Tri-Dam Project

A partnership of the Oakdale and South San Joaquin Irrigation Districts

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.

From Through Low High
9/16/2016 9/22/2016 506.0 509.0
9/23/2016 9/29/2016 504.7 507.7
9/30/2016 10/6/2016 503.5 506.5
10/7/2016 10/13/2016 502.2 505.2
10/14/2016 10/20/2016 500.9 503.9
10/21/2016 10/27/2016 499.5 502.5
10/28/2016 3/20/2017 498.6 501.6

 

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.

From Through Low High
3/21/2016 4/5/2016 498.6 502
4/6/2016 4/12/2016 499 503
4/13/2016 4/19/2016 500 504
4/20/2016 4/26/2016 501 505
4/27/2016 5/3/2016 502 506
5/4/2016 5/10/2016 503 507
5/11/2016 5/17/2016 504 508
5/18/2016 5/25/2016 505 509
5/26/2016 9/15/2016 506.5 509.5

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.

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.

DATES ELEVATION RANGE
From Through From To
9/23/2015 9/24/2015 499.0 502.0
9/25/2015 9/26/2015 498.0 501.0

Tulloch Reservoir Update – September 14, 2015

Tri-Dam has just received the following updated information from the US Bureau of Reclamation (Bureau).  It is important to note again that the Bureau has decided that this year’s drawdown schedule will be prepared in weekly increments, as they continue to monitor temperatures along the river system.  Tri-Dam will continue to send out these schedules immediately upon receipt.  In the event that conditions along the river system allow the Bureau to produce a longer length schedule, Tri-Dam will send that out immediately as well.  Continue to check our website at www.tridamproject.com

The drawdown schedule for Tulloch Reservoir is shown below for September 15-23, 2015 .   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.

DATES ELEVATION RANGE
From Through From To
9/15/2015 9/17/2015 503.0 506.0
9/18/2015 9/19/2015 502.0 505.0
9/20/2015 9/21/2015 501.0 504.0
9/22/2015 9/23/2015 500.0 503.0