| Old Prairie Swamp | Delaware, IN | 14.7 miles | NW |
| Bacon Swamp | Marion, IN | 55.9 miles | SW |
| Mosquito Lake Bog (historical) | Champaign, OH | 68.4 miles | SE |
| Cedar Swamp | Champaign, OH | 78.1 miles | SE |
| Red Marsh | Noble, IN | 78.5 miles | NW |
| The Spread | Noble, IN | 80.4 miles | NW |
| Scioto Marsh (historical) | Hardin, OH | 80.5 miles | NE |
| Willets Lake | Kosciusko, IN | 81.6 miles | NW |
| Beaver Swamp (historical) | Putnam, OH | 86 miles | NE |
| Hog Creek Marsh (historical) | Hardin, OH | 87 miles | NE |
| Oliver Lake Outlet | LaGrange, IN | 88 miles | NW |
| Grass Lake | LaGrange, IN | 91.5 miles | NW |
| Crane Swamp | Union, OH | 93.1 miles | SE |
| Bear Swamp (historical) | Union, OH | 93.2 miles | SE |
| Mulvey Pond | Tippecanoe, IN | 95.6 miles | NW |
| Barnes Swamp | Steuben, IN | 96.8 miles | NE |
| Potato Creek Swamp (historical) | Wyandot, OH | 100.4 miles | NE |
| Cedar Lake | Steuben, IN | 101.6 miles | NE |
| Pinhook Bog | LaPorte, IN | 124 miles | NW |
| Hotter Lagoon | Porter, IN | 124.4 miles | NW |
| Moore Swamp | Porter, IN | 124.5 miles | NW |
| Cowles Bog | Porter, IN | 134 miles | NW |
| Elmore Pond | Daviess, IN | 138.9 miles | SW |
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