| Portage Canal | Jefferson, WA | 24.9 miles | NE |
| Lake Washington Ship Canal | King, WA | 25.9 miles | SE |
| Walsh Lake Diversion Ditch | King, WA | 49.3 miles | SE |
| Hill Ditch | Skagit, WA | 53.1 miles | NE |
| Blooms Ditch | Thurston, WA | 53.3 miles | SW |
| Centralia Canal | Thurston, WA | 54 miles | SE |
| Yelm Ditch | Thurston, WA | 57.7 miles | SE |
| Smith Canal | Grays Harbor, WA | 58.5 miles | SW |
| Electron Flume | Pierce, WA | 64.5 miles | SE |
| Schell Ditch | Whatcom, WA | 80.2 miles | NE |
| Drainage Ditch Number 1 | Pacific, WA | 84.6 miles | SW |
| Mormon Ditch | Whatcom, WA | 89.8 miles | NE |
| Double Ditch | Whatcom, WA | 90.6 miles | NE |
| Kamm Ditch | Whatcom, WA | 90.6 miles | NE |
| Main Canal | Kittitas, WA | 101 miles | SE |
| Yakima Tieton Main Canal | Yakima, WA | 116.6 miles | SE |
| John Cox Ditch | Yakima, WA | 125.7 miles | SE |
| Shaw Knox Ditch | Yakima, WA | 126 miles | SE |
| Lesh Ditch | Yakima, WA | 127 miles | SE |
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