| Wallula Gap | Walla Walla, WA | 2.7 miles | SW |
| Homly Channel | Benton, WA | 6 miles | NW |
| West Channel | Benton, WA | 6.1 miles | NW |
| Spawning Channel | Umatilla, OR | 21.5 miles | SW |
| McNary Range Channel | Umatilla, OR | 21.9 miles | SW |
| Irrigon Middle Range Channel | Morrow, OR | 28.9 miles | SW |
| Irrigon Lower Range | Morrow, OR | 32.4 miles | SW |
| South Channel | Morrow, OR | 37.2 miles | SW |
| South Channel Columbia River | Benton, WA | 37.2 miles | SW |
| North Channel Columbia River | Benton, WA | 38 miles | SW |
| Messinger Upper Range | Morrow, OR | 38.8 miles | SW |
| Messinger Middle Range | Morrow, OR | 39.6 miles | SW |
| Messinger Lower Range | Morrow, OR | 41.6 miles | SW |
| Hanford Reach | Benton, WA | 48.6 miles | NW |
| Cougar Canyon | Whitman, WA | 71 miles | NE |
| Hells Gate Channel Range B | Sherman, OR | 98.5 miles | SW |
| Hells Gate | Klickitat, WA | 99.6 miles | SW |
| South Channel Range C | Sherman, OR | 100.7 miles | SW |
| South Channel | Klickitat, WA | 101.1 miles | SW |
| South Channel | Sherman, OR | 101.2 miles | SW |
| South Channel Range B | Wasco, OR | 101.4 miles | SW |
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