Tri-Dam Project

A partnership of the Oakdale and South San Joaquin Irrigation Districts

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January 6, 2017

Special Notice for Storm Events

In the interest of utmost safety during the upcoming storm event(s), this notification is to advise you of a possible slight modification to the reservoir levels at Tulloch during these periods of significant rain/snow. Tri-Dam is working, along with the US Bureau of Reclamation to safely manage the reservoir levels and storm runoff, holding and releasing waters as necessary to ensure the safety of all persons along the Stanislaus River system including upcountry and downstream users. The current 2016 fall reservoir schedule for this year, as provided by prior notice is as follows:

FromThroughLowHigh
9/16/20169/22/2016506.0509.0
9/23/20169/29/2016504.7507.7
9/30/201610/6/2016503.5506.5
10/7/201610/13/2016502.2505.2
10/14/201610/20/2016500.9503.9
10/21/201610/27/2016499.5502.5
10/28/20163/20/2017498.6501.6

The reservoir is currently being operated within the range, as highlighted above 498.6’ to 501.6’. In conjunction with the US Bureau of Reclamation, Tri-Dam is planning to operate Tulloch Reservoir within this range, however, this advisory is being sent to advise you that, in the interest of extreme caution, it may be necessary to operate the reservoir as low as 498.0 feet in order to provide additional water storage space over the next two weeks. The purpose of the adjustment is to use the reservoir to store additional water, if needed and allow Tri-Dam to make metered downstream releases, as needed to prevent and/or minimize downstream flooding.

As always, even when the reservoir is managed within the ranges noted, actual elevations may vary temporarily due to inflow to Tulloch Reservoir during rain events, or unforeseen operational constraints. Residents and others operating in and around the reservoir should exercise care at all times.

In the event that you have any questions, please feel free to contact me.

Susan Larson
License Compliance Coordinator
Tri-Dam Project
PO Box 1158
Pinecrest, CA 95364
(209) 785-3838
slarson@tridamproject.com

Filed Under: Tulloch Reservoir

September 7, 2016

Tulloch Fall 2016 Draw Down Schedule

Shown below is the fall/winter schedule for Tulloch Reservoir, as received from the US Bureau of Reclamation. The schedule complies with US Army Corps of Engineers flood control requirements, and elevations are projected to fall within the ranges noted below. Note that the reservoir will be managed within the ranges noted below, but the actual elevations may vary temporarily due to inflow to Tulloch Reservoir during rain events, or unforeseen operational constraints. Residents and others operating in and around the reservoir should exercise care at all times.

FromThroughLowHigh
9/16/20169/22/2016506.0509.0
9/23/20169/29/2016504.7507.7
9/30/201610/6/2016503.5506.5
10/7/201610/13/2016502.2505.2
10/14/201610/20/2016500.9503.9
10/21/201610/27/2016499.5502.5
10/28/20163/20/2017498.6501.6

 

Filed Under: Fill Schedule, Tulloch Reservoir

March 10, 2016

Tulloch Spring 2016 Fill Schedule

Below is the spring fill schedule for Tulloch Reservoir, as received from the US Bureau of Reclamation. The schedule complies with US Army Corps of Engineers flood control constraints, and elevations are projected to fall within the ranges noted below. Note that actual elevations may vary temporarily due to inflow to Tulloch Reservoir during rain events, or unforeseen operational constraints. Residents and others operating in and around the reservoir should exercise care at all times.

FromThroughLowHigh
3/21/20164/5/2016498.6502
4/6/20164/12/2016499503
4/13/20164/19/2016500504
4/20/20164/26/2016501505
4/27/20165/3/2016502506
5/4/20165/10/2016503507
5/11/20165/17/2016504508
5/18/20165/25/2016505509
5/26/20169/15/2016506.5509.5

Filed Under: Fill Schedule, Tulloch Reservoir

October 8, 2015

Anticipated Final Tulloch Reservoir Schedule

Tri-Dam has received additional updated information from the US Bureau of Reclamation (Bureau).  The Bureau advises that the current reservoir level range is likely to be maintained throughout the winter season as noted during our last update of September 21st, 2015.   Tulloch reservoir is currently being operated within the elevation range of  498′ to 501′, which is the normal winter holding elevation.  It is expected that the reservoir will be held within this range for the remainder of the winter season, until the fill schedule is produced in February/March 2016.  It is important to keep in mind however, that heavy rains and excessive runoff could cause Tulloch to rise above this level, if needed, to manage downstream flooding during heavy rain events.

This week’s update from the Bureau notes that the Bureau does not expect any change in the normal winter holding elevation at Tulloch  as noted above due to decreasing atmospheric temperatures, which are decreasing water temperatures downstream of Tulloch both at Goodwin and Orange Blossom.

Should the regulatory agencies determine that additional drawdown is necessary, Tri-Dam will provide immediate notification.  Although the current schedule is expected to remain in effect, it is important to continue to watch for updates and check the website periodically at www.tridamproject.com.

This schedule complies with U.S. Army Corps of Engineers flood control requirements.  The reservoir will generally be managed to the target elevation ranges, but some variation may occur due to large natural inflows or facility and operational constraints.  As always, please exercise care when operating in and around the reservoir.

Filed Under: Drought Updates, Tulloch Reservoir

September 21, 2015

Tulloch Reservoir Update – September 21, 2015

Anticipated Final Tulloch Reservoir Schedule

Tri-Dam has just received the following updated information from the US Bureau of Reclamation (Bureau).  Please note that the Bureau has prepared this schedule to bring the reservoir to the 498’ to 501’  elevation range by September 26, 2015.  This is the normal winter holding elevation, and it is expected that the reservoir will be held at this elevation through the remainder of the winter season, until the fill schedule is produced in February/March 2016.  Should the regulatory agencies determine that additional drawdown is necessary, Tri-Dam will provide immediate notification.  Although the current schedule is expected to remain in effect, it is important to continue to watch for updates and check the website periodically at www.tridamproject.com

This schedule complies with U.S. Army Corps of Engineers flood control requirements.  The reservoir will generally be managed to the target elevation ranges, but some variation may occur due to large natural inflows or facility and operational constraints.  As always, please exercise care when operating in and around the reservoir.

DATESELEVATION RANGE
FromThroughFromTo
9/23/20159/24/2015499.0502.0
9/25/20159/26/2015498.0501.0

Filed Under: Drought Updates, Tulloch Reservoir

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Water Data

Data For 01/20/2021

Elevation (feet above sea level)

Donnells 4,803.02

Beardsley 3,282.67

Tulloch 482.36

Storage (acre feet)

Donnells 23,012

Beardsley 29,622

Tulloch 38,720

Outflow (cubic feet/sec)

Donnells 28

Beardsley 142

Tulloch 204


*Spilling

View historical data

News & Updates

2021 Tulloch Updates/Information

January 7, 2021 by Tri-Dam Project

Response to Tulloch Landowners Petition

September 22, 2020 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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