US Army Corps of Engineers

Grand Coulee Dam

May 2022

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 43455 1811 166 85.60 81.30 81.30 0.00 1249.30 1249.39 958.78 290.61 10.70 7878 1569.18
2 40705 1696 164 90.20 76.30 76.30 0.00 1249.60 1249.36 958.38 290.98 3.07 2257 1569.01
3 47318 1972 192 89.80 88.70 88.70 0.00 1249.60 1249.58 959.90 289.68 3.05 2240 1568.76
4 56636 2360 204 96.40 107.00 107.00 0.00 1249.10 1249.33 961.17 288.16 3.50 2582 1568.46
5 47708 1988 200 99.20 90.10 90.10 0.00 1249.30 1249.17 959.40 289.77 3.90 2876 1568.25
6 43636 1818 196 114.60 82.20 82.20 0.00 1250.20 1249.73 958.17 291.56 3.48 2565 1567.97
7 27468 1144 193 112.30 52.40 52.40 0.00 1251.70 1250.90 956.78 294.12 10.80 7920 1568.30
8 37041 1543 192 140.40 69.50 69.50 0.00 1253.40 1252.53 957.83 294.70 10.87 7939 1568.60
9 53757 2240 204 133.90 99.90 99.90 0.00 1254.30 1253.92 960.26 293.66 3.53 2573 1568.50
10 69620 2901 197 134.40 131.90 131.90 0.00 1254.30 1254.25 963.45 290.80 3.57 2585 1568.30
11 70148 2923 191 140.20 131.10 131.10 0.00 1254.40 1254.32 963.68 290.64 3.43 2488 1568.06
12 76148 3173 197 142.20 142.70 142.70 0.00 1254.20 1254.34 964.72 289.62 6.88 4944 1568.00
13 83277 3470 192 137.60 157.40 157.40 0.00 1253.40 1253.90 965.79 288.11 7.57 5556 1568.03
14 75795 3158 191 141.80 143.10 143.10 0.00 1253.00 1253.27 965.17 288.10 10.90 7965 1568.25
15 74346 3098 193 136.60 140.80 140.80 0.00 1252.60 1252.93 964.68 288.25 10.90 7953 1568.58
16 57911 2413 194 131.50 108.30 108.30 0.00 1253.20 1253.01 961.23 291.78 3.50 2544 1568.47
17 140.10 126.80 126.80 0.00 1253.50 1253.38 963.28 290.10 1568.07
18 135.60 129.00 129.00 0.00 1253.40 1253.51 963.13 290.38 1568.14
19 147.40 130.60 130.60 0.00 1253.60 1253.62 963.81 289.81 1568.17
20 139.80 137.70 137.70 0.00 1253.50 1253.73 963.76 289.97 1568.05
21 147.30 145.70 145.70 0.00 1253.20 1253.39 965.01 288.38 1568.43
22 150.70 146.90 146.90 0.00 1252.90 1253.11 965.40 287.71 1568.84
23 149.70 142.10 142.10 0.00 1253.10 1253.00 964.85 288.15 1568.76
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TOT904969  3066           
AVG 56561 2357 192 127.71 115.72 115.72 0.00 1252.38 1252.33 962.11 290.22 6.23 4554 1568.40
MAX 83277   150.70 157.40 157.40 0.00 1254.40 1254.34 965.79 294.70 10.90 7965 1569.18
MIN 27468   85.60 52.40 52.40 0.00 1249.10 1249.17 956.78 287.71 3.05 2240 1567.97