| Day Drainage Ditch | Lincoln, OR | 29.8 miles | SW |
| Frazier Creek Ditch | Benton, OR | 43.3 miles | SE |
| Whitby Ditch | Benton, OR | 45.1 miles | SE |
| Sidney Power Ditch | Marion, OR | 47.1 miles | SE |
| Mission Ditch | Marion, OR | 49.5 miles | NE |
| Shelton Ditch | Marion, OR | 49.7 miles | NE |
| Moroney Canal | Tillamook, OR | 52 miles | NE |
| Jefferson Ditch | Marion, OR | 52 miles | SE |
| Albany Santiam Canal | Linn, OR | 52.6 miles | SE |
| Sidney Ditch | Marion, OR | 52.8 miles | SE |
| Perrin Lateral | Marion, OR | 54.1 miles | SE |
| Lake Labish Ditch | Marion, OR | 54.4 miles | NE |
| Jones Ditch | Marion, OR | 55 miles | NE |
| Marion Ditch | Marion, OR | 55.8 miles | SE |
| Sodom Ditch | Linn, OR | 56.1 miles | SE |
| Main Canal | Marion, OR | 56.2 miles | SE |
| Highberger Ditch | Marion, OR | 56.7 miles | SE |
| Salem Ditch | Marion, OR | 59.1 miles | SE |
| Walker Ditch | Marion, OR | 59.9 miles | NE |
| Peters Ditch | Linn, OR | 60.5 miles | SE |
| Lebanon Santiam Canal | Linn, OR | 61.7 miles | SE |
| Brownsville Ditch | Linn, OR | 62.7 miles | SE |
| Drescher Ditch | Marion, OR | 64 miles | NE |
| Lousignont Canal | Washington, OR | 64.3 miles | NE |
| Seely Ditch | Clackamas, OR | 67.5 miles | NE |
| Amazon Creek Diversion Channel | Lane, OR | 68 miles | SE |
| Lacomb Irrigation Canal | Linn, OR | 69.8 miles | SE |
| Oswego Canal | Clackamas, OR | 72.8 miles | NE |
| McKenzie Ditch | Lane, OR | 73.8 miles | SE |
| Q Street Canal | Lane, OR | 74.3 miles | SE |
| Marquam Dry Lake Canal | Multnomah, OR | 80.4 miles | NE |
| Walterville Canal | Lane, OR | 80.9 miles | SE |
| Peninsula Drainage Canal | Multnomah, OR | 83.4 miles | NE |
| Tunnel Millrace | Lane, OR | 84.8 miles | SE |
| Eugene Water and Electric Board Canal | Lane, OR | 85.8 miles | SE |
| Skipanon Waterway | Clatsop, OR | 89.8 miles | NE |
| Big Ditch | Clark, WA | 91.8 miles | NE |
| Crown Zellerback Power Ditch | Clark, WA | 93.1 miles | NE |
| Uncle Tom Slough | Columbia, OR | 93.4 miles | NE |
| China Ditch | Clark, WA | 94 miles | NE |
| Ditch Number Eight | Cowlitz, WA | 101.4 miles | NE |
| Ditch Number Ten | Cowlitz, WA | 102 miles | NE |
| Ditch Number Six | Cowlitz, WA | 102.5 miles | NE |
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