Dreamflows Trinity - Lewiston Dam Release Schedule

Dreamflows Trinity - Lewiston Dam Release Schedule

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Releases From Lewiston Dam

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

Color	Meaning
	Scheduled release is not yet known.
	Scheduled release: 500 cfs or more below Lewiston Dam all day.
	Ramp up/down from Lewiston during the day.
	Projected release based on the most recent scheduled release.

Note: Projected releases are intended to show likely releases for today and into the near future, but don't rely on them.
Note: All scheduled releases based on information provided by U.S. Bureau of Reclamation.

July 2026
Sun	Mon	Tue	Wed	Thu	Fri	Sat
			1550 cfs all day	2Change to 500 cfs at 2am	3Change to 450 cfs at 2am	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 2026
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
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30	31

Water Management Issues:

1. Detailed scheduled release information for the next few days is shown on this graph.

2. The Hoopa Valley Tribe's Boat Dance Ceremony will not be held this year (they are held only in odd-numbered years, typically late August).

3. 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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