A Phase I sampling survey of cultural resources at the Camp Ripley Military Reserve in Morrison County, Minnesota was conducted in the fall of 1986 by the Institute for Minnesota Archaeology (IMA). This survey was authorized by the St. Paul District, Corps of Engineers as part of a program to assist the Army National Guard in preserving and managing cultural resources in the reserve. The IMA survey verified 8 find spots and 21 prehistoric and historic sites and gathered data on other sites in the Camp Ripley area. The nature and location of these resources hints that past human behavior was influenced by the natural environment in ways that can be measured from the material record. The developing pattern appears to fit site-environment models from adjacent regions of Minnesota. (FR).