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Reservoir Storage & Operations:

Water supply information provided by Sonoma Water (find more water storage info here).

Updates on PG&E 2025 Flow Variance, Reducing Water Diversions to the Russian River

No new information this week.

Background & more information:

On August 4, 2025, FERC approved the PG&E 2025 Flow Variance, reducing water diversions to the Russian River basin. More information here.

The State Water Resources Control Board has developed a tool for water right holders, linked below. At the September 3, 2025 State Water Board meeting, staff provided an update on the Water Supply and Demand Assessment Program in which the Russian River was discussed throughout.

State Water Resources Control Board Supply and Demand Assessment tool for the Russian River

PG&E’s Final Surrender Application for Potter Valley Project

RRFC webpage on the Future of the Eel River to Russian River Diversion

PPIC 2025 Annual Water Conference, Nov. 13, in Sacramento

The Public Policy Institute of California (PPIC) will host its 2025 Annual Water Conference in Sacramento on Thursday, Nov. 13. “California Water and a Changing Federal Partnership” will explore how California must adapt to its evolving relationship with the new federal administration. For decades, the federal government has been a key partner in California’s water management efforts. The nature and tone of the federal role, however, fluctuate significantly between administrations, with the current administration pursuing a strategy different than its predecessor’s. Join DWR Lead Deputy Director Thomas Gibson and other water experts as they share their thoughts to envision a way forward. This in-person event is free to attend and will be livestreamed. To attend in person, registration is required as space is limited.

Updates from Dept of Water Resources

• New Reports Show Progress in Community Actions to Make Groundwater Sustainability a Reality in California 10/20/25
• DWR Highlights Key Actions to Prepare for Flooding, Extreme Weather During Flood Preparedness Week, 10/29/25

📢 UPDATED - State Water Board Announces New Water Rights Reporting System

Want to know more about the new water rights reporting system? Check out this article:

Brownstein Alert: Going with the Flow: The Switch from eWRIMS to CalWATRS 10/10/25

For the latest updates, visit the CalWATRS webpage.

CalWATRS on agenda for State Water Board meeting, Oct. 21

The CalWATRS agenda item at the State Water Resources Control Board (State Water Board) public meeting held on Oct. 7 has been rescheduled to Tuesday, Oct. 21. CalWATRS, short for California Water Accounting, Tracking, and Reporting System, is the State's new-and-improved water rights data system, replacing the legacy eWRIMS platform. With CalWATRS, water right holders will have a streamlined way to view all their water right records, file annual reports, and request water rights services. In addition to the CalWATRS informational item at the public meeting on Oct. 21, upcoming CalWATRS events will be posted on the CalWATRS webpage as they are scheduled. CalWATRS successfully launched on Oct. 7, as planned. Learn more about CalWATRS at the CalWATRS Virtual Public Workshop, Tuesday, Oct. 28, at 1 p.m

In the press:

• CA Water Plan eNews 10/15/25
• Maven's Notebook Weekly edition 10/13-10/17/25
• Maven's Notebook Weekend Edition: 10/19/25

• PPIC: How to Protect Ecosystems That Need Groundwater 10/13/25
• CNN: The planet has entered a ‘new reality’ as it hits its first climate tipping point, landmark report finds 10/13/25
• Union of Concerned Scientists: Ask a Scientist: How Do We Solve California’s Water Shortage Crisis? 10/16/25
• LAO - CA Legislature’s Nonpartisan Fiscal and Policy Advisor: The 2025-26 California Spending Plan: Proposition 4 10/16/25
• Marin Independent: Marin Municipal Water District secures water agreement with Sonoma County agency, 10/16/25
• PPIC: Keeping Water Affordable in California, 10/20/25