Lakes in Obrien County, Iowa OTHER COUNTIES NEARBY Buena Vista County Calhoun County Cherokee County Clay County Dickinson County Emmet County Ida County Lyon County Osceola County Palo Alto County Pocahontas County Sac County Sioux County Woodbury County Cottonwood County Jackson County Martin County Murray County Nobles County Pipestone County Rock County Watonwan County Dakota County Thurston County Iowa Lakes