John Day Dam
Wednesday May 20, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
| 1 | 225.00 | 61.70 | 162.40 | 265.32 | 160.72 | 104.60 |
| 2 | 226.20 | 63.10 | 162.20 | 265.22 | 160.92 | 104.30 |
| 3 | 225.00 | 62.20 | 161.90 | 265.22 | 161.12 | 104.10 |
| 4 | 224.90 | 62.00 | 161.90 | 265.22 | 161.12 | 104.10 |
| 5 | 224.80 | 62.00 | 161.90 | 265.22 | 161.42 | 103.80 |
| 6 | 224.40 | 61.60 | 161.90 | 265.22 | 161.62 | 103.60 |
| 7 | 223.40 | 60.50 | 161.90 | 265.22 | 161.22 | 104.00 |
| 8 | 223.10 | 60.20 | 161.90 | 265.22 | 161.32 | 103.90 |
| 9 | 224.50 | 61.60 | 161.90 | 265.22 | 161.32 | 103.90 |
| 10 | 223.40 | 60.60 | 161.90 | 265.12 | 161.52 | 103.60 |
| 11 | 224.80 | 60.30 | 161.90 | 265.12 | 161.62 | 103.50 |
| 12 | 209.70 | 60.30 | 146.80 | 265.22 | 161.73 | 103.49 |
| 13 | 201.60 | 61.60 | 139.00 | 265.22 | 161.82 | 103.40 |
| 14 | 201.50 | 60.00 | 138.80 | 265.22 | 161.52 | 103.70 |
| 15 | 199.80 | 59.80 | 139.00 | 265.22 | 161.43 | 103.79 |
| 16 | 200.50 | 58.70 | 139.00 | 265.22 | 161.42 | 103.80 |
| 17 | 204.40 | 62.60 | 139.10 | 265.22 | 161.52 | 103.70 |
| 18 | 201.40 | 61.40 | 139.10 | 265.32 | 161.52 | 103.80 |
| 19 | 200.30 | 60.20 | 139.10 | 265.32 | 161.42 | 103.90 |
| 20 | 202.50 | 60.70 | 139.10 | 265.32 | 161.21 | 104.11 |
| 21 | 201.50 | 61.50 | 139.10 | 265.32 | 161.02 | 104.30 |
| 22 | 203.20 | 61.30 | 139.10 | 265.32 | 160.72 | 104.60 |
| 23 | 203.20 | 61.40 | 139.10 | 265.32 | 160.42 | 104.90 |
| 24 | 201.20 | 61.10 | 139.10 | 265.32 | 159.56 | 105.76 |
|
| AVG | 212.51 | 61.10 | 149.88 | 265.24 | 161.22 | 104.03 |
|
| MAX | 226.20 | 63.10 | 162.40 | 265.32 | 161.82 | 105.76 |
| MIN | 199.80 | 58.70 | 138.80 | 265.12 | 159.56 | 103.40 |