US Army Corps of Engineers

Grand Coulee Dam

Friday October 17, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 38.90 38.90 0.00 1285.00 955.60 329.40
2 34.60 34.60 0.00 1285.10 955.50 329.60
3 33.00 33.00 0.00 1285.10 955.20 329.90
4 34.40 34.40 0.00 1285.20 955.20 330.00
5 33.50 33.50 0.00 1285.20 955.40 329.80
6 38.10 38.10 0.00 1285.20 955.50 329.70
7 54.10 54.10 0.00 1285.20 956.60 328.60
8 53.90 53.90 0.00 1285.20 956.80 328.40
9 50.40 50.40 0.00 1285.20 956.40 328.80
10 42.90 42.90 0.00 1285.30 955.60 329.70
11 32.30 32.30 0.00 1285.30 954.80 330.50
12 34.20 34.20 0.00 1285.30 954.80 330.50
13 32.70 32.70 0.00 1285.30 954.80 330.50
14 34.10 34.10 0.00 1285.30 954.90 330.40
15 28.60 28.60 0.00 1285.30 954.60 330.70
16 29.00 29.00 0.00 1285.40 954.90 330.50
17 37.50 37.50 0.00 1285.50 955.30 330.20
18 64.70 64.70 0.00 1285.50 957.40 328.10
19 63.60 63.60 0.00 1285.40 957.60 327.80
20 62.70 62.70 0.00 1285.40 957.10 328.30
21 58.30 58.30 0.00 1285.30 956.40 328.90
22 54.80 54.80 0.00 1285.40 956.20 329.20
23 49.60 49.60 0.00 1285.50 955.60 329.90
24 55.00 55.00 0.00 1285.50 955.60 329.90
AVG 43.79 43.79 0.00 1285.30 955.74 329.55
MAX 64.70 64.70 0.00 1285.50 957.60 330.70
MIN 28.60 28.60 0.00 1285.00 954.60 327.80