2020 Map of Chesterfield Reservoir

About this map

Chesterfield Reservoir anchors the southwestern portion of this Caribou County landscape, where the waters of Fourth of July Cr and Rock Cr collect in the basin. The terrain is defined by a series of steep drainages and ridges, including the prominent Sawmill Ridge to the northeast and the deep cuts of Jim Corneilson Canyon and Rocky Canyon. The drainage pattern reflects a complex hydrological network feeding into the Portneuf River, which winds along the western edge of the survey area. Several high-elevation water sources such as Cold Spring, Hibner Spring, and Corduroy Spring are noted throughout the hills. The human footprint is most visible through the grid of the Public Land Survey System, with roads like Basin Rd and Banks Rd providing access to the reservoir's shoreline and the surrounding ranching or grazing lands.