2023 Map of Owyhee

About this map

Owyhee and the surrounding high desert plateau of Ada County are defined by a complex network of seasonal drainage and irrigation routes that have shaped this portion of the Treasure Valley. The settlement at Pleasant Valley serves as a focal point in a landscape otherwise dominated by the vast catchment systems of Indian Creek and Tenmile Creek. This 2023 survey illustrates the modern configuration of the high desert range, where roads like Pleasant Valley Rd and Kuna Mora Rd follow the rigid township and range lines typical of the American West. Key water management features such as the Blacks Cr Reservoir and smaller tributaries like Bryans Run and Eightmile Creek highlight the critical role of water infrastructure in this arid environment, showing how natural topography and human engineering coincide south of the Boise metropolitan area.