| Blooms Ditch | Thurston, WA | 10.9 miles | NW |
| Centralia Canal | Thurston, WA | 17.3 miles | NE |
| Yelm Ditch | Thurston, WA | 18.5 miles | NE |
| Smith Canal | Grays Harbor, WA | 35.2 miles | NW |
| Electron Flume | Pierce, WA | 38.5 miles | NE |
| Ditch Number Six | Cowlitz, WA | 43.4 miles | SW |
| Ditch Number Ten | Cowlitz, WA | 43.7 miles | SW |
| Ditch Number Eight | Cowlitz, WA | 44.5 miles | SW |
| Uncle Tom Slough | Columbia, OR | 50.5 miles | SW |
| Drainage Ditch Number 1 | Pacific, WA | 57.3 miles | SW |
| Walsh Lake Diversion Ditch | King, WA | 59.3 miles | NE |
| Lake Washington Ship Canal | King, WA | 63.7 miles | NE |
| Skipanon Waterway | Clatsop, OR | 65.7 miles | SW |
| China Ditch | Clark, WA | 77.1 miles | SE |
| Marquam Dry Lake Canal | Multnomah, OR | 78.5 miles | SE |
| Big Ditch | Clark, WA | 80.8 miles | SE |
| Lost Creek Ditch | Skamania, WA | 81.5 miles | SE |
| Peninsula Drainage Canal | Multnomah, OR | 84.1 miles | SE |
| Portage Canal | Jefferson, WA | 85.3 miles | NE |
| Lousignont Canal | Washington, OR | 85.8 miles | SW |
| Crown Zellerback Power Ditch | Clark, WA | 86.5 miles | SE |
| Hellroaring Ditch | Yakima, WA | 87.4 miles | SE |
| Sage Flat Ditch | Klickitat, WA | 91.6 miles | SE |
| Yakima Tieton Main Canal | Yakima, WA | 91.9 miles | SE |
| Main Canal | Kittitas, WA | 95.6 miles | NE |
| Moroney Canal | Tillamook, OR | 95.8 miles | SW |
| John Cox Ditch | Yakima, WA | 97.1 miles | SE |
| Shaw Knox Ditch | Yakima, WA | 97.1 miles | SE |
| Oswego Canal | Clackamas, OR | 97.5 miles | SE |
| Lesh Ditch | Yakima, WA | 98.4 miles | SE |
| Oak Grove Ditch | Hood River, OR | 98.9 miles | SE |
| Farmers Ditch | Hood River, OR | 100.5 miles | SE |
| Power Canal | Hood River, OR | 100.5 miles | SE |
| Low Line Ditch | Hood River, OR | 101.1 miles | SE |
| Highline Lateral | Hood River, OR | 102.8 miles | SE |
| Dee Flat Ditch | Hood River, OR | 103.1 miles | SE |
| Neal Creek Lateral | Hood River, OR | 104.4 miles | SE |
| Central Lateral | Hood River, OR | 104.6 miles | SE |
| East Fork Main Canal | Hood River, OR | 106.4 miles | SE |
| Mount Hood Canal | Hood River, OR | 107.3 miles | SE |
| Volmer Ditch | Hood River, OR | 109.4 miles | SE |
| Glacier Ditch | Hood River, OR | 110.6 miles | SE |
| Wolf Run Ditch | Wasco, OR | 120.3 miles | SE |
| Orchard Ridge Ditch | Wasco, OR | 123.4 miles | SE |
| Dufur Ditch | Wasco, OR | 124.8 miles | SE |
|