Good afternoon,

 

A couple of clarifications to today’s earlier messaging below, pertaining to timing of Holm Powerhouse releases.

 

Updates to planned HHWP releases for the coming week.

Note: HPH outage planned for May 25-26. Details below.

 

Cherry Reservoir

• Valve releases at approximately 7 cfs
• Holm Powerhouse will cycle between approximately 50-950 cfs
• Flows ~950 cfs 6 PM – 8 7 AM
• Flows ~450 cfs 7 AM - 9AM
• Flows ~50-150 cfs 9 AM - 5 PM
• Flows ~450 cfs 5 PM-6 PM
• POWERHOUSE OUTAGE:
• Holm will be out of service from May 25 at 12:00 (noon) through May 26 at 24:00
• Generation will resume on May 27
• RECREATIONAL RELEASES:
• Recreational releases to begin on May 27
• ~950 cfs releases 7am-11am
• First “No Water Wednesday will occur on June 1

 

Hetch Hetchy Reservoir

• Valve releases remain elevated after last week’s Upper Tuolumne River Ecosystem Program release
• Flows below O’Shaughnessy will be in the 1,000-1,300 cfs range for the coming week
• If significant reductions to releases become necessary, additional notice will be provided as soon as possible
• Kirkwood Powerhouse spill will range between 0-500 cfs
• Flows ~500 cfs 5 PM - 10 AM
• Flows 0 cfs 10 AM - 5 PM

 

Lake Eleanor

• Full and spilling approximately 150 cfs
• Eleanor stream release is expected to fluctuate between 50-200 cfs for the coming week

 

 

All stated flows are best estimates and may be subject to change as operational constraints or needs arise.