Hetch Hetchy Water and Power

Reservoir and Powerhouse Planned Releases

Period of April 4 - 13

Reservoir Releases*

Reservoir

Elevation (ft)

Storage (TAF)

Planned Releases (cfs)

Special Conditions

Hetch Hetchy

3770.2

292.3

100 – 2000

Increased releases for elevation control are required due to storm inflows

Cherry

4614.5

132.1

5

 

Eleanor

4645.5

13.1

5 - 3000

Eleanor spill is forecasted this weekend, up to 3,000 cfs

 

Powerhouse Releases**

Powerhouse

Planned Tuolumne Releases (cfs)

Special Conditions

Kirkwood

500

Spill at KPH

Holm

50-250

250 cfs scheduled during storm event – Friday afternoon through Sunday afternoon

Moccasin***

0-200

Spill at Moccasin Reservoir

 

 

* 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.