US Army Corps of Engineers

Grand Coulee Dam

Saturday May 9, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 123.90 123.90 0.00 1254.30 962.80 291.50
2 116.90 116.90 0.00 1254.20 962.40 291.80
3 129.60 129.60 0.00 1254.20 963.10 291.10
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
AVG 123.47 123.47 0.00 1254.23 962.77 291.47
MAX 129.60 129.60 0.00 1254.30 963.10 291.80
MIN 116.90 116.90 0.00 1254.20 962.40 291.10