| Business | Phone |
| Us Army Corps Of Engineers 75819 Shortridge Hill Rd, Cottage Grove 97424 | (541) 942-5631 |
| Us Geological Survey 34979 Shoreview Dr, Cottage Grove 97424 | (541) 767-9957 |
| Us Geological Survey Cottage Grove Dam, Cottage Grove 97424 | (541) 942-9751 |