Dreamflows Trinity - Lewiston Dam Release Schedule

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:

Color	Meaning
	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.

Note: All information provided by U.S. Bureau of Reclamation.

January 2020
Sun	Mon	Tue	Wed	Thu	Fri	Sat
			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
Sun	Mon	Tue	Wed	Thu	Fri	Sat
						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
Sun	Mon	Tue	Wed	Thu	Fri	Sat
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
Sun	Mon	Tue	Wed	Thu	Fri	Sat
			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
Sun	Mon	Tue	Wed	Thu	Fri	Sat
					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
Sun	Mon	Tue	Wed	Thu	Fri	Sat
	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

July 2020
Sun	Mon	Tue	Wed	Thu	Fri	Sat
			1500 cfs all day	2Change to 450 cfs at 6am	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	31450 cfs all day

August 2020
Sun	Mon	Tue	Wed	Thu	Fri	Sat
						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	31450 cfs all day

September 2020
Sun	Mon	Tue	Wed	Thu	Fri	Sat
		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	12Ramping up to 1,050 cfs
131,050 cfs all day	141,050 cfs all day	15Ramping down to 850 cfs	16850 cfs all day	17850 cfs all day	18850 cfs all day	19Ramping down to 450 cfs
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 2020
Sun	Mon	Tue	Wed	Thu	Fri	Sat
				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	14Change to 400 cfs at 8am	15Change to 350 cfs at 8am	16Change to 300 cfs at 8am	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 2020
Sun	Mon	Tue	Wed	Thu	Fri	Sat
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 2020
Sun	Mon	Tue	Wed	Thu	Fri	Sat
		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. The Hoopa Valley Tribe's Boat Dance Ceremony was not held this year (they are held only 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 cfs	13 hours	24 hours
1000 cfs	12 hours	20 hours
1500 cfs	10 hours	14 hours
3000 cfs	9 hours	13 hours

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