WPAs in Dickinson County, IA Spring Run WPA1,233 acres Welsh Lake WPA962 acres Dugout Creek WPA788 acres Swan Lake WPA742 acres Diamond Lake WPA561 acres Yager Slough WPA539 acres Jemmerson Slough WPA538 acres Santee Prairie WPA454 acres Garlock Slough WPA347 acres Kettleson Hogsback WPA143 acres West Lake Okoboji WPA140 acres McClurg WPA119 acres Iowa National Heritage Foundation WPA81 acres Cory Marsh WPA71 acres Cayler Prairie WPA71 acres