Dreamflows Trinity - Lewiston Dam Release Schedule
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Releases From Lewiston Dam

In the table that follows, each date is color-coded according to the kind of release scheduled for that day:

 Scheduled release is not yet known.
 Scheduled release: 500 cfs or more below Lewiston Dam all day.
 Ramp up/down from Lewiston during the day.
 Estimated release based on most recent scheduled release.
Note: All information provided by U.S. Bureau of Reclamation.


July 2016
          1Ramping down
to 1,700 cfs
21,600 cfs
 all day
31,600 cfs
 all day
41,500 cfs
 all day
5Change to
 1,400 cfs at 8pm
61,400 cfs
 all day
71,400 cfs
 all day
8Change to
 1,300 cfs at 2pm
91,300 cfs
 all day
10Change to
 1,200 cfs at 2pm
111,200 cfs
 all day
121,200 cfs
 all day
131,200 cfs
 all day
141,200 cfs
 all day
151,200 cfs
 all day
161,200 cfs
 all day
171,200 cfs
 all day
18Ramping down
to 1,000 cfs
19Change to
 900 cfs at 6pm
20900 cfs
 all day
21Change to
 800 cfs at 6am
22750 cfs
 all day
23700 cfs
 all day
24700 cfs
all day

Water Management Issues:

1.  Detailed scheduled release information for the next few days is shown on this graph.

2.  Times reflect releases from Lewiston Dam, and it is assumed that it takes approximately 12 hours for the water to get to Pigeon Point and 20 hours to get to Cedar Flat.  This is a good rule of thumb, though the actual flow travel time is flow dependent (the higher the flow, the less time it takes).  Here are some approximate observed numbers:

Lewiston Release Time to Pigeon Point Time to Cedar Flat
500 cfs13 hours24 hours
1000 cfs12 hours20 hours
1500 cfs10 hours14 hours
3000 cfs9 hours13 hours

3.  The Hoopa Valley Tribe's Boat Dance Ceremony is not scheduled to be held this year (they are held only in odd-numbered years, typically late August).

4.  The above schedule is based on information provided by the U.S. Bureau of Reclamation.