US Army Corps of Engineers

Grand Coulee Dam

April 2020

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 43208 1800 144 62.50 79.90 79.90 0.00 1252.90 1253.05 959.49 293.56 4.36 3172 1568.69
2 32869 1370 144 44.20 60.40 60.40 0.00 1252.30 1252.40 958.53 293.87 2.50 1809 1568.53
3 32801 1367 144 59.10 60.30 60.30 0.00 1252.20 1252.30 957.94 294.36 2.16 1567 1568.27
4 34334 1431 144 48.50 63.10 63.10 0.00 1251.50 1251.82 957.51 294.31 7.80 5094 1568.40
5 25860 1078 144 57.40 47.70 47.70 0.00 1251.50 1251.43 956.35 295.08 12.33 9041 1568.81
6 31172 1299 144 51.60 57.60 57.60 0.00 1251.20 1251.23 956.78 294.45 4.11 3007 1568.82
7 34883 1453 144 57.20 64.70 64.70 0.00 1250.60 1250.79 957.37 293.42 9.76 7195 1568.96
8 31693 1321 144 58.60 58.70 58.70 0.00 1250.50 1250.48 957.24 293.24 5.45 3992 1568.82
9 31569 1315 144 58.90 58.40 58.40 0.00 1250.30 1250.30 957.68 292.62 4.05 2981 1568.56
10 30293 1262 144 52.80 56.30 56.30 0.00 1249.90 1250.01 957.31 292.70 12.30 9050 1568.99
11 27115 1130 144 58.80 50.00 50.00 0.00 1249.70 1249.85 956.15 293.70 12.30 9048 1569.30
12 31707 1321 144 65.00 58.60 58.60 0.00 1249.70 1249.62 957.19 292.43 9.02 6708 1569.43
13 35383 1474 144 65.20 65.30 65.30 0.00 1249.50 1249.52 957.40 292.12 4.07 3010 1569.20
14 36293 1512 144 66.80 67.30 67.30 0.00 1249.40 1249.51 957.66 291.85 4.05 2996 1568.98
15 45885 1912 144 70.70 85.90 85.90 0.00 1248.80 1249.11 959.58 289.53 4.26 3152 1568.82
16 50412 2100 144 74.40 95.60 95.60 0.00 1248.00 1248.36 960.65 287.71 4.27 3157 1568.55
17 50306 2096 144 81.30 100.10 100.10 0.00 1247.30 1247.46 961.07 286.39 3.79 2803 1568.32
18 35560 1482 144 87.50 75.10 75.10 0.00 1247.30 1247.18 958.30 288.88 12.10 9000 1568.66
19 38157 1590 144 72.10 80.80 80.80 0.00 1246.90 1247.02 958.35 288.67 12.10 9000 1569.01
20 43575 1816 144 83.00 89.00 89.00 0.00 1246.60 1246.59 959.50 287.09 4.03 2999 1568.78
21 37748 1573 144 90.70 79.70 79.70 0.00 1246.70 1246.62 958.25 288.37 8.83 6551 1568.91
22 54489 2270 144 98.80 110.20 110.20 0.00 1246.20 1246.38 961.26 285.12 4.11 2987 1568.68
23 45332 1889 144 93.20 88.20 88.20 0.00 1246.20 1246.13 959.89 286.24 3.74 2763 1568.47
24 40818 1701 144 100.60 79.10 79.10 0.00 1246.90 1246.47 959.15 287.32 4.08 3021 1568.24
25 26977 1124 144 114.50 53.90 53.90 0.00 1248.40 1247.64 956.98 290.66 10.60 7852 1568.53
26 56467 2353 144 106.10 109.50 109.50 0.00 1247.90 1248.17 961.55 286.62 10.60 7866 1568.71
27 47786 1991 144 122.70 92.30 92.30 0.00 1248.60 1248.18 960.28 287.90 10.60 7862 1569.00
28 59362 2473 144 119.40 113.50 113.50 0.00 1248.60 1248.52 962.07 286.45 3.77 2791 1568.70
29 64420 2684 144 123.20 122.20 122.20 0.00 1248.50 1248.57 962.81 285.76 4.11 3040 1568.48
30 55084 2295 144 124.30 103.80 103.80 0.00 1249.10 1248.73 961.43 287.30 3.30 2440 1568.20
TOT1211558  4320           
AVG 40385 1683 144 78.97 77.57 77.57 0.00 1249.11 1249.11 958.86 290.26 6.62 4865 1568.73
MAX 64420   124.30 122.20 122.20 0.00 1252.90 1253.05 962.81 295.08 12.33 9050 1569.43
MIN 25860   44.20 47.70 47.70 0.00 1246.20 1246.13 956.15 285.12 2.16 1567 1568.20