1. US Army Corps of Engineers 597 Garrison Dam Rd, Riverdale, ND 58565 Coordinate: 47.497787,-101.176094 Phone: (701) 654-7441
2. City of Riverdale 300 2nd St, Riverdale, ND 58565 Coordinate: 47.49809,-101.37384 Phone: (701) 654-7636