2020 Map of Mosquito Mountain

About this map

Malheur River flows through the northern reaches of this high-desert landscape in Malheur County, where water management is the primary driver of settlement patterns. The tiny community of Creston anchors the southeast corner, connected to the wider region by the winding Granite Creek Rd. The terrain is defined by a series of deep drainages such as Big Mosquito Canyon and Slaughter Gulch, which feed a sophisticated network of small-scale irrigation and livestock watering points. Numerous man-made features like Lower Slaughter Gulch Reservoir, Parks Reservoir, and Easterday Ditch reveal how ranchers have historically harnessed the intermittent flow from the heights of Mosquito Mtn. Land use is further characterized by large open tracts like Mosquito Flat and Barber Flat, alongside the industrial presence of the Westfield Pit.