California Water Digest — 2026-07-13

19 item(s) from 8 source(s); 13 flagged (🔔) for your blog keywords.

📰 News & Policy

🔔 DAILY DIGEST, weekend edition: Pacific Ocean sets a 177-year record for June warmth; Environmental DNA monitoring protects fish hatchery from invasive species; Podcast: Mark Arax on California’s extraction ethos; Dry winter leaves farmers along Colorado River facing greater water shortages; and more …

Maven’s Notebook — Sun, 12 Jul 2026 16:00:16 +0000

[cmtoctableofcontents] Several news sources featured in the Daily Digest may limit the number of articles you can access without a subscription. However, gift articles and open-access links are provided when available. For more open access California water news articles, explore the main page at MavensNotebook.com. In California water news this weekend … The Pacific off California set a 177-year r…

🔔 The AI Boom Is Prolonging Indiana’s Fossil Fuel Era, With Hidden Costs for Water

Circle of Blue — Sun, 12 Jul 2026 10:00:00 +0000

Reading Summary: The AI Boom Is Prolonging Indiana’s Fossil Fuel Era

Circle of Blue | 2026

Key Facts

Amazon has invested ~$29 billion in Northwest Indiana, building three data center campuses across 2,200 acres, marketed as a “Silicon heartland”
Two new natural gas-fired turbines built next to the R.M. Schahfer Generating Station (Wheatfield, IN) are estimated to consume ~6–7 billion gallons annually from the Kankakee River
Schahfer — originally slated to close end of 2025 — has been kept open indefinitely via 90-day federal extension orders to supply data centers
86% of 107 private wells sampled near Schahfer (2010–2019) showed at least one pollutant exceeding federal advisory levels, including cobalt, arsenic, and radium
By 2040, data centers alone are projected to account for more than one-fifth of Indiana’s total energy demand

Who Is Affected

Wheatfield residents (pop. ~900, Jasper County), many relying on shallow private wells as sole drinking water source
Kankakee River ecosystem, facing multi-billion-gallon annual withdrawals
Northwest Indiana communities, already identified as a statewide cancer hotspot (lung, colon, breast)
Indiana’s primary utility (unnamed), granted novel authority to generate power exclusively for data centers
Amazon, as the primary private actor driving infrastructure buildout

Policy/Legal Angle

Federal extension orders (Trump administration) blocking Schahfer’s retirement and directing state energy policy toward coal preservation for data centers
Indiana state regulators granted utility first-of-its-kind authority to generate energy solely for data centers — a significant regulatory precedent
Coal ash disclosure law (unnamed) required Schahfer to publish groundwater contamination data — the mechanism by which residents learned of the pollution
EarthJustice Ash Tracker flagging contamination at 86% of tested wells — suggests ongoing federal coal ash rule enforcement gaps
Indiana state energy policy rewritten under Trump directives to prioritize data center power supply over plant retirement timelines

Blog Angles

The Kankakee River as a Canary: With 6–7 billion gallons/year in projected withdrawals from a single industrial complex, what does this mean for downstream water availability and ecosystems in the Great Lakes basin? How does Indiana’s water rights framework handle consumptive use at this scale — and could California face analogous pressure on the Sacramento or San Joaquin systems if data center buildout accelerates here?
Coal Ash + New Infrastructure = Compounding Contamination Risk: Schahfer’s groundwater contamination is unresolved, yet new gas plants are being added to the same footprint. What legal mechanisms exist (or don’t) to require cleanup before new industrial water users are permitted? This raises direct parallels to California debates over legacy contamination near proposed water infrastructure.
Regulatory Capture via Data Center Policy: Indiana regulators created a new utility authorization category specifically to serve Amazon. What does it mean when energy and water permitting frameworks are reshaped around a single private customer — and is California’s water law resilient enough to resist similar pressure as hyperscale data centers expand into the Central Valley and inland regions?

