Wanapum Dam & Lake
February 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 |
|---|
| 1 | 17513 | 730 | 25 | 116.60 | 129.30 | 127.90 | 0.00 | 569.03 | 569.66 | 491.68 | 77.98 |
| 2 | 18083 | 753 | 24 | 133.70 | 131.60 | 130.20 | 0.00 | 569.32 | 569.70 | 491.55 | 78.15 |
| 3 | 18464 | 769 | 24 | 149.10 | 135.10 | 132.60 | 1.20 | 571.23 | 570.41 | 491.87 | 78.54 |
| 4 | 19728 | 822 | 24 | 130.50 | 147.90 | 145.20 | 1.40 | 568.82 | 569.87 | 492.82 | 77.05 |
| 5 | 18069 | 753 | 26 | 126.80 | 137.30 | 135.90 | 0.00 | 567.36 | 567.57 | 492.19 | 75.38 |
| 6 | 17207 | 717 | 24 | 123.90 | 131.10 | 129.70 | 0.00 | 566.35 | 566.37 | 491.54 | 74.83 |
| 7 | 16462 | 686 | 25 | 135.30 | 120.60 | 119.20 | 0.00 | 568.40 | 568.29 | 490.76 | 77.53 |
| 8 | 15483 | 645 | 25 | 115.80 | 111.90 | 110.50 | 0.00 | 568.94 | 568.64 | 490.14 | 78.50 |
| 9 | 18014 | 751 | 25 | 131.70 | 131.50 | 130.10 | 0.00 | 568.97 | 569.84 | 491.85 | 77.99 |
| 10 | 18975 | 791 | 25 | 151.20 | 141.90 | 140.50 | 0.00 | 570.25 | 569.10 | 492.39 | 76.71 |
| 11 | 20065 | 836 | 24 | 146.40 | 147.80 | 146.40 | 0.00 | 570.05 | 569.95 | 492.50 | 77.45 |
| 12 | 19603 | 817 | 25 | 126.20 | 146.30 | 144.90 | 0.00 | 567.26 | 569.07 | 492.51 | 76.56 |
| 13 | 18375 | 766 | 24 | 149.70 | 136.40 | 135.00 | 0.00 | 569.12 | 568.76 | 491.84 | 76.92 |
| 14 | 18464 | 769 | 24 | 122.80 | 137.70 | 136.30 | 0.00 | 567.03 | 568.37 | 491.93 | 76.44 |
| 15 | 17402 | 725 | 24 | 129.70 | 132.10 | 130.70 | 0.00 | 566.70 | 567.24 | 491.61 | 75.63 |
| 16 | 18033 | 751 | 24 | 152.50 | 135.80 | 134.40 | 0.00 | 569.02 | 567.76 | 491.88 | 75.88 |
| 17 | 20753 | 865 | 24 | 155.40 | 158.30 | 156.90 | 0.00 | 568.62 | 568.67 | 493.09 | 75.58 |
| 18 | 19661 | 819 | 26 | 143.80 | 149.00 | 147.60 | 0.00 | 567.89 | 568.06 | 492.74 | 75.32 |
| 19 | 19390 | 808 | 23 | 139.20 | 151.30 | 149.90 | 0.00 | 566.20 | 566.91 | 492.59 | 74.32 |
| 20 | 18523 | 772 | 26 | 154.80 | 143.80 | 142.40 | 0.00 | 567.74 | 566.81 | 492.33 | 74.48 |
| 21 | | | | 157.10 | 134.80 | 133.20 | 0.20 | 570.83 | 569.51 | 492.17 | 77.34 |
| 22 | | | | 155.80 | 155.20 | 143.70 | 10.10 | 570.92 | 570.74 | 493.04 | 77.70 |
| 23 | | | | 161.60 | 162.60 | 161.20 | 0.00 | 570.78 | 570.88 | 493.50 | 77.38 |
| 24 | | | | 158.60 | 166.80 | 165.40 | 0.00 | 569.65 | 570.01 | 493.79 | 76.22 |
| 25 | | | | 153.10 | 143.60 | 142.20 | 0.00 | 570.96 | 570.48 | 492.51 | 77.97 |
| 26 | | | | 146.20 | 146.80 | 130.80 | 14.50 | 570.88 | 571.04 | 492.42 | 78.62 |
| 27 | | | | 128.30 | 134.90 | 129.00 | 4.50 | 569.98 | 570.62 | 492.13 | 78.49 |
| 28 | | | | | | | | | | | |
|
| TOT | 368267 | | 491 | | | | | | | | |
| AVG | 18413 | 767 | 25 | 140.59 | 140.79 | 138.21 | 1.18 | 568.97 | 569.05 | 492.20 | 76.85 |
|
| MAX | 20753 | | | 161.60 | 166.80 | 165.40 | 14.50 | 571.23 | 571.04 | 493.79 | 78.62 |
| MIN | 15483 | | | 115.80 | 111.90 | 110.50 | 0.00 | 566.20 | 566.37 | 490.14 | 74.32 |