Black Hawk Marsh Black Hawk Marsh Sac 1224 Lake View
Dismal Swamp Dismal Swamp Kossuth 1125 German Valley
Fallow Marsh Fallow Marsh Palo Alto 1312 Graettinger West
Fisher Lake Fisher Lake Polk 804 Des Moines NW
Kiowa Marsh Kiowa Marsh Sac 1345 Sac City West
Perkins Marsh Perkins Marsh Palo Alto 1260 Graettinger West
Smiths Slough Smiths Slough Clay 1342 Ruthven
Impassable Marsh (historical) Impassable Marsh (historical) Humboldt 1129 Thor
Willow Marsh (historical) Willow Marsh (historical) Harrison 1007 Modale
East Slough East Slough Emmet 1270 Ingham Lake
Wasmund Slough Wasmund Slough Osceola 1644 Sibley East
Sutton Lake Marsh Sutton Lake Marsh Osceola 1535 Ocheyedan
McBreen Marsh McBreen Marsh Dickinson 1496 Okoboji
Michaelsen Marsh Michaelsen Marsh Palo Alto 1138 Titonka
Greenwood Marsh Greenwood Marsh Kossuth 1161 Armstrong SE
Rutland Marsh Rutland Marsh Humboldt 1125 Bode
Nahant Marsh Nahant Marsh Scott 551 Andalusia
John Deere Marsh John Deere Marsh Dubuque 607 Dubuque North
Sweet Marsh Sweet Marsh Bremer 991 Sumner SW