Us Interior Department 31247 436th Ave Yankton, SD 57078 Phone : (605) 665-9217 Business Category Land Mineral Wildlife & Forest Conservation United States Government--yankton, Us Geological Surbey, Yankton Field Research Station 31247 436th Ave Yankton, SD 57078 Phone : (605) 665-9217 Business Category Government Offices-Federal Engineers-Professional Engineers Agricultural & Geological Engineering & Architectural Services Government Offices & Public Schools