1980 Map of Three Forks

About this map

The confluence of the North Fork Owyhee River and Middle Fork Owyhee River defines the landscape of this 1980 survey in Malheur County. This area, known as Three Forks, is marked by complex canyon systems and a network of livestock water management features. The Owyhee River carves deeply through the terrain, flanked by the Deary Canyon Pasture and the prominent Three Forks Dome. Historical transit is evident through specialized routes like the Wes Hawkins Trail (Pack) and the Military Grade, reflecting the logistical challenges of the high desert. Beyond the small settlement at Whitehorse, the map reveals a heavy reliance on artificial water sources, including Porcupine Reservoir and Lone Tree Reservoir, which supported ranching operations across the plateaus and gulches such as Whiskey Gulch.