2017 Map of Cactus Flat

About this map

The Marias River carves a deep, winding path through this northern Montana landscape, marking the natural boundary between Toole and Pondera Counties. This 2017 survey reveals a terrain defined by dramatic breaks and coulees, most notably Millar Coulee, which descend toward the river's entrenched valley. Away from the river bluffs, the high plains of Cactus Flat are structured by a grid of rural access roads like Hjartarson Rd and McCormic Rd, reflecting the area's agricultural use. To the south, the presence of the AN Canal and the waters of Heron Lake near Blue Heron Ln point to the region's managed water systems that support livestock and farming in this high-altitude environment.