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.
 Ramp up/down from Lewiston during the day.
Note: All information provided by U.S. Bureau of Reclamation.

 

May 2016
SunMonTueWedThuFriSat
1Ramping down
to 2,000 cfs then
up to 3,200 cfs
2Ramping down
to 2,500 cfs
3Ramping up
to 4,000 cfs
4Ramping down
to 3,000 cfs
5Ramping up
to 4,000 cfs
6Ramping up
to 4,400 cfs then
down
to 3,600 cfs
7Ramping up
to 4,500 cfs
8Ramping up
to 6,500 cfs then
down to 6,000 cfs
9Ramping up
to 10,000 cfs
10Ramping down
to 8,500 cfs
11Ramping down
to 6,500 cfs
12Ramping down
to 5,200 cfs then
up to 5,600 cfs
13
 
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.  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.