Dreamflows Tuolumne - Cherry Creek Confluence Release Schedule
 
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River Flow at the Tuolumne River/Cherry Creek confluence - PROVISIONAL

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 or more total estimated releases from the HHWP project.
NOTE: The following flows are the minimum scheduled releases that you can expect - actual flows may be higher.  See the notes at the bottom of this page.
Note: All information provided by Hetch Hetchy Water and Power.
Note: The following flow schedule is PROVISIONAL and could change.

 

May 2021
SunMonTueWedThuFriSat
            1
 
2
 
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
 
281100 cfs
7am to 11am
291100 cfs
7am to 11am
301100 cfs
7am to 11am
31
 
         

 

June 2021
SunMonTueWedThuFriSat
    11100 cfs
7am to 11am
2
 
31100 cfs
7am to 11am
41100 cfs
7am to 11am
51100 cfs
7am to 11am
61100 cfs
7am to 11am
71100 cfs
7am to 11am
81100 cfs
7am to 11am
91100 cfs
7am to 11am
101100 cfs
7am to 11am
111100 cfs
7am to 11am
121100 cfs
7am to 11am
131100 cfs
7am to 11am
141100 cfs
7am to 11am
151100 cfs
7am to 11am
16
 
171100 cfs
7am to 11am
181100 cfs
7am to 11am
191100 cfs
7am to 11am
201100 cfs
7am to 11am
211100 cfs
7am to 11am
221100 cfs
7am to 11am
231100 cfs
7am to 11am
241100 cfs
7am to 11am
251100 cfs
7am to 11am
261100 cfs
7am to 11am
271100 cfs
7am to 11am
281100 cfs
7am to 11am
291100 cfs
7am to 11am
30
 
     

 

July 2021
SunMonTueWedThuFriSat
        11100 cfs
7am to 11am
21100 cfs
7am to 11am
31100 cfs
7am to 11am
41100 cfs
7am to 11am
51100 cfs
7am to 11am
61100 cfs
7am to 11am
71100 cfs
7am to 11am
81100 cfs
7am to 11am
91100 cfs
7am to 11am
101100 cfs
7am to 11am
111100 cfs
7am to 11am
121100 cfs
7am to 11am
131100 cfs
7am to 11am
14
 
151100 cfs
7am to 11am
161100 cfs
7am to 11am
171100 cfs
7am to 11am
181100 cfs
7am to 11am
191100 cfs
7am to 11am
201100 cfs
7am to 11am
211100 cfs
7am to 11am
221100 cfs
7am to 11am
231100 cfs
7am to 11am
241100 cfs
7am to 11am
251100 cfs
7am to 11am
261100 cfs
7am to 11am
271100 cfs
7am to 11am
28
 
291100 cfs
7am to 11am
301100 cfs
7am to 11am
311100 cfs
7am to 11am

 

August 2021
SunMonTueWedThuFriSat
11100 cfs
7am to 11am
21100 cfs
7am to 11am
31100 cfs
7am to 11am
41100 cfs
7am to 11am
51100 cfs
7am to 11am
61100 cfs
7am to 11am
71100 cfs
7am to 11am
81100 cfs
7am to 11am
91100 cfs
7am to 11am
101100 cfs
7am to 11am
11
 
121100 cfs
7am to 11am
131100 cfs
7am to 11am
141100 cfs
7am to 11am
151100 cfs
7am to 11am
161100 cfs
7am to 11am
171100 cfs
7am to 11am
181100 cfs
7am to 11am
191100 cfs
7am to 11am
201100 cfs
7am to 11am
211100 cfs
7am to 11am
221100 cfs
7am to 11am
231100 cfs
7am to 11am
241100 cfs
7am to 11am
25
 
261100 cfs
7am to 11am
271100 cfs
7am to 11am
281100 cfs
7am to 11am
291100 cfs
7am to 11am
301100 cfs
7am to 11am
311100 cfs
7am to 11am
       

 

September 2021
SunMonTueWedThuFriSat
      11100 cfs
7am to 11am
21100 cfs
7am to 11am
31100 cfs
7am to 11am
41100 cfs
7am to 11am
51100 cfs
7am to 11am
61100 cfs
7am to 11am
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 and Access Issues:

1.  Times reflect releases below Holm Powerhouse.  Flow estimates are at the confluence of the Tuolumne River and Cherry Creek.  It is assumed that it takes approximately two hours for water to travel from the confluence to Meral’s Pool (a.k.a. Lumsden Boat Launch).

2.  Flow at the confluence is a combination of power house releases and other streamflow releases.  Unless otherwise noted, expect most of the flow to come down Cherry Creek, i.e. from Holm Powerhouse.

3.  Management of the reservoirs during the snowmelt runoff period will result in flow in the Tuolumne River to be in excess of the posted schedule.  The recreational release accommodation schedule will begin once inflows to the reservoirs have receded.  Information during the runoff period will be posted to the Bulletin Board thread.

4.  Before heading out, be sure to check the relevant Dreamflows flow report and Bulletin Board thread to determine current and expected release trends.

5.  Flows beyond the schedule outlined above are at HHWP’s operational discretion.

6.  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.