California Reservoir Project at Risk of Forfeiting $171 Million in State Funding

The Temperance Flat Reservoir Project might be falling too far behind schedule to maintain a huge chunk of state funding, according to reports.

2 minute read

November 5, 2020, 11:00 AM PST

By James Brasuell @CasualBrasuell


Friant Dam

Millerton Lake and Friant Dam on the San Joaquin River in California. | ZeusOfCoarsegold / Shutterstock

The more than $171 million the Temperance Flat Reservoir Project received in 2018 from the state of California's Water Storage Investment Program came with a few strings attached. On January 22, the project would be required to have "completed feasibility studies, a draft version of the environmental documents released for public review, and commitments for at least 75% of non-program funding," according to an article by Chris Austin (commonly known as Maven).

"Each quarter, applicants submit a report informing the Commission of project status as it relates to the Prop 1 requirements.  In recent quarterly reports, the Temperance Flat Reservoir Authority has indicated that it is evaluating its ability to achieve the prescribed schedule," reports Maven.

The entire project will require more than $3 billion to essentially add a dam to an existing reservoir—Millerton Lake, which is created by Friant Dam on the San Joaquin River. "The basic facility would be a new dam in Millerton Lake and a new powerhouse that would generate hydropower as water is released from Temperance Flat into Millerton Lake, essentially impounding water upstream to the downstream face of Kerckhoff Dam, a PG&E power facility," according to Maven. The project would provide a total of 1.8 million acre-feet of water storage capacity when combined with Millerton Lake.

In typical Maven style, the article provides nearly comprehensive detail of the planning and construction details of the project, as well as a path forward for the project to stay on schedule.

Thursday, November 5, 2020 in Maven's Notebook

Young Professional

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban and Environmental Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

October 28, 2026 - Zachary Whalen

A car drives through a puddle, making a large splash. Rain pours down.

California plans to bury El Niño’s downpour

If the state plays its cards right, it may be able to store a billion acre-feet of El Niño’s water in aquifers.

October 28, 2026 - Grist

Lake Powell with much of the water evaporated.

Desperate measures: Advocates weigh draining Lake Powell to fill Colorado River

Draining the reservoir could reduce evaporation losses by a couple hundred thousand acre-feet.

October 30, 2026 - Yale Environment 360

the New Mexico State capital building, made of orange clay

‘Hoodwinked:’ New Mexico bill aimed at microgrids paves way for data center development

In an interview with High Country News, Padilla said the legislation “ignited” New Mexico's economy.

3 seconds ago - High Country News

Governor Gavin Newsom speaking at a Gun Safety Legislation Press Conference.

California’s ‘unrecognizable’ water plan may go down the drain

After four years of regulatory processes, water agencies say the plan to overhaul how cities and farms take water from the Sacramento-San Joaquin Delta has changed dramatically.

1 hour ago - Cal Matters

The Chicago Avenue Bridge when it was open, a dark red bridge in front of downtown.

Chicago Avenue bridge construction delays enrages city leaders

The bridge has been closed since 2025. The city originally aimed to re-open it in December, and now expects to finish construction in 2027.

November 1 - Block Club Chicago