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Conservation isn’t enough for California’s weather whiplash, we need reliable water - Orange County Register

Google News — CA water — Sun, 12 Jul 2026 12:00:17 GMT

Conservation isn’t enough for California’s weather whiplash, we need reliable water Orange County Register

🔔 HIGH COUNTRY NEWS: Can restoration save the Delta smelt? - Maven’s Notebook

Google News — Bay-Delta — Tue, 07 Jul 2026 15:55:17 GMT

HIGH COUNTRY NEWS: Can restoration save the Delta smelt? Maven’s Notebook

🔔 Tribes came together to secure rights to Colorado River water. Four states are stalling the deal - Utah News Dispatch

Google News — Colorado River — Wed, 08 Jul 2026 11:09:48 GMT

Tribes came together to secure rights to Colorado River water. Four states are stalling the deal Utah News Dispatch

🔔 DWR: Detecting the Delta’s inhabitants through their DNA fingerprint - Maven’s Notebook

Google News — state agencies — Wed, 08 Jul 2026 15:58:08 GMT

DWR: Detecting the Delta’s inhabitants through their DNA fingerprint Maven’s Notebook

USGS: Environmental DNA monitoring protects fish hatchery from invasive species

Maven’s Notebook — Sat, 11 Jul 2026 19:01:43 +0000

By the USGS USGS NOROCK scientists, in collaboration with the U.S. Fish and Wildlife Service, used environmental DNA monitoring in the early detection of invasive New Zealand mudsnails in a fish hatchery, enabling a rapid and successful eradication response. This effort prevented a mudsnail infestation that could have led to long-term operational disruption or permanent facility closure. Backgroun…

🔔 AMENDED NOTICE of hearing to consider modification of California American Water Company cease and desist order (State Water Board orders WR 2016-0016 and WR 2009-0060) - Maven’s Notebook

Google News — CA water — Fri, 10 Jul 2026 15:54:37 GMT

AMENDED NOTICE of hearing to consider modification of California American Water Company cease and desist order (State Water Board orders WR 2016-0016 and WR 2009-0060) Maven’s Notebook

Inside California’s $20 Billion Water Tunnel Decision | Graham Bradner - NTD News

Google News — Bay-Delta — Sat, 11 Jul 2026 16:41:37 GMT

Inside California’s $20 Billion Water Tunnel Decision | Graham Bradner NTD News

🔔 What to know about the golden mussels invading California’s waterways - Sacramento Bee

Google News — state agencies — Sun, 12 Jul 2026 12:00:00 GMT

What to know about the golden mussels invading California’s waterways Sacramento Bee

🔔 UC SANTA CRUZ: UC Santa Cruz team helps California Air Resources Board better understand how wetlands sequester carbon and improve air quality

Maven’s Notebook — Sat, 11 Jul 2026 19:00:49 +0000

Atmosphere-monitoring towers operated by the Paytan Lab will tell the tale of two very different Southern California wetlands over the next two years By Mike Peña, UC Santa Cruz Key takeaways UC Santa Cruz scientists have installed sophisticated monitoring towers at two contrasting wetlands to compare how much carbon dioxide each absorbs versus how much methane they release. These coastal habitats…

Calif. Reliability Program Taps OTC Gas Plants Rather Than Imports - RTO Insider

Google News — state agencies — Sun, 12 Jul 2026 16:05:44 GMT

Calif. Reliability Program Taps OTC Gas Plants Rather Than Imports RTO Insider

🔔 INDIAN WELLS VALLEY: Judge in groundwater adjudication case sharply questions experts for the large pumpers and will appoint a ‘special master’

Maven’s Notebook — Sat, 11 Jul 2026 19:00:21 +0000

Press release from the Indian Wells Valley Groundwater Authority After taking evidence and hearing several days of testimony from expert hydrogeologists and groundwater modelers, the Indian Wells Valley Groundwater Basin Adjudication Court has concluded that it will appoint an independent groundwater expert, called a Special Master, to assist the Court in the review of the complex scientific evide…

Lake Oroville Offers Summer Update - Gridley Herald

Google News — state agencies — Tue, 07 Jul 2026 22:16:04 GMT

Lake Oroville Offers Summer Update Gridley Herald

🔔 PRESS RELEASE: Western United Dairies responds to State Water Board’s revised draft Dairy Order

