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 | 68397 | 2850 | 188 | 93.50 | 125.10 | 125.10 | 0.00 | 1259.30 | 1259.66 | 963.23 | 296.43 | 0.37 | 285 | 1568.68 |
| 7 | 55946 | 2331 | 190 | 96.50 | 102.10 | 102.10 | 0.00 | 1259.00 | 1259.13 | 960.39 | 298.74 | 4.40 | 3384 | 1569.00 |
| 8 | 55112 | 2296 | 181 | 96.70 | 106.20 | 106.20 | 0.00 | 1258.60 | 1258.75 | 960.98 | 297.77 | 4.40 | 3243 | 1569.25 |
| 9 | 69273 | 2886 | 192 | 99.80 | 127.40 | 127.40 | 0.00 | 1257.60 | 1258.06 | 963.12 | 294.94 | 1.07 | 826 | 1569.26 |
| 10 | 67690 | 2820 | 185 | 92.00 | 125.50 | 125.50 | 0.00 | 1256.60 | 1257.02 | 963.14 | 293.88 | 0.00 | 0 | 1569.20 |
| 11 | 68712 | 2863 | 189 | 90.20 | 127.80 | 127.80 | 0.00 | 1255.50 | 1256.10 | 962.94 | 293.16 | 0.00 | 0 | 1569.36 |
| 12 | 66280 | 2762 | 186 | 104.30 | 122.70 | 122.70 | 0.00 | 1254.90 | 1255.31 | 962.60 | 292.71 | 0.00 | 0 | 1569.09 |
| 13 | 74179 | 3091 | 177 | 105.50 | 138.70 | 138.70 | 0.00 | 1254.00 | 1254.41 | 964.26 | 290.15 | 0.00 | 0 | 1569.10 |
| 14 | 59669 | 2486 | 191 | 97.50 | 111.70 | 111.70 | 0.00 | 1253.60 | 1253.67 | 961.44 | 292.23 | 0.00 | 0 | 1569.09 |
| 15 | 63601 | 2650 | 187 | 101.80 | 119.00 | 119.00 | 0.00 | 1252.90 | 1253.24 | 961.73 | 291.51 | 2.88 | 2167 | 1569.25 |
| 16 | 58337 | 2431 | 177 | 102.30 | 108.60 | 108.60 | 0.00 | 1252.80 | 1252.78 | 961.56 | 291.22 | 0.58 | 440 | 1569.30 |
| 17 | 56798 | 2367 | 167 | 103.40 | 106.10 | 106.10 | 0.00 | 1252.70 | 1252.73 | 961.35 | 291.38 | 0.00 | 0 | 1569.31 |
| 18 | 55871 | 2328 | 174 | 103.40 | 104.40 | 104.40 | 0.00 | 1252.62 | 1252.69 | 961.12 | 291.57 | 0.00 | 0 | 1569.24 |
| 19 | | | | 97.70 | 114.10 | 114.10 | 0.00 | 1252.20 | 1252.40 | 962.23 | 290.17 | | | 1569.13 |
| 20 | | | | 113.10 | 121.90 | 121.90 | 0.00 | 1251.80 | 1251.96 | 962.96 | 289.00 | | | 1569.09 |
| 21 | | | | 113.90 | 108.50 | 108.50 | 0.00 | 1252.00 | 1251.82 | 961.38 | 290.44 | | | 1569.09 |
| 22 | | | | 126.90 | 127.40 | 127.40 | 0.00 | 1251.90 | 1251.93 | 961.13 | 290.80 | | | 1569.30 |
| 23 | | | | 131.80 | 135.90 | 135.90 | 0.00 | 1251.60 | 1251.73 | 964.08 | 287.65 | | | 1569.43 |
| 24 | | | | 124.30 | 115.60 | 115.60 | 0.00 | 1251.70 | 1251.74 | 962.09 | 289.65 | | | 1569.42 |
| 25 | | | | 119.30 | 129.60 | 129.60 | 0.00 | 1251.40 | 1251.53 | 963.20 | 288.33 | | | 1569.41 |
| 26 | | | | | | | | 1251.70 | | | | | | |
| 27 | | | | | | | | | | | | | | |
| 28 | | | | | | | | | | | | | | |
| 29 | | | | | | | | | | | | | | |
| 30 | | | | | | | | | | | | | | |
| 31 | | | | | | | | | | | | | | |
|
| TOT | 1071564 | | 3199 | | | | | | | | | | | |
| AVG | 63033 | 2626 | 188 | 103.60 | 118.31 | 118.31 | 0.00 | 1255.48 | 1255.55 | 962.24 | 293.31 | 0.81 | 611 | 1569.14 |
|
| MAX | 74179 | | | 131.80 | 138.70 | 138.70 | 0.00 | 1262.70 | 1262.40 | 964.26 | 301.37 | 4.40 | 3384 | 1569.43 |
| MIN | 55112 | | | 90.20 | 101.30 | 101.30 | 0.00 | 1251.40 | 1251.53 | 960.39 | 287.65 | 0.00 | 0 | 1568.68 |