Dreamflows Tuolumne - Holm Powerhouse Release Schedule
 
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River Flow Below Holm Powerhouse

In the tables that follow, each date is color-coded according to the kind of release scheduled for that day:
ColorMeaning
  No scheduled release planned for this day. 
  Scheduled release: 1100 cfs total estimated releases from the HHWP project from 7am to 11am. 
Note: All information provided by Hetch Hetchy Water and Power.
Note: In the tables that follow, the release times (7am to 11am) are from Holm Powerhouse, however the projected minimum flows (1100 cfs) are at Meral's Pool.  Since the Tuolumne and sidestreams also contribute flow, the releases from Holm Powerhouse will always be somewhat less than the scheduled flow at Meral's Pool.
Note: Things can change, especially during snowmelt.  See the current Dreamflows Bulletin Board thread as well as links on the flow reports for late-breaking news.

 
June 2013
SunMonTueWedThuFriSat
             1   1100 cfs
 7am - 11am 
 2   1100 cfs
 7am - 11am 
 3   1100 cfs
 7am - 11am 
 4   1100 cfs
 7am - 11am 
 5
 
 6   1100 cfs
 7am - 11am 
 7   1100 cfs
 7am - 11am 
 8   1100 cfs
 7am - 11am 
 9   1100 cfs
 7am - 11am 
 10   1100 cfs
 7am - 11am 
 11   1100 cfs
 7am - 11am 
 12   1100 cfs
 7am - 11am 
 13   1100 cfs
 7am - 11am 
 14   1100 cfs
 7am - 11am 
 15   1100 cfs
 7am - 11am 
 16   1100 cfs
 7am - 11am 
 17   1100 cfs
 7am - 11am 
 18   1100 cfs
 7am - 11am 
 19
 
 20   1100 cfs
 7am - 11am 
 21   1100 cfs
 7am - 11am 
 22   1100 cfs
 7am - 11am 
 23   1100 cfs
 7am - 11am 
 24   1100 cfs
 7am - 11am 
 25   1100 cfs
 7am - 11am 
 26   1100 cfs
 7am - 11am 
 27   1100 cfs
 7am - 11am 
 28   1100 cfs
 7am - 11am 
 29   1100 cfs
 7am - 11am 
 30   1100 cfs
 7am - 11am 
           

 
July 2013
SunMonTueWedThuFriSat
   1   1100 cfs
 7am - 11am 
 2   1100 cfs
 7am - 11am 
 3
 
 4   1100 cfs
 7am - 11am 
 5   1100 cfs
 7am - 11am 
 6   1100 cfs
 7am - 11am 
 7   1100 cfs
 7am - 11am 
 8   1100 cfs
 7am - 11am 
 9   1100 cfs
 7am - 11am 
 10   1100 cfs
 7am - 11am 
 11   1100 cfs
 7am - 11am 
 12   1100 cfs
 7am - 11am 
 13   1100 cfs
 7am - 11am 
 14   1100 cfs
 7am - 11am 
 15   1100 cfs
 7am - 11am 
 16   1100 cfs
 7am - 11am 
 17
 
 18   1100 cfs
 7am - 11am 
 19   1100 cfs
 7am - 11am 
 20   1100 cfs
 7am - 11am 
 21   1100 cfs
 7am - 11am 
 22   1100 cfs
 7am - 11am 
 23   1100 cfs
 7am - 11am 
 24   1100 cfs
 7am - 11am 
 25   1100 cfs
 7am - 11am 
 26   1100 cfs
 7am - 11am 
 27   1100 cfs
 7am - 11am 
 28   1100 cfs
 7am - 11am 
 29   1100 cfs
 7am - 11am 
 30   1100 cfs
 7am - 11am 
 31
 
     

 
August 2013
SunMonTueWedThuFriSat
         1   1100 cfs
 7am - 11am 
 2   1100 cfs
 7am - 11am 
 3   1100 cfs
 7am - 11am 
 4   1100 cfs
 7am - 11am 
 5   1100 cfs
 7am - 11am 
 6   1100 cfs
 7am - 11am 
 7   1100 cfs
 7am - 11am 
 8   1100 cfs
 7am - 11am 
 9   1100 cfs
 7am - 11am 
 10   1100 cfs
 7am - 11am 
 11   1100 cfs
 7am - 11am 
 12   1100 cfs
 7am - 11am 
 13   1100 cfs
 7am - 11am 
 14
 
 15   1100 cfs
 7am - 11am 
 16   1100 cfs
 7am - 11am 
 17   1100 cfs
 7am - 11am 
 18   1100 cfs
 7am - 11am 
 19   1100 cfs
 7am - 11am 
 20   1100 cfs
 7am - 11am 
 21   1100 cfs
 7am - 11am 
 22   1100 cfs
 7am - 11am 
 23   1100 cfs
 7am - 11am 
 24   1100 cfs
 7am - 11am 
 25   1100 cfs
 7am - 11am 
 26   1100 cfs
 7am - 11am 
 27   1100 cfs
 7am - 11am 
 28
 
 29   1100 cfs
 7am - 11am 
 30   1100 cfs
 7am - 11am 
 31   1100 cfs
 7am - 11am 

 
September 2013
SunMonTueWedThuFriSat
 1   1100 cfs
 7am - 11am 
 2   1100 cfs
 7am - 11am 
 3
 
 4
 
 5
 
 6
 
 7
 
 8
 
 9
 
 10
 
 11
 
 12
 
 13
 
 14
 
 15
 
 16
 
 17
 
 18
 
 19
 
 20
 
 21
 
 22
 
 23
 
 24
 
 25
 
 26
 
 27
 
 28
 
 29
 
 30
 
         

Water Management Issues:

1.  Times reflect releases at Holm PH, and it is assumed that it takes approximately two hours for the water to travel from Holm to the Lumsden/Meral's Pool launch point.  Project flow (i.e. flow at Meral's Pool) is a combination of release from Holm and other streamflow releases.

2.  This is a relatively low-water year, so the "other streamflows releases" referred to in the previous item aren't expected to be huge, but they may nevertheless be significant, especially during May and early June.  Before heading out, be sure to check the relevant Dreamflows flow report and Bulletin Board thread to determine current and expected release trends.

3.  Users should be aware that sudden changes in powerhouse or dam releases may occur at any time due to emergency mechanical or electrical conditions.  Scheduled or unplanned rapid changes in water levels and flow rates can create hazards, and users are urged to use caution and to wear all appropriate personal protective equipment.