Dreamflows Trinity - Lewiston Dam Release Schedule - 2017
 
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Releases From Lewiston Dam - Historical - 2017

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 2017
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 2017
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 2017
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 2017
SunMonTueWedThuFriSat
            1300 cfs
 all day
2300 cfs
 all day
3300 cfs
 all day
4300 cfs
 all day
5Ramping up
to 1,500 cfs
61,500 cfs
 all day
71,500 cfs
 all day
81,500 cfs
 all day
91,500 cfs
 all day
101,500 cfs
 all day
111,500 cfs
 all day
121,500 cfs
 all day
131,500 cfs
 all day
141,500 cfs
 all day
151,500 cfs
 all day
161,500 cfs
 all day
171,500 cfs
 all day
181,500 cfs
 all day
19Ramping down
to 1,100 cfs
20Ramping down
to 500 cfs
21400 cfs
 all day
22Ramping up
to 1,200 cfs
23Ramping up
to 2,500 cfs
24Ramping up
to 4,000 cfs
25Ramping up
to 7,000 cfs
26Ramping up
to 11,000 cfs
2711,000 cfs
 all day
2811,000 cfs
 all day
29Ramping down
to 9,000 cfs
30Ramping down
to 7,000 cfs
           

 

May 2017
SunMonTueWedThuFriSat
  1Ramping down
to 5,200 cfs
2Ramping down
to 3,800 cfs
3Ramping down
to 2,800 cfs
4Change to
 2,700 cfs at noon
52,500 cfs
 all day
6Ramping down
to 2,100 cfs
7Ramping down
to 2,000 cfs then
up to 2,100 cfs
8Change to
 2,400 cfs at 4pm
92,400 cfs
 all day
10Ramping up
to 5,400 cfs
115,400 cfs
 all day
125,400 cfs
 all day
135,400 cfs
 all day
145,400 cfs
 all day
15Change to
 5,200 cfs at 8am
16Change to
 5,000 cfs at noon
175,000 cfs
 all day
18Change to
 4,800 cfs at 2pm
19Change to
 4,700 cfs at 2pm
20Change to
 4,600 cfs at 8am
21Change to
 4,400 cfs at 2pm
22Change to
 4,300 cfs at 6pm
23Change to
 4,100 cfs at noon
24Change to
 4,500 cfs at 8am
25Ramping down
to 4,000 cfs
26Change to
 4,500 cfs at 6am
27Ramping down
to 3,900 cfs
284,400 cfs
 all day
29Change to
 4,000 cfs at noon
30Change to
 4,500 cfs at 8am
31Change to
 4,200 cfs at 6am
     

 

June 2017
SunMonTueWedThuFriSat
        1Change to
 4,100 cfs at 2pm
2Change to
 4,000 cfs at noon
3Change to
 3,900 cfs at noon
4Change to
 3,800 cfs at 10am
5Change to
 3,700 cfs at noon
6Change to
 3,600 cfs at noon
7Change to
 3,500 cfs at 2pm
8Change to
 3,400 cfs at 4pm
9Change to
 3,300 cfs at 10pm
103,300 cfs
 all day
11Change to
 3,200 cfs at 6am
12Change to
 3,100 cfs at noon
13Change to
 3,000 cfs at noon
14Change to
 2,900 cfs at 4pm
15Change to
 2,800 cfs at 6pm
16Change to
 2,700 cfs at 8pm
172,700 cfs
 all day
18Change to
 2,600 cfs at noon
19Change to
 2,500 cfs at 2pm
20Change to
 2,400 cfs at 10pm
212,400 cfs
 all day
22Change to
 2,300 cfs at noon
23Change to
 2,200 cfs at 4pm
242,200 cfs
 all day
25Change to
 2,100 cfs at noon
26Change to
 2,000 cfs at 2pm
272,000 cfs
 all day
282,000 cfs
 all day
292,000 cfs
 all day
302,000 cfs
 all day
 

 

July 2017
SunMonTueWedThuFriSat
            12,000 cfs
 all day
2Change to
 1,900 cfs at noon
31,900 cfs
 all day
4Ramping down
to 1,700 cfs
5Ramping up
to 1,800 cfs then
down to 1,700 cfs
6Change to
 1,600 cfs at 2pm
71,600 cfs
 all day
8Change to
 1,500 cfs at noon
91,500 cfs
 all day
10Change to
 1,400 cfs at noon
11Change to
 1,300 cfs at 4pm
121,300 cfs
 all day
13Change to
 1,300 cfs at 8am
14Ramping down
to 1,200 cfs
15Ramping down
to 1,100 cfs
16Ramping up
to 1,200 cfs then
down to 1,100 cfs
17Change to
 1,200 cfs at 6am
181,200 cfs
 all day
191,200 cfs
 all day
201,200 cfs
 all day
211,200 cfs
 all day
22Ramping down
to 1,000 cfs
231,000 cfs
 all day
24Ramping down
to 900 cfs then
back to 1,000 cfs
25900 cfs
 all day
26Change to
 800 cfs at 6pm
27Ramping up
to 900 cfs then
back to 800 cfs
28800 cfs
 all day
29Ramping down
to 700 cfs then
back to 800 cfs
30Change to
 700 cfs at 4am
31Change to
 700 cfs at 10am
         

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 Pigeon Point Time to Cedar Flat
500 cfs13 hours24 hours
1000 cfs12 hours20 hours
1500 cfs10 hours14 hours
3000 cfs9 hours13 hours