US Army Corps of Engineers

Grand Coulee Dam

July 2026

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 80138 3339 203 144.60 135.80 135.70 0.10 1285.70 1285.60 964.28 321.32 7.63 5239 1568.86
2 78268 3261 199 153.10 131.10 131.00 0.10 1286.10 1285.87 963.70 322.17 7.19 4851 1568.78
3 77872 3245 201 148.90 130.90 130.80 0.10 1286.30 1286.25 964.17 322.08 11.30 7574 1569.00
4 71136 2964 209 145.10 118.90 118.80 0.10 1286.60 1286.51 963.03 323.48 12.51 8350 1569.36
5 68246 2844 209 144.30 114.00 113.90 0.10 1287.10 1286.88 962.61 324.27 12.57 8351 1569.65
6 56771 2365 246 137.60 96.00 96.00 0.10 1287.90 1287.59 960.48 327.11 6.98 4767 1569.58
7 57429 2393 252 132.90 99.00 98.90 0.10 1288.50 1288.30 960.22 328.08 7.72 5221 1569.57
8 58392 2433 241 118.70 97.60 97.50 0.10 1288.90 1288.84 960.60 328.24 6.80 4632 1569.45
9 64777 2699 192 123.20 109.00 108.90 0.10 1289.10 1289.11 961.06 328.05 6.80 4632 1569.32
10 67746 2823 171 123.50 114.50 114.40 0.10 1289.10 1289.21 962.17 327.04 6.97 4746 1569.20
11 66120 2755 173 110.90 110.90 110.80 0.10 1288.90 1289.15 962.00 327.15 8.70 5901 1569.22
12 56786 2366 176 105.90 94.90 94.90 0.10 1288.90 1288.98 960.20 328.78 10.15 6830 1569.31
13 69070 2878 172 104.40 115.80 115.80 0.10 1288.50 1288.74 962.25 326.49 7.87 5327 1569.27
14 54661 2278 178 101.90 92.40 92.40 0.10 1288.50 1288.55 960.01 328.54 8.22 5542 1569.26
15 56629 2360 174 104.20 97.40 97.30 0.10 1288.50 1288.56 960.65 327.91 6.80 4632 1569.11
16 45339 1889 166 89.20 75.80 75.70 0.10 1288.70 1288.57 958.96 329.61 6.80 4632 1569.01
17 51735 2156 161 97.40 85.80 85.70 0.10 1288.80 1288.76 959.62 329.14 7.13 4850 1568.94
18 49749 2073 155 87.70 83.50 83.40 0.10 1288.60 1288.69 959.43 329.26 10.80 7232 1568.09
19 52878 2203 155 93.30 89.30 89.20 0.10 1288.40 1288.58 959.63 328.95 12.60 8352 1569.37
20 51565 2149 167 95.20 88.40 88.30 0.10 1288.50 1288.46 958.98 329.48 3.49 2303 1569.04
21 58827 2451 167 92.90 101.10 101.00 0.10 1288.20 1288.42 960.31 328.11 4.10 2715 1568.73
22 61239 2552 165 98.00 104.90 104.80 0.10 1287.90 1288.07 961.03 327.04 4.12 2729 1568.44
23 55496 2312 164 95.40 96.00 95.90 0.10 1287.80 1287.90 959.74 328.16 4.33 2840 1568.17
24 66251 2760 151 92.00 113.40 113.30 0.10 1287.00 1287.50 960.91 326.59 8.73 5871 1568.20
25 50093 2087 188 84.00 88.00 87.90 0.10 1286.60 1286.83 959.39 327.44 12.60 8352 1568.55
26 50817 2117 172 95.30 88.80 88.70 0.10 1286.50 1286.63 959.80 326.83 12.60 8352 1568.82
27 56847 2369 173 92.40 97.20 97.10 0.10 1286.20 1286.37 960.50 325.87 8.49 5764 1568.89
28 55665 2319 174 84.60 95.80 95.70 0.10 1285.70 1285.89 960.15 325.74 7.99 5462 1568.91
29 54216 2259 172 92.80 93.70 93.60 0.10 1285.50 1285.69 960.08 325.61 5.82 3911 1568.74
30 53373 2224 180 89.30 93.00 92.90 0.10 1285.30 1285.45 959.91 325.54 5.83 3917 1568.58
31 99.00 118.90 118.80 0.10 1284.60 1285.01 962.16 322.85 1568.41
TOT1798131  5506           
AVG 59938 2497 184 108.96 102.32 102.23 0.10 1287.51 1287.58 960.90 326.68 8.12 5463 1568.96
MAX 80138   153.10 135.80 135.70 0.10 1289.10 1289.21 964.28 329.61 12.60 8352 1569.65
MIN 45339   84.00 75.80 75.70 0.10 1284.60 1285.01 958.96 321.32 3.49 2303 1568.09
BUILDING STRONG®