Dreamflows Trinity - Lewiston Dam Release Schedule
 
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Releases From Lewiston Dam

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

ColorMeaning
 Scheduled release is not yet known.
 Scheduled release: 450 cfs below Lewiston Dam all day.
 Scheduled release: 500 cfs or more below Lewiston Dam all day.
 Ramp up/down from Lewiston during the day.
Note: All scheduled releases based on information provided by U.S. Bureau of Reclamation.

 

September 2020
SunMonTueWedThuFriSat
    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
12Ramping up
to 1,050 cfs
131,050 cfs
 all day
141,050 cfs
 all day
15Ramping down
to 850 cfs
16850 cfs
 all day
17850 cfs
 all day
18850 cfs
 all day
19Ramping down
to 450 cfs
20450 cfs
 all day
21450 cfs
 all day
22450 cfs
 all day
23450 cfs
 all day
24450 cfs
 all day
25450 cfs
 all day
26450 cfs
 all day
27450 cfs
 all day
28450 cfs
 all day
29450 cfs
 all day
30450 cfs
 all day
     

 

October 2020
SunMonTueWedThuFriSat
        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
14
 
15
 
16
 
17
 
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 was not 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