Maven’s Notebook — Sat, 11 Jul 2026 18:57:58 +0000

Dairy organization participated in the July 8 State Water Board workshop to provide practical feedback on the draft order From Western United Daires Western United Dairies (WUD) today responded to the State Water Resources Control Board’s (State Water Board) release of a revised draft order regarding waste discharge requirements for dairies in the Central Valley. The order is currently scheduled f…

Latest line: A good week for Tom Gibson, a bad week for Ro Khanna - The Mercury News

Google News — state agencies — Sun, 12 Jul 2026 12:22:02 GMT

Latest line: A good week for Tom Gibson, a bad week for Ro Khanna The Mercury News

🔔 SHASTA DAM: State Water Contractors responds to Court’s denial of request for a temporary restraining order

Maven’s Notebook — Sat, 11 Jul 2026 18:50:21 +0000

State Water Contractors applaud decision, which reinforces science-based water management From the State Water Contractors: On Thursday, July 9, the U.S. District Court denied a request for a temporary restraining order that would have restricted the U.S. Bureau of Reclamation’s planned operations of Shasta Dam and reduced releases for the remainder of summer and early fall. The Court found the Bu…

🎓 Research

🔔 Water extinguishes fire, but how does fire affect water? (Part 1 of 2)

CA Water Blog (UC Davis) — Sun, 12 Jul 2026 11:00:00 +0000

Reading Summary: “Water extinguishes fire, but how does fire affect water? (Part 1 of 2)”

Key Facts

The 2024 Park Fire ignited on the edge of Chico and burned 429,000+ acres, following the 2018 Camp Fire (18,000+ structures destroyed) and the 2021 Dixie Fire (largest single-source fire in California history).
The study analyzes three watersheds impacted by the Park Fire: Big Chico Creek, Deer Creek, and Mill Creek, with Battle Creek as a control; Mill Creek watershed sustained the largest burned percentage.
Portions of upper Mill and Deer Creek watersheds had already burned in the 2021 Dixie Fire, creating a compounding burn history.
The first major post-fire rain event (11/20/2024–11/22/2024) produced 4.25 inches over 70 hours; the closest comparable pre-fire event (2/12/2019) produced 3.65 inches over only 37 hours, making direct comparison imperfect.
Big Chico Creek was excluded from streamflow analysis due to lack of active gage data, a notable data gap.

Who Is Affected

Agricultural water users and environmental water users in the Central Valley who rely on supplies sourced from these foothill/mountain watersheds.
City of Chico and nearby foothill communities (including Paradise), directly in the path of fire and runoff impacts.
Davids Engineering clients in the Sacramento Valley dependent on these water supplies.
Downstream ecosystems along Deer Creek, Mill Creek, and Big Chico Creek, which support salmon and other species.

Policy/Legal Angle

No specific laws or court decisions are cited, but several public agency data systems are central to the analysis: USGS stream gages, Cal Fire perimeter data, CIMIS (managed by CA Dept. of Water Resources), and the USGS StreamStats tool.
The article notes a beta-version of StreamStats exists for post-fire runoff analysis for fires from 2023 and earlier — implying regulatory/planning tools are still catching up to fire realities.
Implicit policy relevance: the data gap on Big Chico Creek raises questions about adequacy of stream monitoring infrastructure in fire-prone watersheds.

Blog Angles

The data gap problem: Big Chico Creek had to be excluded entirely due to missing gage data — how many other critical California watersheds lack real-time monitoring, and what does that cost us in post-disaster assessment capability?
Compounding fire effects: Mill and Deer Creeks burned in both the 2021 Dixie Fire and the 2024 Park Fire — does repeated burning amplify runoff changes beyond what single-fire research predicts, and are water managers planning for that?
The cliffhanger question: This Part 1 sets up the key comparison but withholds the streamflow results — the Part 2 data on peak flows and timing differences will be the actionable story for water supply planners and flood managers to watch.

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