Grand Coulee Dam
April 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 | 61450 | 2560 | 190 | 117.50 | 114.90 | 114.90 | 0.00 | 1251.20 | 1251.21 | 962.70 | 288.51 | 4.50 | 3360 | 1568.97 |
| 2 | 48706 | 2029 | 174 | 119.20 | 95.00 | 95.00 | 0.00 | 1251.80 | 1251.41 | 961.17 | 290.24 | 4.64 | 3456 | 1568.96 |
| 3 | 57189 | 2383 | 174 | 118.50 | 108.50 | 108.50 | 0.00 | 1252.00 | 1251.87 | 960.78 | 291.09 | 4.50 | 3360 | 1568.90 |
| 4 | 56198 | 2342 | 189 | 119.20 | 109.20 | 109.20 | 0.00 | 1252.20 | 1251.86 | 961.92 | 289.94 | 4.50 | 3360 | 1568.85 |
| 5 | 54854 | 2286 | 190 | 114.80 | 104.10 | 104.10 | 0.00 | 1252.30 | 1252.16 | 961.11 | 291.05 | 4.50 | 3360 | 1568.79 |
| 6 | 54807 | 2284 | 191 | 113.60 | 105.10 | 105.10 | 0.00 | 1252.50 | 1252.31 | 961.15 | 291.16 | 2.30 | 1707 | 1568.60 |
| 7 | 43778 | 1824 | 201 | 112.20 | 85.60 | 85.60 | 0.00 | 1253.30 | 1252.81 | 959.44 | 293.37 | 1.66 | 1176 | 1568.15 |
| 8 | 52886 | 2204 | 186 | 113.30 | 99.70 | 99.70 | 0.00 | 1253.60 | 1253.28 | 961.30 | 291.98 | 4.97 | 3441 | 1568.00 |
| 9 | 50945 | 2123 | 183 | 109.80 | 95.60 | 95.60 | 0.00 | 1253.80 | 1253.59 | 960.90 | 292.69 | 4.62 | 3389 | 1567.83 |
| 10 | 59978 | 2499 | 187 | 110.70 | 112.20 | 112.20 | 0.00 | 1253.70 | 1253.63 | 962.20 | 291.43 | 4.81 | 3599 | 1567.70 |
| 11 | 60774 | 2532 | 191 | 121.10 | 113.60 | 113.60 | 0.00 | 1253.60 | 1253.57 | 962.00 | 291.57 | 9.10 | 6768 | 1567.89 |
| 12 | 69025 | 2876 | 193 | 117.70 | 129.40 | 129.40 | 0.00 | 1253.00 | 1253.16 | 963.65 | 289.51 | 9.10 | 6767 | 1568.11 |
| 13 | | | | 120.80 | 106.80 | 106.80 | 0.00 | 1253.10 | 1252.92 | 961.39 | 291.53 | | | 1568.31 |
| 14 | | | | 122.00 | 109.70 | 109.70 | 0.00 | 1253.20 | 1253.13 | 961.45 | 291.68 | | | 1568.56 |
| 15 | | | | 124.80 | 107.50 | 107.50 | 0.00 | 1253.50 | 1253.26 | 961.05 | 292.21 | | | 1568.64 |
| 16 | | | | 117.90 | 101.30 | 101.30 | 0.00 | 1253.70 | 1253.46 | 961.25 | 292.21 | | | 1568.77 |
| 17 | | | | 122.90 | 119.80 | 119.80 | 0.00 | 1253.50 | 1253.58 | 962.84 | 290.74 | | | 1568.93 |
| 18 | | | | 121.00 | 96.80 | 96.80 | 0.00 | 1254.00 | 1253.49 | 960.66 | 292.83 | | | 1569.08 |
| 19 | | | | 125.10 | 140.20 | 140.20 | 0.00 | 1253.30 | 1253.68 | 964.26 | 289.42 | | | 1569.22 |
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| TOT | 670590 | | 2249 | | | | | | | | | | | |
| AVG | 55882 | 2328 | 187 | 118.01 | 108.16 | 108.16 | 0.00 | 1253.02 | 1252.86 | 961.64 | 291.22 | 4.93 | 3645 | 1568.54 |
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| MAX | 69025 | | | 125.10 | 140.20 | 140.20 | 0.00 | 1254.00 | 1253.68 | 964.26 | 293.37 | 9.10 | 6768 | 1569.22 |
| MIN | 43778 | | | 109.80 | 85.60 | 85.60 | 0.00 | 1251.20 | 1251.21 | 959.44 | 288.51 | 1.66 | 1176 | 1567.70 |