Dreamflows Trinity - Lewiston Dam Release Schedule

Dreamflows Trinity - Lewiston Dam Release Schedule - 2026

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Releases From Lewiston Dam - Historical - 2026

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: 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 2026
Sun	Mon	Tue	Wed	Thu	Fri	Sat
				1Ramping down to 1,500 cfs	2Ramping down to 1,300 cfs	3Ramping down to 1,000 cfs
4Change to 900 cfs at noon	5Change to 800 cfs at 4am	6Ramping down to 600 cfs	7Ramping up to 1,500 cfs	81,500 cfs all day	91,500 cfs all day	101,500 cfs all day
111,500 cfs all day	12Ramping up to 3,000 cfs	133,000 cfs all day	143,000 cfs all day	153,000 cfs all day	163,000 cfs all day	173,000 cfs all day
183,000 cfs all day	193,000 cfs all day	203,000 cfs all day	213,000 cfs all day	223,000 cfs all day	23Ramping down to 2,000 cfs	24Ramping down to 1,400 cfs
25Ramping down to 800 cfs	26800 cfs all day	27800 cfs all day	28800 cfs all day	29Ramping down to 500 cfs	30Ramping down to 300 cfs	31300 cfs all day

February 2026
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

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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