2011 Map of Johnson Reservoir

About this map

The North Fork Deer Creek, Middle Fork Deer Creek, and South Fork Deer Creek converge across this Dawson County landscape, creating a drainage system that defines the local topography. This 2011 survey illustrates the management of these waterways through infrastructure like the Johnson Reservoir Dam, which contains the Johnson Reservoir. Farther north, the Tillman Number 1 Dam sits along a tributary of Lower Sevenmile Creek. The area is interlaced with a rural grid of numbered thoroughfares, including Road 442 and Road 435, which serve the expansive ranching and agricultural lands of eastern Montana. The map provides a clear look at the intersection of natural hydrology and small-scale water storage projects in this part of the Great Plains.