| Business | Phone |
| Us Army Corps Of Engineers 201 1st St, Riverdale 58565 | (701) 654-7414 |
| Us Army Corps Of Engineers 597 Garrions Dam Rd, Riverdale 58565 | (701) 654-7441 |
| Us Fish & Wildlife Svc Hatchery Rd, Riverdale 58565 | (701) 654-7451 |
| Corps Of Engineers Garrison Dam Power House, Riverdale 58565 | (701) 654-7514 |