Dreamflows Trinity - Lewiston Dam Release Schedule

Dreamflows Trinity - Lewiston Dam Release Schedule - 2023

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Releases From Lewiston Dam - Historical - 2023

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 2023
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	7Ramping up to 307 cfs
8Ramping up to 700 cfs then down to 300 cfs	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 2023
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	15Ramping up to 500 cfs	16500 cfs all day	17Change to 450 cfs at 4pm	18450 cfs all day
19Ramping up to 600 cfs	20Ramping up to 1,000 cfs	21Ramping up to 1,100 cfs then down to 950 cfs	22Ramping down to 800 cfs	23Ramping down to 700 cfs	24Change to 650 cfs at 4am	25650 cfs all day
26Change to 700 cfs at 8am	27700 cfs all day	28Change to 650 cfs at 10pm

March 2023
Sun	Mon	Tue	Wed	Thu	Fri	Sat
			1650 cfs all day	2650 cfs all day	3650 cfs all day	4Change to 700 cfs at 10pm
5Change to 750 cfs at 6pm	6Change to 800 cfs at 4pm	7Change to 750 cfs at 8am	8Change to 700 cfs at 2am	9700 cfs all day	10700 cfs all day	11Change to 750 cfs at 6am
12Ramping up to 900 cfs then down to 850 cfs	13Ramping down to 750 cfs	14Change to 700 cfs at noon	15Change to 750 cfs at 10am	16Change to 800 cfs at 8am	17Ramping up to 900 cfs	18Ramping up to 1,000 cfs
19Ramping up to 1,350 cfs	20Ramping up to 1,950 cfs then down to 1,800 cfs	21Ramping down to 1,450 cfs	22Ramping down to 1,200 cfs	23Ramping down to 1,100 cfs	24Ramping down to 1,000 cfs	251,000 cfs all day
26Change to 1,050 cfs at 8am	27Change to 1,100 cfs at 8am	28Change to 1,150 cfs at 8am	29Change to 1,100 cfs at 10am	30Change to 1,050 cfs at 10am	31Change to 1,000 cfs at 8am

April 2023
Sun	Mon	Tue	Wed	Thu	Fri	Sat
						1Ramping up to 1,150 cfs
2Ramping up to 1,350 cfs	3Ramping up to 1,800 cfs	4Ramping up to 3,100 cfs then down to 3,000 cfs	5Ramping down to 2,500 cfs then up to 2,700 cfs	6Ramping up to 2,900 cfs then down to 2,300 cfs	7Ramping up to 2,650 cfs then down to 2,100 cfs	8Ramping up to 2,250 cfs then down to 2,000 cfs
9Ramping up to 2,400 cfs then down to 2,300 cfs	10Ramping up to 3,150 cfs	11Ramping up to 4,600 cfs then down to 4,500 cfs	12Ramping down to 3,600 cfs then up to 3,800 cfs	13Ramping up to 4,200 cfs then down to 3,500 cfs	14Ramping up to 3,900 cfs then down to 3,300 cfs	15Ramping up to 4,000 cfs
16Ramping up to 9,500 cfs	17Ramping up to 11,000 cfs	18Change to 10,500 cfs at 6pm	19Ramping down to 8,000 cfs	20Ramping down to 6,000 cfs	21Ramping up to 10,500 cfs	22Ramping up to 10,500 cfs
23Ramping down to 9,000 cfs	24Ramping down to 7,000 cfs	25Ramping down to 5,200 cfs	26Ramping up to 10,000 cfs then down to 9,500 cfs	27Ramping down to 6,500 cfs	28Ramping down to 4,200 cfs	29Ramping down to 3,550 cfs then up to 3,750 cfs
30Ramping up to 3,850 cfs then down to 3,400 cfs

May 2023
Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1Ramping down to 2,950 cfs then up to 3,200 cfs	2Ramping down to 2,750 cfs then up to 3,000 cfs	3Ramping down to 2,650 cfs then up to 2,900 cfs	4Ramping down to 2,550 cfs	5Ramping down to 2,200 cfs then up to 2,350 cfs	6Ramping down to 2,000 cfs then up to 2,200 cfs
7Ramping down to 1,900 cfs then up to 2,100 cfs	8Ramping down to 1,900 cfs then up to 2,050 cfs	9Ramping down to 1,750 cfs then up to 1,950 cfs	10Ramping down to 1,750 cfs then up to 1,900 cfs	11Ramping down to 1,600 cfs then up to 1,900 cfs	12Ramping down to 1,700 cfs then up to 1,800 cfs	13Ramping down to 1,600 cfs then up to 1,850 cfs
14Ramping down to 1,650 cfs then up to 1,800 cfs	15Ramping down to 1,600 cfs then up to 1,750 cfs	16Ramping down to 1,550 cfs then up to 1,700 cfs	17Ramping up to 1,800 cfs then down to 1,600 cfs	18Ramping up to 1,700 cfs then down to 1,500 cfs	19Ramping down to 1,400 cfs then up to 1,600 cfs	20Ramping down to 1,400 cfs then up to 1,500 cfs
21Ramping up to 1,600 cfs then down to 1,300 cfs	22Ramping up to 1,500 cfs then down to 1,300 cfs	23Ramping down to 1,200 cfs then up to 1,300 cfs	24Ramping down to 1,100 cfs	25Ramping up to 1,300 cfs then down to 1,200 cfs	26Ramping up to 1,350 cfs	27Ramping down to 1,150 cfs then up to 1,250 cfs
28Ramping up to 1,350 cfs then down to 1,050 cfs	29Ramping up to 1,600 cfs	30Ramping up to 1,900 cfs	31Ramping up to 2,100 cfs then down to 1,800 cfs

June 2023
Sun	Mon	Tue	Wed	Thu	Fri	Sat
				1Ramping down to 1,400 cfs	2Ramping down to 1,200 cfs	3Ramping down to 1,000 cfs
4Ramping down to 700 cfs	5Ramping up to 900 cfs then down to 700 cfs	6Ramping up to 900 cfs then down to 600 cfs	7Ramping up to 800 cfs then down to 600 cfs	8Ramping up to 800 cfs then down to 600 cfs	9Ramping up to 800 cfs then down to 600 cfs	10Ramping up to 800 cfs then down to 600 cfs
11Ramping up to 800 cfs then down to 500 cfs	12Ramping up to 700 cfs then down to 500 cfs	13Ramping up to 800 cfs then down to 600 cfs	14Ramping up to 800 cfs then down to 500 cfs	15Ramping up to 600 cfs then down to 450 cfs	16Ramping up to 600 cfs then down to 450 cfs	17Ramping up to 600 cfs then down to 450 cfs
18Ramping up to 600 cfs then down to 450 cfs	19Ramping up to 600 cfs then down to 450 cfs	20Ramping up to 550 cfs then down to 450 cfs	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

July 2023
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

August 2023
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	18Ramping up to 700 cfs	19700 cfs all day
20Ramping up to 2300 cfs	21Ramping down to 1900 cfs	22Ramping down to 1300 cfs	23Ramping down to 750 cfs	24750 cfs all day	25Ramping down to 450 cfs	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 2023
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

October 2023
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	16Ramping down to 300 cfs	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 2023
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 2023
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. Releases for the Hoopa Valley Tribe's Boat Dance Ceremony (which is held in odd-numbered years) went from Aug 18 through Aug 25, 2023.

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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