Welcome to the Tri-Dam Project

Tri-Dam Project is a partnership between the Oakdale Irrigation District and the South San Joaquin Irrigation District. Together they developed, operate and maintain the Beardsley, Donnells and Tulloch projects including the dams, tunnels, penstocks, power houses, communications systems, and general offices. These facilities are located on the Middle Fork of the Stanislaus River in Tuolumne County, California.

The "Upper Works" include Donnells and Beardsley dams, reservoirs, power houses and appurtenant facilities. The "Lower Works" refer to the Tulloch development below Jamestown reaching into both Calaveras and Tuolumne Counties.

Tri-Dam Project is governed by a joint board of directors composed of the five member boards of the two Districts. The day to day activities of Tri-Dam Project and Tri-Dam Power Authority are managed by a General Manager who reports to the board. The administrative offices of Tri-Dam Project are located in Strawberry, California.

Dam Good Photos Beardsley DamDonnells DamTulloch Dam

Weekly Update, for week ending March 20, 2015

No new conditions beyond those presented on March 7, 2015. The 2015 Fill Schedule from the Bureau of Reclamation has been received and is posted below. Conditions along the Stanislaus River Basin remain very dire, with the effects of the fourth dry year and prolonged drought presenting extreme challenges in light of continuing release flows. No additional rain has fallen, and no significant rain is predicted in the near future, thus Tri-Dam continues to be very concerned about reservoir levels during the coming months.

For immediate release - March 11, 2015

Letter From Congressman Jeff Denham and Congressman Tom McClintock to US Fish & Wildlife, US Bureau of Reclamation and National Oceanic & Atmospheric Administration, addressing New Melones operations and flows.

Power Point presentation from Saturday March 7th, 2015 public meeting

Summary of March 7, 2015 meeting.

As noted during the meeting, Tri-Dam will post weekly updates on this page each Friday, beginning this Friday March 13, 2015. As noted during the meeting, it is important that all interested persons check the website regularly as Tri-Dam will post updates should conditions change, and a drawdown below scheduled operating levels become necessary.

In the event that you have questions, please feel free to contact:
Ms. Susan Larson, slarson@tridamproject.com (209) 785-3838 or
Mr. Ron Berry, rberry@tridamproject.com (209) 965-3996.

Special Notes:

The Tulloch Spring 2015 Fill Schedule is available on the Tulloch page.
Information about the Tulloch Reservoir Shoreline Management Plan is available on the Tulloch page.

Save the Stan
Visit www.savethestan.org

Data for March 26
Click below for historical data

Elevation (feet above sea level)
3,285.54 Beardsley
4,807.46 Donnells
501.61 Tulloch
Storage (acre feet)
30,986 Beardsley
24,406 Donnells
57,060 Tulloch
Outflow (cubic feet/sec)
56 Beardsley
36 Donnells
1,502 Tulloch
Road Conditions
Current road conditions to Beardsley and Donnells Reservoirs can be found on their respective pages.