Tri-Dam Project

A partnership of the Oakdale and South San Joaquin Irrigation Districts

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August 20, 2015

Tulloch Reservoir Update for August 20, 2015

Tri-Dam continues to await the fall/winter draw down schedule from the Bureau of Reclamation (Bureau). During teleconferences this week, the Bureau advises that they have delayed preparation of the actual schedule due to the need to monitor temperatures along the river system below Tulloch. The Bureau does expect to open the low level valve at New Melones no later than Wednesday, August 26, 2015, and release water into Tulloch while monitoring temperatures. This water would be balanced with releases from Tulloch such that there is no anticipated change in water levels at Tulloch during this time period. Given this information, Tri-Dam is optimistic that daily average normal operating levels at Tulloch (506.5’ – 509.5’) could be maintained through September 7, 2015. Please continue to watch this website for the actual schedule, which will be posted here immediately upon it’s receipt from the Bureau.

Article by Greg Falken / Drought Updates, 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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