Dreamflows Trinity - Lewiston Dam Release Schedule

Dreamflows Trinity - Lewiston Dam Release Schedule - 2025

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Releases From Lewiston Dam - Historical - 2025

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

Color	Meaning
	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 2025
Sun	Mon	Tue	Wed	Thu	Fri	Sat
			11,500 cfs all day	21,500 cfs all day	31,500 cfs all day	41,500 cfs all day
51,500 cfs all day	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
191,500 cfs all day	201,500 cfs all day	211,500 cfs all day	221,500 cfs all day	231,500 cfs all day	241,500 cfs all day	251,500 cfs all day
261,500 cfs all day	271,500 cfs all day	281,500 cfs all day	291,500 cfs all day	301,500 cfs all day	311,500 cfs all day

February 2025
Sun	Mon	Tue	Wed	Thu	Fri	Sat
						11,500 cfs all day
21,500 cfs all day	31,500 cfs all day	41,500 cfs all day	51,500 cfs all day	61,500 cfs all day	7Ramping up to 3,500 cfs	83,500 cfs all day
93,500 cfs all day	103,500 cfs all day	113,500 cfs all day	123,500 cfs all day	133,500 cfs all day	143,500 cfs all day	153,500 cfs all day
163,500 cfs all day	173,500 cfs all day	183,500 cfs all day	193,500 cfs all day	203,500 cfs all day	213,500 cfs all day	223,500 cfs all day
233,500 cfs all day	243,500 cfs all day	253,500 cfs all day	263,500 cfs all day	273,500 cfs all day	283,500 cfs all day

March 2025
Sun	Mon	Tue	Wed	Thu	Fri	Sat
						13,500 cfs all day
23,500 cfs all day	33,500 cfs all day	43,500 cfs all day	53,500 cfs all day	63,500 cfs all day	73,500 cfs all day	83,500 cfs all day
93,500 cfs all day	103,500 cfs all day	113,500 cfs all day	123,500 cfs all day	13Ramping down to 2,900 cfs	14Ramping down to 2,300 cfs	15Ramping down to 2,000 cfs
162,000 cfs all day	172,000 cfs all day	182,000 cfs all day	192,000 cfs all day	202,000 cfs all day	21Ramping up to 2,400 cfs then down to 2,100 cfs	22Ramping down to 1,600 cfs
231,600 cfs all day	24Ramping down to 1,500 cfs	251,500 cfs all day	26Ramping up to 1,750 cfs then down to 1,700 cfs	27Ramping down to 1,500 cfs	28Ramping down to 1,400 cfs	291,400 cfs all day
30Ramping up to 3,000 cfs then down to 2,600 cfs	31Ramping down to 2,100 cfs

April 2025
Sun	Mon	Tue	Wed	Thu	Fri	Sat
		1Ramping down to 1,750 cfs	21,750 cfs all day	3Ramping down to 1,550 cfs	41,550 cfs all day	51,500 cfs all day
6Ramping down to 1,350 cfs	71,350 cfs all day	8Ramping up to 4,000 cfs	9Ramping down to 2,800 cfs	10Ramping down to 2,400 cfs	11Ramping down to 2,100 cfs	122,100 cfs all day
13Change to 2,000 cfs at 2am	142,000 cfs all day	15Ramping up to 4,350 cfs	16Ramping up to 8,500 cfs then down to 8,250 cfs	17Ramping down to 7,500 cfs	18Ramping down to 6,800 cfs	19Ramping down to 6,000 cfs
20Ramping down to 5,200 cfs	21Ramping down to 4,400 cfs	22Ramping down to 4,000 cfs	23Change to 3,800 cfs at 8am	243,600 cfs all day	253,400 cfs all day	263,250 cfs all day
273,100 cfs all day	282,950 cfs all day	292,850 cfs all day	302,750 cfs all day

May 2025
Sun	Mon	Tue	Wed	Thu	Fri	Sat
				12,700 cfs all day	22,600 cfs all day	32,500 cfs all day
42,400 cfs all day	52,300 cfs all day	62,200 cfs all day	72,150 cfs all day	8Ramping down to 2,050 cfs	92,000 cfs all day	101,950 cfs all day
111,900 cfs all day	121,850 cfs all day	131,800 cfs all day	141,750 cfs all day	151,700 cfs all day	161,650 cfs all day	171,600 cfs all day
181,550 cfs all day	191,500 cfs all day	201,450 cfs all day	211,450 cfs all day	221,350 cfs all day	231,350 cfs all day	241,250 cfs all day
251,250 cfs all day	261,150 cfs all day	271,150 cfs all day	281,150 cfs all day	29Change to 1,100 cfs at 2am	301,100 cfs all day	311,100 cfs all day

June 2025
Sun	Mon	Tue	Wed	Thu	Fri	Sat
11,050 cfs all day	21,050 cfs all day	31,050 cfs all day	41,000 cfs all day	51,000 cfs all day	61,000 cfs all day	71,000 cfs all day
8950 cfs all day	9950 cfs all day	10950 cfs all day	11900 cfs all day	12900 cfs all day	13900 cfs all day	14850 cfs all day
15850 cfs all day	16850 cfs all day	17850 cfs all day	18800 cfs all day	19800 cfs all day	20800 cfs all day	21800 cfs all day
22750 cfs all day	23750 cfs all day	24Change to 700 cfs at 6pm	25700 cfs all day	26650 cfs all day	27650 cfs all day	28650 cfs all day
29650 cfs all day	30600 cfs all day

July 2025
Sun	Mon	Tue	Wed	Thu	Fri	Sat
		1600 cfs all day	2600 cfs all day	3600 cfs all day	4600 cfs all day	5600 cfs all day
6600 cfs all day	7600 cfs all day	8Ramping up to 700 cfs	9Ramping up to 800 cfs	10Ramping up to 950 cfs	11Change to 1,000 cfs at 4pm	121,000 cfs all day
131,000 cfs all day	14Change to 900 cfs at noon	15900 cfs all day	16850 cfs all day	17850 cfs all day	18800 cfs all day	19800 cfs all day
20750 cfs all day	21700 cfs all day	22650 cfs all day	23650 cfs all day	24650 cfs all day	25650 cfs all day	26650 cfs all day
27600 cfs all day	28600 cfs all day	29600 cfs all day	30600 cfs all day	31Change to 650 cfs at 6am

Water Management Issues:

1. The Hoopa Valley Tribe's Boat Dance Ceremony will be 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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