Lakes in Polk County, Iowa      Avon Lake Big Creek Lake Big Creek Pounding Area Browns Lake Canary Lake Case Lake Dean Lake Grays Lake Lake Halice Hickory Lake Howard Lake Lake Easter Randleman Lake Saylorville Lake Woodland Lake OTHER COUNTIES NEARBY Adair County Adams County Appanoose County Boone County Calhoun County Clarke County Dallas County Decatur County Greene County Grundy County Guthrie County Hamilton County Hardin County Jasper County Lucas County Madison County Marion County Marshall County Monroe County Ringgold County Story County Union County Warren County Wayne County Iowa Lakes