Hetch Hetchy Water and Power

Reservoir and Powerhouse Planned Releases

November 19 2018

 

Reservoir Releases*

Reservoir

Elevation (ft)

Storage (TAF)

Planned Releases (cfs)

Special Conditions

Hetch Hetchy

3754.5

263.9

60

 

Cherry

4671.5

219.9

5

 

Eleanor

4647.3

14.6

5

No spill at Eleanor is expected during storm

 

Powerhouse Releases**

Powerhouse

Planned Tuolumne Releases (cfs)

Special Conditions

Kirkwood

0

No spill at KPH.

Holm

250 cfs

~250 cfs scheduled starting 10AM on Wednesday, November 21. We expect this to continue for 1-2 weeks.

Moccasin***

0

250-350

Spill at Moccasin Reservoir scheduled from 2AM on Wednesday, November 21 through 9PM on Saturday, November 24. Spill will vary, but can be as high as 350 cfs.

 

 

* Reservoir releases are dependent on storage and weather conditions, and can be changed at any time.

** Powerhouse releases can vary significantly dependent on power load and operational constraints. Planned releases are estimates.

*** Moccasin releases seen at Moccasin Creek between town of Moccasin and Don Pedro Reservoir. These releases do not affect Tuolumne River conditions, but do impact recreation in Moccasin Creek.