Dreamflows Trinity - Lewiston Dam Release Schedule
 
"I can't boat everyday, but I can always Dream"
 
Home River Flows Bulletin Board Custom Email Reports Alerts Signup Login Help Search

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: 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.

 

June 2016
SunMonTueWedThuFriSat
      1Ramping down
to 3,000 cfs
2Change to
 3,100 cfs at 6pm
3Change to
 3,300 cfs at 4pm
4Change to
 3,100 cfs at 8pm
52,900 cfs
 all day
6Change to
 2,700 cfs at 4am
7Change to
 3,000 cfs at 4pm
8Ramping down
to 2,500 cfs then
up to 2,700 cfs
9Ramping down
to 2,300 cfs
10Change to
 2,500 cfs at 4pm
11Ramping up
to 2,800 cfs then
down to 2,700 cfs
12Ramping down
to 2,100 cfs
13Change to
 2,500 cfs at 4pm
14Change to
 2,300 cfs at noon
15Change to
 2,100 cfs at 6am
16Change to
 2,500 cfs at 6pm
17Ramping down
to 1,900 cfs
18Ramping down
to 1,800 cfs then
up to 2,000 cfs
192,000 cfs
 all day
202,000 cfs
 all day
212,000 cfs
 all day
222,000 cfs
 all day
232,000 cfs
 all day
24Change to
 1,900 cfs at 8pm
25Ramping down
to 1,700 cfs
26Change to
 1,900 cfs at 6pm
27Change to
 1,800 cfs at 2pm
28Ramping down
to 1,500 cfs then
up to 1,800 cfs
29Ramping down
to 1,600 cfs
30Ramping up
to 1,900 cfs
   

 

July 2016
SunMonTueWedThuFriSat
          1Ramping down
to 1,700 cfs
21,600 cfs
 all day
31,600 cfs
 all day
41,500 cfs
 all day
5Change to
 1,400 cfs at 8pm
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.  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.