Creator
- Sean Wilson, Geologist1
- Shasta County (Calif.)1
- Tehama County Public Works1
- The Nature Conservancy1
- U.S. Census Bureau. Geography Division1
- U.S. Fish and Wildlife Service1
- United States Geological Survey1
- United States. Bureau of Customs and Border Protection1
- United States. Coast Guard1
- United States. Department of Commerce1
- United States. Environmental Protection Agency, Region IX1
- United States. Environmental Protection Agency.1
- United States. Federal Highway Administration. Office of Highway Policy Information1
- United States. National Ocean Service1
- United States. National Oceanic and Atmospheric Administration1
- United States. Office of the Deputy Under Secretary of Defense (Installations and Environment)1
- Yolo County, Public Works Division, Planning Services 1