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

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: Less than 750 cfs total estimated releases from the HHWP project.
 Scheduled release: 1100 cfs or more total estimated releases from the HHWP project.
Note: All information provided by Hetch Hetchy Water and Power.
Note: Things can change.  See the current Dreamflows Bulletin Board thread as well as links on the flow reports for late-breaking news.

 

June 2018
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
13
 
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
251100 cfs
7am to 11am
261100 cfs
7am to 11am
27
 
281100 cfs
7am to 11am
291100 cfs
7am to 11am
301100 cfs
7am to 11am

 

July 2018
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
       

 

August 2018
SunMonTueWedThuFriSat
      11100 cfs
7am to 11am
2550 cfs
6am to noon
3550 cfs
6am to noon
4550 cfs
6am to noon
5550 cfs
6am to noon
6550 cfs
6am to noon
7550 cfs
6am to noon
8
 
9550 cfs
6am to noon
10550 cfs
6am to noon
11550 cfs
6am to noon
12550 cfs
6am to noon
13550 cfs
6am to noon
14550 cfs
6am to noon
15550 cfs
6am to noon
16550 cfs
6am to noon
17550 cfs
6am to noon
18550 cfs
6am to noon
19550 cfs
6am to noon
20550 cfs
6am to noon
21550 cfs
6am to noon
22
 
23550 cfs
6am to noon
24550 cfs
6am to noon
25550 cfs
6am to noon
26550 cfs
6am to noon
27550 cfs
6am to noon
28550 cfs
6am to noon
29550 cfs
6am to noon
30550 cfs
6am to noon
31550 cfs
6am to noon
 

 

September 2018
SunMonTueWedThuFriSat
            1550 cfs
6am to noon
2550 cfs
6am to noon
3550 cfs
6am to noon
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 and Access Issues:

1.  Flow rate estimates and timing 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.  The original schedule for August was 1100 cfs from 7am to 11am.  However, one of the power generating units at Holm Powerhouse developed an issue on August 1.  As a consequence, the new schedule changed from August 2 onward to: releases from Holm Powerhouse of at least 550 cfs from 6am to noon, as shown above.  Expect more than 550 cfs at the Tuolumne/Cherry Creek confluence.

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.