Wanapum Dam
Tuesday September 15, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 42.80 | 39.38 | 1.43 | 568.14 | 486.38 | 81.76 |
| 2 | 41.90 | 38.50 | 1.42 | 567.95 | 486.67 | 81.28 |
| 3 | 40.30 | 36.91 | 1.41 | 568.12 | 486.51 | 81.61 |
| 4 | 38.20 | 34.76 | 1.40 | 567.88 | 486.35 | 81.53 |
| 5 | 38.30 | 34.99 | 1.36 | 567.76 | 486.45 | 81.31 |
| 6 | 53.50 | 50.14 | 1.33 | 567.72 | 487.52 | 80.19 |
| 7 | 82.30 | 79.02 | 1.29 | 567.90 | 488.61 | 79.29 |
| 8 | 69.40 | 66.00 | 1.38 | 567.73 | 487.71 | 80.02 |
| 9 | 59.60 | 56.33 | 1.28 | 567.33 | 487.40 | 79.93 |
| 10 | 57.90 | 54.72 | 1.18 | 567.32 | 487.08 | 80.23 |
| 11 | 50.60 | 47.42 | 1.21 | 567.14 | 486.72 | 80.42 |
| 12 | 47.30 | 44.15 | 1.16 | 567.16 | 486.70 | 80.46 |
| 13 | 45.80 | 42.63 | 1.19 | 567.47 | 486.40 | 81.07 |
| 14 | 43.30 | 40.07 | 1.19 | 566.93 | 486.38 | 80.55 |
| 15 | 41.40 | 38.35 | 1.09 | 567.06 | 486.36 | 80.71 |
| 16 | 68.30 | 65.18 | 1.13 | 567.15 | 488.05 | 79.10 |
| 17 | 79.10 | 75.95 | 1.11 | 566.74 | 488.45 | 78.30 |
| 18 | 90.10 | 87.16 | 0.96 | 566.39 | 489.24 | 77.14 |
| 19 | 85.40 | 82.52 | 0.92 | 566.41 | 488.51 | 77.91 |
| 20 | 77.20 | 74.26 | 0.93 | 566.17 | 488.38 | 77.79 |
| 21 | 87.90 | 84.89 | 1.02 | 567.02 | 488.90 | 78.12 |
| 22 | 68.80 | 65.60 | 1.21 | 567.42 | 487.50 | 79.91 |
| 23 | 35.00 | 31.70 | 1.27 | 567.64 | 486.21 | 81.43 |
| 24 | 37.20 | 33.87 | 1.36 | 568.01 | 486.79 | 81.21 |
|
| AVG | 57.57 | 54.35 | 1.22 | 567.36 | 487.30 | 80.05 |
|
| MAX | 90.10 | 87.16 | 1.43 | 568.14 | 489.24 | 81.76 |
| MIN | 35.00 | 31.70 | 0.92 | 566.17 | 486.21 | 77.14 |