| Washington City Canal (historical) | District of Columbia, DC | 16.4 miles | SW |
| Potomac Aqueduct (historical) | District of Columbia, DC | 18.7 miles | SW |
| Alexandria Aqueduct | District of Columbia, DC | 18.7 miles | SW |
| Coal Pier Channel | Baltimore, MD | 20 miles | NE |
| Washington Aqueduct | District of Columbia, DC | 20.4 miles | SW |
| Price Creek | Queen Anne's, MD | 21.2 miles | SE |
| Rock Run Culvert | Montgomery, MD | 23.5 miles | SW |
| Beaverdam Ditch | Queen Anne's, MD | 47 miles | NE |
| Long Marsh Ditch | Queen Anne's, MD | 49.3 miles | NE |
| Beetree Ditch | Caroline, MD | 49.4 miles | NE |
| Chapel Branch Ditch | Queen Anne's, MD | 49.6 miles | NE |
| Edenburg Ditch | Caroline, MD | 50 miles | NE |
| Keenes Ditch | Dorchester, MD | 53.8 miles | SE |
| Yarema Ditch | Caroline, MD | 53.9 miles | NE |
| Yarema Ditch | Kent, DE | 53.9 miles | NE |
| Simons Ditch | Dorchester, MD | 54.2 miles | SE |
| The Canal | Dorchester, MD | 55.1 miles | SE |
| The Canal | Dorchester, MD | 56.8 miles | SE |
| Stafford Ditch | Sussex, DE | 57.9 miles | SE |
| Jobs Ditch | Dorchester, MD | 58.1 miles | SE |
| Potomack Canal | Jefferson, WV | 58.6 miles | NW |
| Ditch Road Ditch | Kent, DE | 58.8 miles | NE |
| Long Canal (historical) | Washington, MD | 59 miles | NW |
| Messick Ditch | Dorchester, MD | 60.8 miles | SE |
| Cow Marsh Ditch | Kent, DE | 60.8 miles | NE |
| The Canal | Dorchester, MD | 61.3 miles | SE |
| Laytons Ditch | Dorchester, MD | 61.4 miles | SE |
| Rose Ditch | Dorchester, MD | 61.8 miles | SE |
| Swain and Truitt Ditch | Sussex, DE | 63.5 miles | SE |
| Dorman Ditch | Wicomico, MD | 64 miles | SE |
| Chesapeake and Delaware Canal | New Castle, DE | 66.7 miles | NE |
| Kinniken Evans Ditch | Sussex, DE | 66.7 miles | SE |
| Sharkfin Shoal Channel | Dorchester, MD | 67.1 miles | SE |
| Collins and Culver Ditch | Sussex, DE | 67.9 miles | SE |
| Holly Ditch | Sussex, DE | 68.6 miles | SE |
| Straight Ditch | New Castle, DE | 69.4 miles | NE |
| Skunk Hill Ditch | New Castle, DE | 69.6 miles | NE |
| Black Savannah Ditch | Sussex, DE | 70.1 miles | SE |
| Deep Gully Ditch | Sussex, DE | 70.1 miles | SE |
| Bacon and Kenney Ditch | Sussex, DE | 70.2 miles | SE |
| Chesapeake and Ohio Canal | District of Columbia, DC | 70.4 miles | NW |
| Old Ditch | Sussex, DE | 70.8 miles | SE |
| Lees Ditch | Kent, DE | 71.1 miles | NE |
| Dutch Neck Canal | Kent, DE | 71.3 miles | NE |
| Tyndall and James Ditch | Sussex, DE | 71.4 miles | SE |
| Mikes Ditch | Kent, DE | 71.4 miles | NE |
| Slooch Ditch | Kent, DE | 71.7 miles | NE |
| East West Canal | Kent, DE | 71.7 miles | NE |
| Old Marina Canal | Kent, DE | 71.9 miles | NE |
| Line Ditch | Kent, DE | 72 miles | NE |
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