US Army Corps of Engineers

Grand Coulee Dam

May 2025

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feetBanks Lake Pump kcfsBanks Lake Pump MWhBanks Lake Elev
1 67963 2832 91 97.80 124.20 124.20 0.00 1263.80 1264.19 962.40 301.79 3.60 2448 1567.20
2 58933 2456 96 108.80 105.10 105.10 0.00 1263.80 1263.75 960.72 303.03 4.03 2747 1566.91
3 38310 1596 95 106.10 67.70 67.70 0.00 1264.70 1264.18 957.02 307.16 8.10 5867 1566.98
4 48706 2029 101 118.20 86.30 86.30 0.00 1265.30 1265.01 959.17 305.84 8.15 5872 1566.96
5 118.20 107.20 107.20 0.00 1265.60 1265.48 961.40 304.08 1567.04
6 120.50 114.80 114.80 0.00 1265.60 1265.59 961.99 303.60 1567.08
7 110.30 104.50 104.50 0.00 1265.50 1265.35 961.63 303.72 1567.01
8 110.10 116.00 116.00 0.00 1265.10 1265.34 961.33 304.01 1566.97
9 118.10 132.60 132.60 0.00 1264.50 1264.78 963.34 301.44 1566.99
10 116.90 99.60 99.60 0.00 1264.80 1264.69 960.15 304.54 1567.04
11 110.70 106.90 106.90 0.00 1264.60 1264.64 961.01 303.63 1567.08
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TOT213912  383           
AVG 53478 2228 96 112.34 105.90 105.90 0.00 1264.85 1264.82 960.92 303.89 5.97 4234 1567.02
MAX 67963   120.50 132.60 132.60 0.00 1265.60 1265.59 963.34 307.16 8.15 5872 1567.20
MIN 38310   97.80 67.70 67.70 0.00 1263.80 1263.75 957.02 301.44 3.60 2448 1566.91