Grand Coulee Dam
Thursday June 4, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 160.70 | 160.70 | 0.00 | 1275.30 | 966.50 | 308.80 |
| 2 | 159.40 | 159.40 | 0.00 | 1275.30 | 966.20 | 309.10 |
| 3 | 167.30 | 167.30 | 0.00 | 1275.30 | 966.50 | 308.80 |
| 4 | 179.50 | 179.50 | 0.00 | 1275.30 | 967.50 | 307.80 |
| 5 | 176.20 | 176.20 | 0.00 | 1275.40 | 967.70 | 307.70 |
| 6 | 176.90 | 176.90 | 0.00 | 1275.40 | 967.70 | 307.70 |
| 7 | 163.20 | 163.20 | 0.00 | 1275.40 | 966.90 | 308.50 |
| 8 | 169.70 | 169.70 | 0.00 | 1275.40 | 967.00 | 308.40 |
| 9 | 178.50 | 178.50 | 0.00 | 1275.30 | 967.60 | 307.70 |
| 10 | 176.80 | 176.80 | 0.00 | 1275.40 | 967.90 | 307.50 |
| 11 | 177.70 | 177.70 | 0.00 | 1275.40 | 967.90 | 307.50 |
| 12 | 164.40 | 164.40 | 0.00 | 1275.40 | 967.10 | 308.30 |
| 13 | 161.90 | 161.90 | 0.00 | 1275.50 | 966.60 | 308.90 |
| 14 | 154.60 | 154.60 | 0.00 | 1275.50 | 966.10 | 309.40 |
| 15 | 153.60 | 153.60 | 0.00 | 1275.50 | 965.90 | 309.60 |
| 16 | 156.80 | 156.80 | 0.00 | 1275.50 | 966.20 | 309.30 |
| 17 | 157.70 | 157.70 | 0.00 | 1275.50 | 965.90 | 309.60 |
| 18 | 162.70 | 162.70 | 0.00 | 1275.60 | 966.60 | 309.00 |
| 19 | 163.50 | 163.50 | 0.00 | 1275.60 | 966.70 | 308.90 |
| 20 | 160.60 | 160.60 | 0.00 | 1275.70 | 966.50 | 309.20 |
| 21 | 162.80 | 162.80 | 0.00 | 1275.70 | 966.60 | 309.10 |
| 22 | 170.80 | 170.80 | 0.00 | 1275.70 | 967.20 | 308.50 |
| 23 | 178.70 | 178.70 | 0.00 | 1275.60 | 967.90 | 307.70 |
| 24 | 170.40 | 170.40 | 0.00 | 1275.70 | 967.80 | 307.90 |
|
| AVG | 166.85 | 166.85 | 0.00 | 1275.47 | 966.94 | 308.54 |
|
| MAX | 179.50 | 179.50 | 0.00 | 1275.70 | 967.90 | 309.60 |
| MIN | 153.60 | 153.60 | 0.00 | 1275.30 | 965.90 | 307.50 |