US Army Corps of Engineers

Grand Coulee Dam

October 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 28398 1183 191 73.00 48.90 48.90 0.00 1285.00 1284.65 956.73 327.92 2.99 1989 1568.07
2 35390 1475 176 69.50 59.30 59.30 0.00 1285.10 1285.02 957.21 327.81 3.00 1993 1567.93
3 30660 1278 179 71.20 51.50 51.50 0.00 1285.50 1285.24 956.33 328.91 3.33 2215 1567.87
4 25466 1061 190 61.90 42.90 42.90 0.00 1285.80 1285.68 956.05 329.63 9.00 6006 1568.05
5 27623 1151 192 66.80 46.80 46.80 0.00 1286.10 1285.90 956.36 329.54 8.71 5795 1568.44
6 42275 1761 216 65.20 71.30 71.30 0.00 1285.90 1285.94 957.88 328.06 1.99 1279 1568.29
7 40988 1708 208 66.50 69.70 69.70 0.00 1285.70 1285.78 957.65 328.13 2.40 1639 1568.07
8 43916 1830 233 65.90 73.20 73.20 0.00 1285.50 1285.62 958.53 327.09 3.09 2063 1567.91
9 42761 1782 265 68.30 71.70 71.70 0.00 1285.30 1285.39 958.77 326.62 2.66 1783 1567.74
10 67.10 55.70 55.70 0.00 1285.40 1285.33 957.03 328.30 1567.96
11 62.10 47.90 47.90 0.00 1285.50 1285.40 955.99 329.41 1568.22
12 76.40 57.80 57.80 0.00 1285.80 1285.65 956.59 329.06 1568.51
13 70.50 75.50 75.50 0.00 1285.50 1285.66 958.03 327.63 1568.53
14 73.10 75.30 75.30 0.00 1285.40 1285.40 958.60 326.80 1568.36
15 66.00 73.40 73.40 0.00 1285.20 1285.15 958.43 326.72 1568.20
16 68.10 67.90 67.90 0.00 1285.10 1284.99 957.67 327.32 1568.02
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TOT317477  1850           
AVG 35275 1470 206 68.22 61.80 61.80 0.00 1285.49 1285.43 957.37 328.06 4.13 2751 1568.14
MAX 43916   76.40 75.50 75.50 0.00 1286.10 1285.94 958.77 329.63 9.00 6006 1568.53
MIN 25466   61.90 42.90 42.90 0.00 1285.00 1284.65 955.99 326.62 1.99 1279 1567.74