2011 Map of Three Forks

About this map

The confluence of three river branches defines this remote section of Malheur County, where the Owyhee River meets the North Fork Owyhee River and Middle Fork Owyhee River. This 2011 survey captures a landscape dominated by deep basalt canyons and a high-desert drainage network, centered on the historic river crossing at Three Forks. The topographical data shows the steep ascent of the Military Grade and the prominent Three Forks Dome, reflecting a territory where water management is critical for land use. A dense network of small-scale impoundments like Lone Tree Reservoir, Whitehorse Creek Reservoir, and Squaw Flat Reservoir Number Two are scattered across the flats and canyons, illustrating the vital infrastructure required for ranching operations. Remote access is traced through primitive routes such as 3 Forks Rd and Fenwick Ranch Rd, which connect isolated features like Whiskey Gulch and Porcupine Canyon to the wider region.