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: 450 cfs 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" (if present) are best guesses generated by Dreamflows.


October 2019
    1450 cfs
 all day
2450 cfs
 all day
3450 cfs
 all day
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
14Change to
 400 cfs at 8am
15Change to
 350 cfs at 8am
16Change to
 300 cfs at 8am
17300 cfs
all day
18300 cfs
all day
19300 cfs
all day
20300 cfs
all day
21300 cfs
all day
22300 cfs
all day
23300 cfs
all day
24300 cfs
all day

Water Management Issues:

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

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

3.  The Hoopa Valley Tribe's Boat Dance Ceremony (which is held in odd-numbered years) will go from Sep 1 through Sep 5, 2019.

4.  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