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.
 Projected release based on the most recent scheduled release.
Note: "Projected releases" (if present) are best guesses generated by Dreamflows.


August 2018
      1800 cfs
 all day
2800 cfs
 all day
3800 cfs
 all day
4800 cfs
 all day
5800 cfs
 all day
6800 cfs
all day
7800 cfs
all day
8800 cfs
all day
9800 cfs
all day
10800 cfs
all day
11800 cfs
all day
12800 cfs
all day
13800 cfs
all day
14800 cfs
all day
15800 cfs
all day
16800 cfs
all day
17800 cfs
all day
18800 cfs
all day
19800 cfs
all day
20800 cfs
all day
21800 cfs
all day
22800 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 will not be held this year (they are held in odd-numbered years, typically late August).

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