2014 Map of Berkholder Reservoir

About this map

Berkholder Reservoir and the drainage of Big Coulee define this high-plains landscape along the border of Toole and Liberty Counties. This modern topographic study reveals a terrain of deeply cut erosional features, known locally as coulees, which segment the agricultural and grazing lands. Named drainages such as Grandma Coulee, Fernell Coulee, and Antelope Coulee provide critical landmarks across the township and range system. The map documents a sparsely populated rural infrastructure where essential water management features like Big Dam and Mary Reservoir support the arid region's land use. Transportation is anchored by local connectors like Oilmont Hwy and several named gravel routes, including Gus Blaze Rd and Markuson Rd, which follow the section lines of this northern Montana landscape.