2024 Map of Jacobs Reservoir

About this map

The Hart Mountain National Antelope Refuge dominates this high-desert terrain in Lake County, Oregon, where a sophisticated network of catchments and seasonal basins defines the land's utility. Water management for wildlife and livestock is evident through features like Jacobs Reservoir, O'Keefe Reservoir, and Handle Reservoir. The landscape is a mix of broad volcanic flats such as Big Flat and Wire Corral Flat, punctuated by steep relief in Riffle Canyon and Fisher Canyon. This modern survey illustrates the persistent importance of named water sources in the arid basin, from the isolated Wagner Waterhole to the strangely named School Section Lake. Along the eastern edge, drainage follows Guano Creek and Clover Swale, while landmarks like Cat Butte provide orientation points across the expansive sagebrush steppe.