Grand Coulee Dam
March 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 | | | | | | | | 1262.70 | | | | | | |
| 2 | 55165 | 2299 | 216 | 91.20 | 101.30 | 101.30 | 0.00 | 1262.40 | 1262.40 | 961.03 | 301.37 | 0.00 | 0 | 1568.94 |
| 3 | 63898 | 2662 | 208 | 90.90 | 117.40 | 117.40 | 0.00 | 1261.70 | 1262.11 | 962.20 | 299.91 | 0.00 | 0 | 1568.89 |
| 4 | 65003 | 2708 | 198 | 95.40 | 117.90 | 117.90 | 0.00 | 1261.00 | 1261.38 | 962.37 | 299.01 | 0.07 | 48 | 1568.83 |
| 5 | 67633 | 2818 | 193 | 95.10 | 124.50 | 124.50 | 0.00 | 1260.20 | 1260.55 | 963.24 | 297.31 | 0.00 | 0 | 1568.76 |
| 6 | | | | 93.50 | 125.10 | 125.10 | 0.00 | 1259.30 | 1259.66 | 963.23 | 296.43 | | | 1568.68 |
| 7 | | | | 96.50 | 102.10 | 102.10 | 0.00 | 1259.00 | 1259.13 | 960.39 | 298.74 | | | 1569.00 |
| 8 | | | | 96.70 | 106.20 | 106.20 | 0.00 | 1258.60 | 1258.75 | 960.98 | 297.77 | | | 1569.25 |
| 9 | | | | 99.80 | 127.40 | 127.40 | 0.00 | 1257.60 | 1258.06 | 963.12 | 294.94 | | | 1569.26 |
| 10 | | | | 92.00 | 125.50 | 125.50 | 0.00 | 1256.60 | 1257.02 | 963.14 | 293.88 | | | 1569.20 |
| 11 | | | | 90.20 | 127.80 | 127.80 | 0.00 | 1255.50 | 1256.10 | 962.94 | 293.16 | | | 1569.36 |
| 12 | | | | | | | | 1254.90 | | | | | | |
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| TOT | 251699 | | 815 | | | | | | | | | | | |
| AVG | 62925 | 2622 | 204 | 94.13 | 117.52 | 117.52 | 0.00 | 1259.12 | 1259.52 | 962.26 | 297.25 | 0.02 | 12 | 1569.02 |
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| MAX | 67633 | | | 99.80 | 127.80 | 127.80 | 0.00 | 1262.70 | 1262.40 | 963.24 | 301.37 | 0.07 | 48 | 1569.36 |
| MIN | 55165 | | | 90.20 | 101.30 | 101.30 | 0.00 | 1254.90 | 1256.10 | 960.39 | 293.16 | 0.00 | 0 | 1568.68 |