Lower Monumental Dam
Sunday April 12, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Nav Lock Tailwater Elevation |
| 1 | 65.30 | 12.20 | 52.50 | 538.31 | 438.78 | 99.53 | 439.00 |
| 2 | 67.00 | 12.30 | 54.10 | 538.48 | 438.74 | 99.74 | 439.10 |
| 3 | 67.00 | 12.40 | 54.00 | 538.39 | 438.74 | 99.65 | 439.01 |
| 4 | 66.90 | 12.30 | 53.90 | 538.42 | 438.77 | 99.65 | 439.11 |
| 5 | 67.00 | 12.30 | 54.10 | 538.35 | 438.76 | 99.59 | 439.03 |
| 6 | 67.00 | 12.40 | 54.10 | 538.41 | 438.79 | 99.62 | 439.19 |
| 7 | 66.90 | 12.20 | 54.10 | 538.39 | 438.79 | 99.60 | 439.13 |
| 8 | 66.80 | 12.40 | 53.90 | 538.38 | 438.78 | 99.60 | 439.06 |
| 9 | 66.80 | 12.30 | 53.90 | 538.40 | 438.82 | 99.58 | 439.09 |
| 10 | 66.80 | 12.40 | 53.80 | 538.37 | 438.86 | 99.51 | 439.20 |
| 11 | 67.00 | 12.50 | 53.90 | 538.38 | 438.84 | 99.54 | 439.15 |
| 12 | 67.00 | 12.30 | 54.00 | 538.37 | 438.82 | 99.55 | 439.16 |
| 13 | 67.00 | 12.30 | 54.10 | 538.35 | 438.85 | 99.50 | 439.22 |
| 14 | 67.40 | 12.60 | 54.10 | 538.35 | 438.87 | 99.48 | 439.21 |
| 15 | 67.10 | 12.40 | 54.10 | 538.34 | 438.87 | 99.47 | 439.21 |
| 16 | 67.10 | 12.40 | 54.10 | 538.35 | 438.87 | 99.48 | 439.27 |
| 17 | 67.20 | 12.50 | 54.10 | 538.34 | 438.89 | 99.45 | 439.35 |
| 18 | 67.10 | 12.40 | 54.10 | 538.34 | 438.88 | 99.46 | 439.28 |
| 19 | 67.20 | 12.50 | 54.10 | 538.34 | 438.84 | 99.50 | 439.28 |
| 20 | 67.20 | 12.40 | 54.30 | 538.35 | 438.87 | 99.48 | 439.31 |
| 21 | 68.70 | 12.20 | 54.40 | 538.36 | 439.02 | 99.34 | 439.42 |
| 22 | 67.40 | 12.30 | 54.50 | 538.33 | 438.88 | 99.45 | 439.28 |
| 23 | 67.20 | 12.20 | 54.30 | 538.35 | 438.84 | 99.51 | 439.38 |
| 24 | 67.00 | 12.20 | 54.20 | 538.35 | 438.87 | 99.48 | 439.25 |
|
| AVG | 67.05 | 12.35 | 54.03 | 538.37 | 438.84 | 99.53 | 439.20 |
|
| MAX | 68.70 | 12.60 | 54.50 | 538.48 | 439.02 | 99.74 | 439.42 |
| MIN | 65.30 | 12.20 | 52.50 | 538.31 | 438.74 | 99.34 | 439.00 |