| Blooms Ditch | Thurston, WA | 14.2 miles | NW |
| Centralia Canal | Thurston, WA | 24 miles | NE |
| Yelm Ditch | Thurston, WA | 24.7 miles | NE |
| Smith Canal | Grays Harbor, WA | 33.5 miles | NW |
| Ditch Number Six | Cowlitz, WA | 37.7 miles | SW |
| Ditch Number Ten | Cowlitz, WA | 38 miles | SW |
| Ditch Number Eight | Cowlitz, WA | 38.8 miles | SW |
| Uncle Tom Slough | Columbia, OR | 44.1 miles | SW |
| Electron Flume | Pierce, WA | 44.2 miles | NE |
| Drainage Ditch Number 1 | Pacific, WA | 53 miles | NW |
| Skipanon Waterway | Clatsop, OR | 59.1 miles | SW |
| Walsh Lake Diversion Ditch | King, WA | 66.1 miles | NE |
| Lake Washington Ship Canal | King, WA | 70.2 miles | NE |
| China Ditch | Clark, WA | 73.2 miles | SE |
| Marquam Dry Lake Canal | Multnomah, OR | 73.6 miles | SE |
| Big Ditch | Clark, WA | 76.8 miles | SE |
| Peninsula Drainage Canal | Multnomah, OR | 79.6 miles | SE |
| Lousignont Canal | Washington, OR | 80.1 miles | SW |
| Lost Creek Ditch | Skamania, WA | 81.1 miles | SE |
| Crown Zellerback Power Ditch | Clark, WA | 82.8 miles | SE |
| Hellroaring Ditch | Yakima, WA | 88.6 miles | SE |
| Moroney Canal | Tillamook, OR | 89.1 miles | SW |
| Portage Canal | Jefferson, WA | 90.9 miles | NE |
| Sage Flat Ditch | Klickitat, WA | 92.3 miles | SE |
| Oswego Canal | Clackamas, OR | 92.7 miles | SE |
| Yakima Tieton Main Canal | Yakima, WA | 96 miles | SE |
| Oak Grove Ditch | Hood River, OR | 97.3 miles | SE |
| Seely Ditch | Clackamas, OR | 97.7 miles | SE |
| Farmers Ditch | Hood River, OR | 99.4 miles | SE |
| Power Canal | Hood River, OR | 99.6 miles | SE |
| Low Line Ditch | Hood River, OR | 99.6 miles | SE |
| Main Canal | Kittitas, WA | 101.2 miles | NE |
| Dee Flat Ditch | Hood River, OR | 101.4 miles | SE |
| Highline Lateral | Hood River, OR | 101.6 miles | SE |
| Neal Creek Lateral | Hood River, OR | 103.3 miles | SE |
| Central Lateral | Hood River, OR | 103.4 miles | SE |
| East Fork Main Canal | Hood River, OR | 105 miles | SE |
| Mount Hood Canal | Hood River, OR | 105.8 miles | SE |
| Volmer Ditch | Hood River, OR | 107.6 miles | SE |
| Glacier Ditch | Hood River, OR | 108.8 miles | SE |
| Wolf Run Ditch | Wasco, OR | 119 miles | SE |
| Springer Ditch | Wasco, OR | 119.2 miles | SE |
| Orchard Ridge Ditch | Wasco, OR | 122.1 miles | SE |
| Dufur Ditch | Wasco, OR | 124 miles | SE |
|