
Flatwillow Creek winds through this section of Petroleum County, where the landscape is defined by the drainage networks of central Montana. The presence of Box Elder Creek and Gorman Coulee in the north, alongside North Maginnis Creek to the south, illustrates a rugged terrain carved by seasonal water flow. This modern U.S. Geological Survey representation documents the contemporary state of these ancient watercourses and the modest transportation infrastructure, such as Petrolia Bench Rd, that serves the region's ranching and agricultural interests. Large-scale topographic relief is captured through detailed contouring at Anderson Coulee, providing researchers a precise look at the landforms as they stand today.
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This is the sole edition of this map. No revisions or reprints were ever made.
1954 · Jordan
USGS Topo · 1:250,000
1954 · Forsyth
USGS Topo · 1:250,000
1954 · Roundup
USGS Topo · 1:250,000
1954 · Lewistown
USGS Topo · 1:250,000
1956 · Jordan
USGS Topo · 1:250,000
1957 · Forsyth
USGS Topo · 1:250,000
1958 · Jordan
USGS Topo · 1:250,000
1958 · Roundup
USGS Topo · 1:250,000
1958 · Forsyth
USGS Topo · 1:250,000
1959 · Lewistown
USGS Topo · 1:250,000