2017 Map of Chesterfield Reservoir

About this map

Chesterfield Reservoir anchors this high-elevation landscape in southeastern Idaho, where drainage from the surrounding canyons feeds into the upper Portneuf River system. The map captures a rugged topography defined by named landmarks like Sawmill Ridge and Jim Corneilson Canyon, reflecting a long history of local land use and geographic naming. The network of seasonal and perennial streams, including Twentyfour Mile Cr and Jeff Cabin Cr, highlights the complex water management required in this arid environment, culminating in the Twentyfour Mile Reservoir and the larger Chesterfield pool. A rural road network, including Banks Rd and Reservation Rd, skirts the water's edge, providing access to remote springs such as Corduroy Spring and Hibner Spring. This survey provides a clear view of the hydraulic and topographic character of the region before further modern developments altered the local drainage patterns.