| Marquam Dry Lake Canal | Multnomah, OR | 10.8 miles | SW |
| China Ditch | Clark, WA | 11.7 miles | SE |
| Big Ditch | Clark, WA | 14 miles | SE |
| Peninsula Drainage Canal | Multnomah, OR | 14.8 miles | SE |
| Crown Zellerback Power Ditch | Clark, WA | 20.7 miles | SE |
| Lousignont Canal | Washington, OR | 26.6 miles | SW |
| Oswego Canal | Clackamas, OR | 28.3 miles | SW |
| Ditch Number Eight | Cowlitz, WA | 29 miles | NW |
| Ditch Number Ten | Cowlitz, WA | 29.8 miles | NW |
| Ditch Number Six | Cowlitz, WA | 29.9 miles | NW |
| Seely Ditch | Clackamas, OR | 33.9 miles | SW |
| Uncle Tom Slough | Columbia, OR | 34.9 miles | NW |
| Drescher Ditch | Marion, OR | 47.5 miles | SW |
| Oak Grove Ditch | Hood River, OR | 49.9 miles | SE |
| Lost Creek Ditch | Skamania, WA | 50.5 miles | NE |
| Walker Ditch | Marion, OR | 51.3 miles | SW |
| Dee Flat Ditch | Hood River, OR | 52.6 miles | SE |
| Jones Ditch | Marion, OR | 53 miles | SW |
| Low Line Ditch | Hood River, OR | 53.1 miles | SE |
| Lake Labish Ditch | Marion, OR | 54.5 miles | SW |
| Farmers Ditch | Hood River, OR | 55.5 miles | SE |
| Highline Lateral | Hood River, OR | 56.5 miles | SE |
| Volmer Ditch | Hood River, OR | 57 miles | SE |
| Mount Hood Canal | Hood River, OR | 57.8 miles | SE |
| Power Canal | Hood River, OR | 58 miles | SE |
| Central Lateral | Hood River, OR | 58 miles | SE |
| East Fork Main Canal | Hood River, OR | 58.1 miles | SE |
| Glacier Ditch | Hood River, OR | 58.4 miles | SE |
| Neal Creek Lateral | Hood River, OR | 59.4 miles | SE |
| Moroney Canal | Tillamook, OR | 60.9 miles | SW |
| Shelton Ditch | Marion, OR | 62.5 miles | SW |
| Mission Ditch | Marion, OR | 62.7 miles | SW |
| Skipanon Waterway | Clatsop, OR | 63.6 miles | NW |
| Highberger Ditch | Marion, OR | 67.1 miles | SW |
| Frog Creek Ditch | Wasco, OR | 67.6 miles | SE |
| Springer Ditch | Wasco, OR | 67.9 miles | SE |
| Sage Flat Ditch | Klickitat, WA | 68.6 miles | NE |
| Salem Ditch | Marion, OR | 69.2 miles | SW |
| Perrin Lateral | Marion, OR | 69.6 miles | SW |
| Main Canal | Marion, OR | 70.4 miles | SW |
| Clear Creek Ditch | Wasco, OR | 70.6 miles | SE |
| Hellroaring Ditch | Yakima, WA | 70.7 miles | NE |
| Wolf Run Ditch | Wasco, OR | 70.8 miles | SE |
| Marion Ditch | Marion, OR | 72.6 miles | SW |
| Sidney Power Ditch | Marion, OR | 72.8 miles | SW |
| Orchard Ridge Ditch | Wasco, OR | 74 miles | SE |
| Lost Boulder Ditch | Wasco, OR | 74.7 miles | SE |
| Sidney Ditch | Marion, OR | 75.1 miles | SW |
| Peters Ditch | Linn, OR | 76.7 miles | SW |
| Jefferson Ditch | Marion, OR | 76.9 miles | SW |
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