2017 Map of Pierce Reservoir

About this map

The high plains of the Carbon Co Albany Co border are defined by a complex network of irrigation and water management infrastructure. This 2017 survey details the hydrological landscape of the Rock River area, where early 20th-century water engineering remains central to the region's geography. Major storage features like Pierce Reservoir, Little Pierce Reservoir, and Lace Reservoir are fed and drained by a series of engineered channels, including the Big Harrison Ditch, Noel Ditch, and Fisher Field Number 1 Ditch. These waterways cross a terrain marked by natural features such as Frank Draw and Threemile Cr, showing the intersection of natural drainage and human modification. The settlement of Rock River sits at the northeastern corner of the map, served by the flow of Rock Creek and Bosler Ditch Number 3. Along the southern boundary, Old State HWY 13 and Cooper Cove RD provide the primary transit corridors through this rural ranching environment.