Dreamflows Trinity - Lewiston Dam Release Schedule - 2009
 
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Releases From Lewiston Dam - Historical - 2009

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: 450 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.
 Scheduled release for the Native American Boat Dance, see Note 1 below.
Note: All information provided by U.S. Bureau of Reclamation.

 

January 2009
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 2009
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

 

March 2009
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 2009
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
During daytime
27900 cfs
During daytime
281500 cfs
During daytime
292500 cfs
During daytime
303500 cfs
During daytime
   

 

May 2009
SunMonTueWedThuFriSat
          14500 cfs
all day
24500 cfs
all day
34500 cfs
all day
44500 cfs
all day
54500 cfs
all day
64250 cfs
all day
74000 cfs
all day
83800 cfs
all day
93600 cfs
all day
103300 cfs
all day
113000 cfs
all day
122800 cfs
all day
132600 cfs
all day
142500 cfs
all day
152400 cfs
all day
162300 cfs
all day
172200 cfs
all day
182000 cfs
all day
192000 cfs
all day
202000 cfs
all day
212000 cfs
all day
222000 cfs
all day
232000 cfs
all day
242000 cfs
all day
252000 cfs
all day
262000 cfs
all day
272000 cfs
all day
282000 cfs
all day
292000 cfs
all day
301750 cfs
all day
311550 cfs
all day
           

 

June 2009
SunMonTueWedThuFriSat
  11350 cfs
all day
21200 cfs
all day
31200 cfs
all day
41200 cfs
all day
51200 cfs
all day
61200 cfs
all day
71200 cfs
all day
81200 cfs
all day
91200 cfs
all day
101200 cfs
all day
111200 cfs
all day
121200 cfs
all day
131050 cfs
all day
14900 cfs
all day
15800 cfs
all day
16700 cfs
all day
17700 cfs
all day
18700 cfs
all day
19700 cfs
all day
20700 cfs
all day
21700 cfs
all day
22700 cfs
all day
23700 cfs
all day
24700 cfs
all day
25700 cfs
all day
26670 cfs
all day
27640 cfs
all day
28630 cfs
all day
29621 cfs
all day
30594 cfs
all day
       

 

July 2009
SunMonTueWedThuFriSat
      1568 cfs
all day
2544 cfs
all day
3521 cfs
all day
4498 cfs
all day
5477 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
14450 cfs
all day
15450 cfs
all day
16450 cfs
all day
17450 cfs
all day
18450 cfs
all day
19450 cfs
all day
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
31450 cfs
all day
 

 

August 2009
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
14450 cfs
all day
15450 cfs
all day
16450 cfs
all day
17450 cfs
all day
18450 cfs
all day
19450 cfs
all day
20450 cfs
all day
21450 cfs
all day
22450 cfs
all day
23Ramp up
See Note 1 below
242650 cfs
all day
25Ramp down
See Note 1 below
26Ramp down
See Note 1 below
27Ramp down
See Note 1 below
28450 cfs
all day
29450 cfs
all day
30450 cfs
all day
31450 cfs
all day
         

 

September 2009
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
14450 cfs
all day
15450 cfs
all day
16450 cfs
all day
17450 cfs
all day
18450 cfs
all day
19450 cfs
all day
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 2009
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
14450 cfs
all day
15450 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

 

November 2009
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
         

 

December 2009
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
   

Water Management Issues:

1.  Lewiston Dam released flows for the Native American Boat Dance (which is held in odd-numbered years) from Aug 23 through Aug 27, 2009.  For detailed ramping information, see this bulletin board post.

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