Tri-Dam Project

A partnership of the Oakdale and South San Joaquin Irrigation Districts

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Archive Documents

On this page you will find documents of historical interest. These are scans of materials from the Tri-Dam Project archives, published in Portable Document Format (PDF).

Archives / Plans Drawings /
TypeDrawer/FiledatesortSize

pdf
1952 Plan1952050857.5k

pdf
Project Construction Report 19591959050835.6M

pdf
Schematic Diagram20080508110.8k

pdf
Stanislaus River Projects2009050895.2k

pdf
Tri Dam Vicinity Map of Project20150701331.8k

About Tri-Dam

  • People
  • Meetings
  • Jobs
  • Surplus Sales
  • Open Solicitations
  • Annual Reports
  • Archive Documents
  • Historic Videos

Water Data

Data For 06/28/2022

Elevation (feet above sea level)

Donnells 4,912.17

Beardsley 3,384.50

Tulloch 507.95

Storage (acre feet)

Donnells 62,718

Beardsley 88,972

Tulloch 64,429

Outflow (cubic feet/sec)

Donnells 43

Beardsley 55

Tulloch 901


*Spilling

View historical data

News & Updates

Tulloch 2022 Internal Guidance Memo—Grandfathered Facilities

April 22, 2022 by Tri-Dam Project

Tulloch Spring 2022 Fill Schedule

March 10, 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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