Grand Coulee Dam
July 2026
| Day of Month | Total Generation MWh | Average Generation MW | Station Use MWh | Inflow kcfs | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Midnight Reservoir Elevation | Average Forebay Elevation | Average Tailwater Elevation | Average Head feet | Banks Lake Pump kcfs | Banks Lake Pump MWh | Banks 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 | | | | 153.10 | 131.10 | 131.00 | 0.10 | 1286.10 | 1285.87 | 963.70 | 322.17 | | | 1568.78 |
| 3 | | | | 148.90 | 130.90 | 130.80 | 0.10 | 1286.30 | 1286.25 | 964.17 | 322.08 | | | 1569.00 |
| 4 | | | | 145.10 | 118.90 | 118.80 | 0.10 | 1286.60 | 1286.51 | 963.03 | 323.48 | | | 1569.36 |
| 5 | | | | 144.30 | 114.00 | 113.90 | 0.10 | 1287.10 | 1286.88 | 962.61 | 324.27 | | | 1569.65 |
| 6 | | | | 137.60 | 96.00 | 96.00 | 0.10 | 1287.90 | 1287.59 | 960.48 | 327.11 | | | 1569.58 |
| 7 | | | | 132.90 | 99.00 | 98.90 | 0.10 | 1288.50 | 1288.30 | 960.22 | 328.08 | | | 1569.57 |
| 8 | | | | 118.70 | 97.60 | 97.50 | 0.10 | 1288.90 | 1288.84 | 960.60 | 328.24 | | | 1569.45 |
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| TOT | 80138 | | 203 | | | | | | | | | | | |
| AVG | 80138 | 3339 | 203 | 140.65 | 115.41 | 115.32 | 0.10 | 1287.14 | 1286.98 | 962.39 | 324.59 | 7.63 | 5239 | 1569.28 |
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| MAX | 80138 | | | 153.10 | 135.80 | 135.70 | 0.10 | 1288.90 | 1288.84 | 964.28 | 328.24 | 7.63 | 5239 | 1569.65 |
| MIN | 80138 | | | 118.70 | 96.00 | 96.00 | 0.10 | 1285.70 | 1285.60 | 960.22 | 321.32 | 7.63 | 5239 | 1568.78 |