John Day Dam
Tuesday May 12, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
| 1 | 241.20 | 60.40 | 179.80 | 265.52 | 160.32 | 105.20 |
| 2 | 240.10 | 59.40 | 179.80 | 265.52 | 160.72 | 104.80 |
| 3 | 240.50 | 59.70 | 179.80 | 265.52 | 161.02 | 104.50 |
| 4 | 240.30 | 59.60 | 179.80 | 265.52 | 161.12 | 104.40 |
| 5 | 240.30 | 59.60 | 179.80 | 265.52 | 161.12 | 104.40 |
| 6 | 241.40 | 60.70 | 179.80 | 265.42 | 161.12 | 104.30 |
| 7 | 239.10 | 58.40 | 179.80 | 265.42 | 161.22 | 104.20 |
| 8 | 239.50 | 58.70 | 179.80 | 265.42 | 160.92 | 104.50 |
| 9 | 240.50 | 59.80 | 179.80 | 265.42 | 161.32 | 104.10 |
| 10 | 238.80 | 58.10 | 179.80 | 265.42 | 161.12 | 104.30 |
| 11 | 240.40 | 59.70 | 179.80 | 265.42 | 161.28 | 104.14 |
| 12 | 240.10 | 59.30 | 179.80 | 265.42 | 161.62 | 103.80 |
| 13 | 240.40 | 59.60 | 179.80 | 265.42 | 161.62 | 103.80 |
| 14 | 240.60 | 59.80 | 179.80 | 265.42 | 161.74 | 103.68 |
| 15 | 247.10 | 59.90 | 184.60 | 265.42 | 162.02 | 103.40 |
| 16 | 246.30 | 60.60 | 184.90 | 265.42 | 161.82 | 103.60 |
| 17 | 246.30 | 60.50 | 184.90 | 265.52 | 161.67 | 103.85 |
| 18 | 248.70 | 61.10 | 184.90 | 265.52 | 161.62 | 103.90 |
| 19 | 247.30 | 61.50 | 184.90 | 265.52 | 161.42 | 104.10 |
| 20 | 246.90 | 61.20 | 184.90 | 265.52 | 161.45 | 104.07 |
| 21 | 245.60 | 59.80 | 184.90 | 265.42 | 161.22 | 104.20 |
| 22 | 248.50 | 60.90 | 184.90 | 265.42 | 161.29 | 104.13 |
| 23 | 244.70 | 59.00 | 184.90 | 265.52 | 160.92 | 104.60 |
| 24 | 246.00 | 58.40 | 184.90 | 265.42 | 161.32 | 104.10 |
|
| AVG | 242.94 | 59.82 | 181.91 | 265.46 | 161.29 | 104.17 |
|
| MAX | 248.70 | 61.50 | 184.90 | 265.52 | 162.02 | 105.20 |
| MIN | 238.80 | 58.10 | 179.80 | 265.42 | 160.32 | 103.40 |