US Army Corps of Engineers

Grand Coulee Dam

Thursday May 7, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 81.60 81.60 0.00 1252.50 959.60 292.90
2 62.10 62.10 0.00 1252.50 957.80 294.70
3 55.70 55.70 0.00 1252.60 957.10 295.50
4 61.10 61.10 0.00 1252.60 956.70 295.90
5 64.00 64.00 0.00 1252.70 956.70 296.00
6 88.30 88.30 0.00 1252.80 958.40 294.40
7 97.30 97.30 0.00 1252.90 959.80 293.10
8 86.70 86.70 0.00 1253.00 959.10 293.90
9 78.40 78.40 0.00 1253.10 958.20 294.90
10 72.70 72.70 0.00 1253.20 957.60 295.60
11 78.30 78.30 0.00 1253.20 958.20 295.00
12 73.80 73.80 0.00 1253.20 958.00 295.20
13 93.80 93.80 0.00 1253.20 959.20 294.00
14 93.80 93.80 0.00 1253.20 959.80 293.40
15 90.30 90.30 0.00 1253.40 959.70 293.70
16 91.20 91.20 0.00 1253.50 959.60 293.90
17 100.60 100.60 0.00 1253.50 960.50 293.00
18 108.40 108.40 0.00 1253.60 961.10 292.50
19 138.40 138.40 0.00 1253.50 963.40 290.10
20 156.40 156.40 0.00 1253.40 965.60 287.80
21 160.80 160.80 0.00 1253.40 966.40 287.00
22 150.50 150.50 0.00 1253.50 965.90 287.60
23 134.60 134.60 0.00 1253.60 964.60 289.00
24 112.70 112.70 0.00 1253.70 962.60 291.10
AVG 97.15 97.15 0.00 1253.16 960.23 292.93
MAX 160.80 160.80 0.00 1253.70 966.40 296.00
MIN 55.70 55.70 0.00 1252.50 956.70 287.00