Good afternoon,

 

Below are planned releases from HHWP facilities the week of March 11^th.

 

For permitting and access information contact the Groveland Ranger District.

 

We strive to keep the user community updated on projected flows on the Tuolumne River. Flows will continue to vary significantly over the coming weeks as spring runoff season begins

 

Stated flow rates are best estimates and are subject to change as conditions and operational constraints evolve.

 

Hetch Hetchy Reservoir

• Total flows below O’Shaughnessy are being increased incrementally starting today to reach 1000 cfs by Thursday morning to facilitate valve maintenance. Flows will then be decreased incrementally back to 114 cfs by Saturday 3/16.
• Additional releases may be possible pending inflows and operational conditions; notifications to be provided as needed
• Kirkwood Powerhouse

• Starting 3/13 Spill of approximately 400-600 cfs around the clock

 

Cherry Reservoir

• Total flows below Cherry are 7 cfs
• Additional releases may be possible pending inflows and operational conditions; notifications to be provided as needed

• Holm Powerhouse
• Approximate spill is 640-900 cfs
• Cut in releases may be possible pending operational constraints; notifications to be provided as needed
• Holm 1 unit operation 3/18-3/22; spill 0-450 cfs possible

 

Lake Eleanor

• Valve releases of 10+ cfs
• Spill approximately 0-170 cfs
• Total flow below Eleanor approximately 10-180 cfs

 

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Calculated real time flow station for Meral’s Pool:

https://cdec.water.ca.gov/webgis/?appid=cdecstation&sta=TMP

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Any significant changes to the schedule will be posted on the bulletin board.