US Army Corps of Engineers

Grand Coulee Dam

Wednesday October 15, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 57.40 57.40 0.00 1285.40 956.70 328.70
2 51.50 51.50 0.00 1285.30 956.20 329.10
3 38.30 38.30 0.00 1285.20 955.20 330.00
4 42.40 42.40 0.00 1285.20 955.40 329.80
5 67.10 67.10 0.00 1285.20 957.20 328.00
6 80.90 80.90 0.00 1285.30 958.70 326.60
7 107.20 107.20 0.00 1285.20 960.70 324.50
8 122.80 122.80 0.00 1285.10 962.30 322.80
9 111.70 111.70 0.00 1285.10 962.10 323.00
10 93.80 93.80 0.00 1285.10 960.60 324.50
11 86.60 86.60 0.00 1285.10 959.40 325.70
12 81.10 81.10 0.00 1285.10 959.20 325.90
13 63.20 63.20 0.00 1285.10 958.20 326.90
14 49.40 49.40 0.00 1285.20 956.80 328.40
15 50.00 50.00 0.00 1285.10 956.80 328.30
16 55.40 55.40 0.00 1285.10 957.10 328.00
17 63.30 63.30 0.00 1285.10 957.50 327.60
18 84.40 84.40 0.00 1285.10 958.90 326.20
19 87.80 87.80 0.00 1285.00 959.90 325.10
20 84.10 84.10 0.00 1285.10 959.60 325.50
21 81.90 81.90 0.00 1285.10 959.40 325.70
22 76.60 76.60 0.00 1285.10 958.90 326.20
23 67.90 67.90 0.00 1285.10 958.20 326.90
24 56.50 56.50 0.00 1285.20 957.30 327.90
AVG 73.39 73.39 0.00 1285.15 958.43 326.72
MAX 122.80 122.80 0.00 1285.40 962.30 330.00
MIN 38.30 38.30 0.00 1285.00 955.20 322.80