Grand Coulee Dam
Friday July 31, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 92.00 | 92.00 | 0.00 | 1285.20 | 959.30 | 325.90 |
| 2 | 97.60 | 97.60 | 0.00 | 1285.20 | 959.70 | 325.50 |
| 3 | 77.10 | 77.10 | 0.00 | 1285.20 | 958.50 | 326.70 |
| 4 | 66.40 | 66.40 | 0.00 | 1285.30 | 957.20 | 328.10 |
| 5 | 73.60 | 73.60 | 0.00 | 1285.30 | 957.60 | 327.70 |
| 6 | 70.60 | 70.60 | 0.00 | 1285.30 | 957.60 | 327.70 |
| 7 | 76.10 | 76.10 | 0.00 | 1285.30 | 957.80 | 327.50 |
| 8 | 88.00 | 88.00 | 0.00 | 1285.20 | 958.70 | 326.50 |
| 9 | 88.00 | 88.00 | 0.00 | 1285.20 | 959.10 | 326.10 |
| 10 | 102.30 | 102.30 | 0.00 | 1285.20 | 966.20 | 319.00 |
| 11 | 110.20 | 110.20 | 0.00 | 1285.20 | 961.00 | 324.20 |
| 12 | 116.80 | 116.80 | 0.00 | 1285.20 | 961.70 | 323.50 |
| 13 | 126.50 | 126.50 | 0.00 | 1285.20 | 962.40 | 322.80 |
| 14 | 143.80 | 143.80 | 0.00 | 1285.10 | 963.70 | 321.40 |
| 15 | 157.40 | 157.40 | 0.00 | 1285.00 | 965.10 | 319.90 |
| 16 | 156.70 | 156.70 | 0.00 | 1284.90 | 965.70 | 319.20 |
| 17 | 146.70 | 146.70 | 0.00 | 1285.00 | 965.00 | 320.00 |
| 18 | 176.10 | 176.10 | 0.00 | 1284.80 | 966.70 | 318.10 |
| 19 | 186.40 | 186.40 | 0.00 | 1284.70 | 968.20 | 316.50 |
| 20 | 193.50 | 193.50 | 0.00 | 1284.70 | 969.20 | 315.50 |
| 21 | 175.20 | 175.20 | 0.00 | 1284.60 | 968.40 | 316.20 |
| 22 | 141.00 | 141.00 | 0.00 | 1284.60 | 965.90 | 318.70 |
| 23 | 102.80 | 101.80 | 1.00 | 1284.60 | 962.70 | 321.90 |
| 24 | 88.80 | 88.80 | 0.00 | 1284.60 | 960.50 | 324.10 |
|
| AVG | 118.90 | 118.86 | 0.04 | 1285.02 | 962.41 | 322.61 |
|
| MAX | 193.50 | 193.50 | 1.00 | 1285.30 | 969.20 | 328.10 |
| MIN | 66.40 | 66.40 | 0.00 | 1284.60 | 957.20 | 315.50 |