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 67874 2828 195 140.10 126.80 126.80 0.00 1253.50 1253.38 963.28 290.10 3.06 2240 1568.07
18 68462 2853 199 135.60 129.00 129.00 0.00 1253.40 1253.51 963.13 290.38 9.55 6935 1568.14
19 68701 2863 200 147.40 130.60 130.60 0.00 1253.60 1253.62 963.81 289.81 8.84 6604 1568.17
20 73386 3058 195 139.80 137.70 137.70 0.00 1253.50 1253.73 963.76 289.97 5.32 4054 1568.05
21 76999 3208 194 147.30 145.70 145.70 0.00 1253.20 1253.39 965.01 288.38 11.88 8865 1568.43
22 77665 3236 192 150.70 146.90 146.90 0.00 1252.90 1253.11 965.40 287.71 13.70 10231 1568.84
23 75293 3137 193 149.70 142.10 142.10 0.00 1253.10 1253.00 964.85 288.15 3.94 2883 1568.76
24 85247 3552 194 151.70 161.70 161.70 0.00 1252.60 1252.96 966.68 286.28 3.79 2597 1568.39
25 77091 3212 204 148.90 145.90 145.90 0.00 1252.60 1252.70 964.89 287.81 3.04 2215 1568.05
26 79096 3296 213 143.10 149.40 149.40 0.00 1252.40 1252.53 964.99 287.54 2.70 1973 1567.63
27 76381 3183 195 149.10 144.40 144.40 0.00 1252.20 1252.30 964.50 287.80 11.00 8045 1567.79
28 78749 3281 195 161.50 149.10 149.10 0.00 1252.10 1252.14 965.70 286.44 13.70 10224 1568.22
29 62765 2615 201 168.30 117.50 117.50 0.00 1253.30 1252.70 962.41 290.29 13.70 10225 1568.74
30 76829 3201 202 171.10 143.90 143.90 0.00 1253.80 1253.70 965.04 288.66 8.35 6395 1568.98
31 82691 3445 206 179.70 152.10 152.10 0.00 1254.60 1254.19 966.30 287.89 3.74 2785 1568.83
TOT2032198  6044           
AVG 65555 2731 195 135.83 123.40 123.40 0.00 1252.53 1252.48 962.88 289.60 6.97 5133 1568.38
MAX 85247   179.70 161.70 161.70 0.00 1254.60 1254.34 966.68 294.70 13.70 10231 1569.18
MIN 27468   85.60 52.40 52.40 0.00 1249.10 1249.17 956.78 286.28 2.70 1973 1567.63