaps at waterone.ai | Try Chat GSA for instant answers about your district --- AI can make mistakes. Check important info. WaterOne.ai (Mizu Analytics, Inc.) strives to provide timely, accurate, and reliable coverage of water, agriculture, and related issues. However, no guarantee is made as to the accuracy, completeness, or timeliness of the information presented. All content is provided for general informational purposes only and should not be relied upon as legal, financial, or professional advice. Users are solely responsible for any actions taken based on the information provided, and WaterOne disclaims all liability for errors, omissions, or outcomes resulting from the use of this site. The opinions expressed are those of the authors.