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: 300 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 information provided by U.S. Bureau of Reclamation.

 

April 2015
SunMonTueWedThuFriSat
       1   300 cfs
 all day 
 2   300 cfs
 all day 
 3   300 cfs
 all day 
 4   300 cfs
 all day 
 5   300 cfs
 all day 
 6   300 cfs
 all day 
 7   300 cfs
 all day 
 8   300 cfs
 all day 
 9   300 cfs
 all day 
 10   300 cfs
 all day 
 11   300 cfs
 all day 
 12   300 cfs
 all day 
 13   300 cfs
 all day 
 14   300 cfs
 all day 
 15   300 cfs
 all day 
 16   300 cfs
 all day 
 17   300 cfs
 all day 
 18   300 cfs
 all day 
 19   300 cfs
 all day 
 20   300 cfs
 all day 
 21   300 cfs
 all day 
 22   Ramping up
to 500 cfs 
 23   500 cfs
 all day 
 24   500 cfs
 all day 
 25   500 cfs
 all day 
 26   500 cfs
 all day 
 27   500 cfs
 all day 
 28   Change to
 600 cfs at 6am 
 29   Ramping up
to 850 cfs 
 30   Ramping up
to 1,400 cfs 
   

 

May 2015
SunMonTueWedThuFriSat
           1   Ramping up
to 2,400 cfs 
 2   Ramping up
to 3,400 cfs 
 3   Ramping up
to 4,400 cfs 
 4   Ramping up
to 8,500 cfs 
 5
 
 6
 
 7
 
 8
 
 9
 
 10
 
 11
 
 12
 
 13
 
 14
 
 15
 
 16
 
 17
 
 18
 
 19
 
 20
 
 21
 
 22
 
 23
 
 24
 
 25
 
 26
 
 27
 
 28
 
 29
 
 30
 
 31
 
           

Water Management Issues:

1.  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 Cedar Flat 
500 cfs24 hours
1000 cfs20 hours
1500 cfs14 hours
3000 cfs13 hours

2.  The Hoopa Valley Tribe's Boat Dance Ceremony is scheduled to be held this year (they are held in odd-numbered years).  The above schedule doesn't show boat dance releases yet ... so be sure to check back nearer the time (the releases typically occur late August).

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