US Army Corps of Engineers

Grand Coulee Dam

December 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 52279 2178 201 84.40 89.20 89.20 0.00 1284.60 1284.59 959.96 324.63 0.00 0 1568.64
2 82.40 76.80 76.80 0.00 1284.80 1284.68 958.38 326.30 1568.63
3 91.70 95.10 95.10 0.00 1284.70 1284.73 960.39 324.34 1568.64
4 94.70 102.70 102.70 0.00 1284.50 1284.56 960.90 323.66 1568.64
5 85.90 117.20 117.20 0.00 1283.70 1283.94 962.22 321.72 1568.39
6 85.80 101.60 101.60 0.00 1283.20 1283.51 960.56 322.95 1568.61
7 90.10 96.40 96.40 0.00 1283.10 1283.22 960.25 322.97 1568.62
8 83.20 94.10 94.10 0.00 1282.80 1282.93 960.29 322.64 1568.64
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TOT 52279  201           
AVG 52279 2178 201 87.28 96.64 96.64 0.00 1283.92 1284.02 960.37 323.65 0.00 0 1568.60
MAX 52279   94.70 117.20 117.20 0.00 1284.80 1284.73 962.22 326.30 0.00 0 1568.64
MIN 52279   82.40 76.80 76.80 0.00 1282.80 1282.93 958.38 321.72 0.00 0 1568.39