Wanapum Dam
Sunday September 20, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 44.60 | 41.49 | 1.12 | 567.04 | 486.75 | 80.28 |
| 2 | 39.40 | 36.30 | 1.13 | 567.18 | 486.25 | 80.93 |
| 3 | 23.60 | 20.47 | 1.14 | 567.22 | 485.70 | 81.51 |
| 4 | 22.30 | 19.11 | 1.16 | 567.07 | 485.70 | 81.37 |
| 5 | 22.60 | 19.49 | 1.12 | 567.04 | 485.38 | 81.66 |
| 6 | 27.70 | 24.59 | 1.12 | 567.04 | 485.84 | 81.21 |
| 7 | 39.00 | 35.92 | 1.10 | 566.89 | 485.87 | 81.03 |
| 8 | 29.70 | 26.59 | 1.09 | 567.03 | 485.29 | 81.74 |
| 9 | 31.70 | 28.61 | 1.14 | 567.14 | 485.56 | 81.58 |
| 10 | 36.70 | 33.57 | 1.13 | 566.94 | 485.49 | 81.45 |
| 11 | 46.60 | 43.47 | 1.10 | 567.03 | 486.01 | 81.02 |
| 12 | 40.80 | 37.68 | 1.13 | 567.06 | 485.62 | 81.44 |
| 13 | 41.20 | 38.15 | 1.10 | 566.85 | 485.77 | 81.08 |
| 14 | 50.70 | 47.69 | 1.05 | 566.87 | 486.31 | 80.56 |
| 15 | 38.60 | 35.51 | 1.08 | 566.89 | 485.55 | 81.34 |
| 16 | 53.20 | 50.18 | 1.05 | 566.75 | 486.51 | 80.24 |
| 17 | 45.30 | 42.26 | 1.07 | 566.99 | 486.05 | 80.94 |
| 18 | 76.40 | 73.29 | 1.07 | 566.70 | 488.65 | 78.05 |
| 19 | 100.90 | 97.88 | 0.99 | 566.53 | 489.24 | 77.29 |
| 20 | 91.30 | 88.32 | 0.96 | 566.56 | 488.88 | 77.68 |
| 21 | 67.80 | 64.79 | 0.98 | 566.60 | 487.63 | 78.97 |
| 22 | 54.50 | 51.56 | 0.99 | 566.68 | 487.00 | 79.68 |
| 23 | 37.70 | 34.70 | 1.05 | 566.93 | 486.18 | 80.75 |
| 24 | 36.20 | 33.13 | 1.10 | 566.90 | 486.39 | 80.52 |
|
| AVG | 45.77 | 42.70 | 1.08 | 566.91 | 486.40 | 80.51 |
|
| MAX | 100.90 | 97.88 | 1.16 | 567.22 | 489.24 | 81.74 |
| MIN | 22.30 | 19.11 | 0.96 | 566.53 | 485.29 | 77.29 |