Wanapum Dam
Friday September 18, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 33.00 | 29.79 | 1.20 | 567.13 | 485.85 | 81.28 |
| 2 | 30.90 | 27.80 | 1.14 | 567.15 | 485.53 | 81.62 |
| 3 | 33.60 | 30.43 | 1.18 | 567.32 | 485.98 | 81.33 |
| 4 | 39.10 | 35.94 | 1.14 | 566.85 | 485.90 | 80.95 |
| 5 | 35.80 | 32.74 | 1.04 | 566.79 | 485.83 | 80.96 |
| 6 | 44.60 | 41.58 | 1.05 | 566.75 | 486.62 | 80.12 |
| 7 | 69.30 | 66.35 | 0.97 | 566.31 | 487.81 | 78.51 |
| 8 | 52.80 | 49.91 | 0.94 | 566.64 | 486.47 | 80.17 |
| 9 | 48.90 | 45.91 | 1.02 | 566.79 | 486.76 | 80.04 |
| 10 | 48.10 | 45.05 | 1.00 | 566.53 | 486.51 | 80.02 |
| 11 | 46.00 | 43.02 | 0.99 | 566.74 | 486.50 | 80.24 |
| 12 | 46.10 | 43.09 | 1.02 | 566.60 | 486.52 | 80.08 |
| 13 | 47.60 | 44.63 | 0.97 | 566.49 | 486.68 | 79.81 |
| 14 | 50.80 | 47.83 | 0.98 | 566.71 | 486.80 | 79.91 |
| 15 | 59.10 | 56.12 | 1.03 | 566.72 | 487.30 | 79.42 |
| 16 | 65.00 | 62.02 | 1.01 | 566.62 | 487.54 | 79.08 |
| 17 | 77.60 | 74.66 | 0.98 | 566.59 | 488.50 | 78.09 |
| 18 | 88.40 | 85.46 | 0.91 | 566.12 | 488.87 | 77.25 |
| 19 | 87.50 | 84.65 | 0.87 | 566.09 | 488.51 | 77.58 |
| 20 | 75.30 | 72.39 | 0.86 | 566.35 | 487.98 | 78.37 |
| 21 | 84.90 | 81.98 | 0.88 | 566.07 | 488.61 | 77.46 |
| 22 | 74.90 | 72.05 | 0.85 | 566.12 | 487.81 | 78.31 |
| 23 | 45.90 | 42.95 | 0.94 | 566.71 | 486.26 | 80.45 |
| 24 | 47.70 | 44.70 | 1.03 | 566.72 | 486.62 | 80.10 |
|
| AVG | 55.54 | 52.54 | 1.00 | 566.62 | 486.99 | 79.63 |
|
| MAX | 88.40 | 85.46 | 1.20 | 567.32 | 488.87 | 81.62 |
| MIN | 30.90 | 27.80 | 0.85 | 566.07 | 485.53 | 77.25 |