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:

ColorMeaning
 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.
 Projected release based on the most recent scheduled release.
Note: Projected releases are intended to show likely releases for today and into the near future, but don't rely on them.
Note: All scheduled releases based on information provided by U.S. Bureau of Reclamation.

 

July 2026
SunMonTueWedThuFriSat
      1550 cfs
 all day
2Change to
 500 cfs at 2am
3Change to
 450 cfs at 2am
4450 cfs
all day
5450 cfs
all day
6450 cfs
all day
7450 cfs
all day
8450 cfs
all day
9450 cfs
all day
10450 cfs
all day
11450 cfs
all day
12450 cfs
all day
13450 cfs
all day
14450 cfs
all day
15450 cfs
all day
16450 cfs
all day
17450 cfs
all day
18
 
19
 
20
 
21
 
22
 
23
 
24
 
25
 
26
 
27
 
28
 
29
 
30
 
31
 
 

Water Management Issues:

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

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

3.  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