| Pump High Lateral | Spokane, WA | 39.5 miles | NE |
| South Branch Canal | Spokane, WA | 41 miles | NE |
| Spokane River Canal | Spokane, WA | 42.4 miles | NW |
| Hy Line Ditch | Kootenai, ID | 45.6 miles | NE |
| East Greenacres East Ditch | Kootenai, ID | 46.2 miles | NE |
| Mikelson Canal | Kootenai, ID | 47 miles | NE |
| East Greenacres North Ditch | Kootenai, ID | 47.3 miles | NE |
| East Greenacres Main Ditch | Kootenai, ID | 49.8 miles | NE |
| Sweetwater Canal | Nez Perce, ID | 54.2 miles | SE |
| Webb Creek Canal | Nez Perce, ID | 60.8 miles | SE |
| Lind Coulee Siphon Number 1 | Adams, WA | 84.7 miles | SW |
| Lind Coulee Siphon Number 2 | Adams, WA | 84.9 miles | SW |
| Weber Coulee Syphon | Grant, WA | 87.6 miles | NW |
| Weber Branch Syphon | Grant, WA | 88.7 miles | NW |
| Shano Siphon | Adams, WA | 88.7 miles | SW |
| Kansas Prairie Siphon | Adams, WA | 89 miles | SW |
| Mill Creek Channel | Walla Walla, WA | 89.1 miles | SW |
| Scooteney Wasteway | Franklin, WA | 89.3 miles | SW |
| Swamp Creek Ditch | Sanders, MT | 91 miles | NE |
| Weber Wasteway | Grant, WA | 91.3 miles | SW |
| Potholes Canal | Franklin, WA | 93.8 miles | SW |
| East Low Canal | Grant, WA | 95.1 miles | NW |
| Rocky Coulee Syphon | Grant, WA | 95.2 miles | NW |
| Whitman Ditch | Walla Walla, WA | 96.1 miles | SW |
| Wahluke Siphon | Franklin, WA | 96.2 miles | SW |
| Sand Coulee Syphon | Grant, WA | 96.2 miles | NW |
| Williams Ditch | Walla Walla, WA | 96.7 miles | SW |
| Rocky Coulee Wasteway | Grant, WA | 96.7 miles | NW |
| Garden City Ditch | Walla Walla, WA | 97.7 miles | SW |
| Mud District Number 2 Canal | Walla Walla, WA | 97.9 miles | SW |
| Hudson Bay Canal | Umatilla, OR | 98.2 miles | SW |
| Weatherspoon Ditch | Baker, OR | 98.3 miles | SW |
| Burlingame Ditch | Walla Walla, WA | 98.4 miles | SW |
| Bowlus Ditch | Umatilla, OR | 98.4 miles | SW |
| Dorothy Ditch | Umatilla, OR | 98.7 miles | SW |
| Pleasant View Canal | Umatilla, OR | 98.7 miles | SW |
| Mud District Number 7 Canal | Walla Walla, WA | 98.8 miles | SW |
| Wahluke Branch Canal | Franklin, WA | 98.9 miles | SW |
| DPE Thirtynine | Franklin, WA | 99.1 miles | SW |
| Milton Ditch | Umatilla, OR | 99.1 miles | SW |
| Mud Creek Canal | Walla Walla, WA | 99.2 miles | SW |
| Spence Ditch | Umatilla, OR | 99.3 miles | SW |
| Zell Ditch | Umatilla, OR | 99.4 miles | SW |
| Short Low Ditch (historical) | Walla Walla, WA | 100.2 miles | SW |
| Short Low Ditch | Umatilla, OR | 100.5 miles | SW |
| Touchet East Side Ditch | Walla Walla, WA | 100.6 miles | SW |
| Demaris Ditch | Walla Walla, WA | 100.8 miles | SW |
| Touchet West Side Ditch | Walla Walla, WA | 101 miles | SW |
| Love Loney Ditch | Umatilla, OR | 101.6 miles | SW |
| Eltopia Branch Canal | Franklin, WA | 101.7 miles | SW |
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