Dreamflows Trinity - Lewiston Dam Release Schedule - 2020
 
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Releases From Lewiston Dam - Historical - 2020

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

ColorMeaning
 Scheduled release: 300 cfs below Lewiston Dam all day.
 Scheduled release: 500 cfs or more below Lewiston Dam all day.
 Ramping up/down from Lewiston during the day.
Note: All information provided by U.S. Bureau of Reclamation.

 

January 2020
SunMonTueWedThuFriSat
      1300 cfs
 all day
2300 cfs
 all day
3300 cfs
 all day
4300 cfs
 all day
5300 cfs
 all day
6300 cfs
 all day
7300 cfs
 all day
8300 cfs
 all day
9300 cfs
 all day
10300 cfs
 all day
11300 cfs
 all day
12300 cfs
 all day
13300 cfs
 all day
14300 cfs
 all day
15300 cfs
 all day
16300 cfs
 all day
17300 cfs
 all day
18300 cfs
 all day
19300 cfs
 all day
20300 cfs
 all day
21300 cfs
 all day
22300 cfs
 all day
23300 cfs
 all day
24300 cfs
 all day
25300 cfs
 all day
26300 cfs
 all day
27300 cfs
 all day
28300 cfs
 all day
29300 cfs
 all day
30300 cfs
 all day
31300 cfs
 all day
 

 

February 2020
SunMonTueWedThuFriSat
            1300 cfs
 all day
2300 cfs
 all day
3300 cfs
 all day
4300 cfs
 all day
5300 cfs
 all day
6300 cfs
 all day
7300 cfs
 all day
8300 cfs
 all day
9300 cfs
 all day
10300 cfs
 all day
11300 cfs
 all day
12300 cfs
 all day
13300 cfs
 all day
14300 cfs
 all day
15300 cfs
 all day
16300 cfs
 all day
17300 cfs
 all day
18300 cfs
 all day
19300 cfs
 all day
20300 cfs
 all day
21300 cfs
 all day
22300 cfs
 all day
23300 cfs
 all day
24300 cfs
 all day
25300 cfs
 all day
26300 cfs
 all day
27300 cfs
 all day
28300 cfs
 all day
29300 cfs
 all day

 

March 2020
SunMonTueWedThuFriSat
1300 cfs
 all day
2300 cfs
 all day
3300 cfs
 all day
4300 cfs
 all day
5300 cfs
 all day
6300 cfs
 all day
7300 cfs
 all day
8300 cfs
 all day
9300 cfs
 all day
10300 cfs
 all day
11300 cfs
 all day
12300 cfs
 all day
13300 cfs
 all day
14300 cfs
 all day
15300 cfs
 all day
16300 cfs
 all day
17300 cfs
 all day
18300 cfs
 all day
19300 cfs
 all day
20300 cfs
 all day
21300 cfs
 all day
22300 cfs
 all day
23300 cfs
 all day
24300 cfs
 all day
25300 cfs
 all day
26300 cfs
 all day
27300 cfs
 all day
28300 cfs
 all day
29300 cfs
 all day
30300 cfs
 all day
31300 cfs
 all day
       

 

April 2020
SunMonTueWedThuFriSat
      1300 cfs
 all day
2300 cfs
 all day
3300 cfs
 all day
4300 cfs
 all day
5300 cfs
 all day
6300 cfs
 all day
7300 cfs
 all day
8300 cfs
 all day
9300 cfs
 all day
10300 cfs
 all day
11300 cfs
 all day
12300 cfs
 all day
13300 cfs
 all day
14Ramping up
to 1,500 cfs then
down to 1,300 cfs
15Ramping down
to 700 cfs
16Ramping down
to 450 cfs then
up to 700 cfs
17Ramping up
to 1,500 cfs then
down to 1,100 cfs
18Ramping down
to 500 cfs
19Ramping down
to 450 cfs then
up to 1,300 cfs
20Ramping down
to 700 cfs
21Ramping down
to 450 cfs then
up to 700 cfs
22Ramping up
to 1,500 cfs
23Ramping up
to 3,900 cfs
24Ramping down
to 3,500 cfs
25Ramping down
to 2,300 cfs
26Ramping down
to 1,600 cfs
27Ramping down
to 1,450 cfs
28Ramping up
to 1,750 cfs
29Ramping up
to 1,750 cfs
30Ramping down
to 1,600 cfs
   

 

May 2020
SunMonTueWedThuFriSat
          1Change to
 1,550 cfs at 8am
2Change to
 1,500 cfs at 6am
3Change to
 1,450 cfs at 8am
4Change to
 1,400 cfs at noon
5Change to
 1,350 cfs at 10am
6Change to
 1,300 cfs at 10am
7Change to
 1,250 cfs at 10am
8Change to
 1,200 cfs at 10am
91,200 cfs
 all day
10Change to
 1,150 cfs at 4am
11Change to
 1,100 cfs at 10pm
121,100 cfs
 all day
131,100 cfs
 all day
14Change to
 1,050 cfs at 2am
15Change to
 1,000 cfs at 10pm
161,000 cfs
 all day
171,000 cfs
 all day
181,000 cfs
 all day
19Change to
 950 cfs at 10am
20950 cfs
 all day
21950 cfs
 all day
22950 cfs
 all day
23950 cfs
 all day
24Change to
 900 cfs at 8am
25900 cfs
 all day
26900 cfs
 all day
27900 cfs
 all day
28900 cfs
 all day
29Change to
 850 cfs at 8pm
30850 cfs
 all day
31850 cfs
 all day
           

 

June 2020
SunMonTueWedThuFriSat
  1850 cfs
 all day
2850 cfs
 all day
3850 cfs
 all day
4800 cfs
 all day
5800 cfs
 all day
6800 cfs
 all day
7800 cfs
 all day
8Change to
 750 cfs at 8pm
9750 cfs
 all day
10750 cfs
 all day
11750 cfs
 all day
12750 cfs
 all day
13Ramping up
to 900 cfs
14Ramping up
to 1,300 cfs
15Ramping up
to 1,400 cfs
16Ramping down
to 1,300 cfs
17Ramping down
to 1,000 cfs
18Ramping down
to 850 cfs
19Ramping down
to 750 cfs
20Change to
 700 cfs at 6am
21700 cfs
 all day
22Change to
 650 cfs at 4am
23650 cfs
 all day
24Change to
 600 cfs at 4am
25600 cfs
 all day
26Change to
 550 cfs at 2pm
27550 cfs
 all day
28Change to
 500 cfs at 8pm
29500 cfs
 all day
30500 cfs
 all day
       

Water Management Issues:

1.  The Hoopa Valley Tribe's Boat Dance Ceremony will not be held this year (they are held in odd-numbered years, typically late August).

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