1967 Map of Irish Lake

About this map

Jackass Mountain dominates the central portion of this 1960s Harney County landscape, representing a high desert environment shaped by seasonal water and cattle ranching. The presence of the M S Davies Ranch and numerous water improvements like Black Rim Dam, Upper Jack Creek Res, and the Company Trough highlight the vital infrastructure required for livestock in this arid basin. To the east, the terrain drops toward the Donner und Blitzen River valley and the Malheur National Wildlife Refuge. The map details a network of ephemeral basins and springs including Irish Lake, Marshall Lake, and John Cabin Spring. Curious geological and topographic features such as the Hole in the Ground and Hoghouse Canyon add character to the survey, while a Radio Facility and various Jeep Trails suggest the mid-century modernization of this remote area.