| Business | Phone |
| Us Geological Survey 1608 Mountain View Rd, Rapid City 57702 | (605) 355-4560 |
| Us Interior Dept 515 9th St, Rapid City 57701 | (605) 341-3942 |
| Us Reclamation Bureau Hc 33, Rapid City 57702 | (605) 342-3696 |
| Us Army Corps Of Engineers 2100 7th St, Rapid City 57701 | (605) 341-3169 |