Tri-Dam Project

A partnership of the Oakdale and South San Joaquin Irrigation Districts

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April 12, 2015

HDR Power Point Presentation from Meeting of April 11, 2015

Download PowerPoint Presentation (PDF).

Article by Tri-Dam Project / Tulloch Reservoir

Water Data

Data For 03/27/2023

Elevation (feet above sea level)

Donnells 4,768.13

Beardsley 3,368.97

Tulloch 500.62

Storage (acre feet)

Donnells 12,944

Beardsley 78,476

Tulloch 55,975

Outflow (cubic feet/sec)

Donnells 43

Beardsley * 668

Tulloch 1,506


*Spilling

View historical data

News & Updates

Tulloch Spring 2023 Fill Schedule

March 24, 2023 by Tri-Dam Project

Tulloch Winter 2022/2023 Drawdown Schedule

September 8, 2022 by Tri-Dam Project

Road Conditions

Current road conditions to Beardsley and Donnells Reservoirs can be found on their respective pages.

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