Wanapum Dam
Friday July 31, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
| 1 | 99.90 | 78.96 | 18.95 | 568.84 | 489.27 | 79.57 |
| 2 | 83.90 | 62.85 | 19.02 | 568.76 | 488.71 | 80.05 |
| 3 | 99.00 | 78.18 | 18.78 | 568.53 | 489.37 | 79.16 |
| 4 | 78.40 | 57.56 | 18.85 | 568.54 | 488.39 | 80.14 |
| 5 | 75.70 | 54.94 | 18.75 | 568.34 | 488.47 | 79.87 |
| 6 | 91.10 | 70.64 | 18.42 | 567.82 | 489.23 | 78.59 |
| 7 | 93.00 | 72.65 | 18.35 | 567.88 | 488.86 | 79.02 |
| 8 | 92.60 | 72.25 | 18.38 | 568.08 | 488.86 | 79.22 |
| 9 | 96.50 | 76.08 | 18.41 | 568.31 | 489.26 | 79.05 |
| 10 | 110.30 | 89.72 | 18.56 | 568.05 | 489.94 | 78.11 |
| 11 | 116.70 | 96.15 | 18.54 | 568.35 | 490.46 | 77.89 |
| 12 | 114.80 | 94.04 | 18.77 | 568.26 | 490.25 | 78.01 |
| 13 | 113.50 | 93.12 | 18.40 | 568.04 | 490.11 | 77.93 |
| 14 | 117.50 | 97.19 | 18.34 | 567.72 | 490.50 | 77.22 |
| 15 | 137.10 | 117.00 | 18.08 | 567.09 | 491.49 | 75.60 |
| 16 | 133.80 | 114.04 | 17.73 | 567.31 | 491.09 | 76.22 |
| 17 | 128.90 | 108.89 | 18.00 | 567.64 | 491.06 | 76.58 |
| 18 | 137.70 | 117.53 | 18.16 | 567.52 | 491.65 | 75.87 |
| 19 | 149.60 | 129.50 | 18.13 | 567.73 | 491.93 | 75.81 |
| 20 | 156.30 | 136.14 | 18.21 | 567.78 | 492.21 | 75.56 |
| 21 | 141.20 | 120.92 | 18.29 | 567.87 | 491.32 | 76.55 |
| 22 | 115.00 | 94.56 | 18.44 | 568.20 | 490.12 | 78.08 |
| 23 | 136.40 | 115.86 | 18.56 | 568.40 | 491.17 | 77.24 |
| 24 | 131.70 | 110.95 | 18.74 | 568.63 | 491.03 | 77.60 |
|
| AVG | 114.61 | 94.16 | 18.45 | 568.07 | 490.20 | 77.87 |
|
| MAX | 156.30 | 136.14 | 19.02 | 568.84 | 492.21 | 80.14 |
| MIN | 75.70 | 54.94 | 17.73 | 567.09 | 488.39 | 75.56 |