
Maginnis Creek and its northern branch flow through this sparsely developed section of Petroleum County, where the landscape is defined by intermittent water sources and dramatic topographic shifts. The presence of Circle Bar Spring in the northern reaches and Mud Spring further south highlights the critical importance of these isolated watering points in a region otherwise dominated by drainages like Mud Springs Creek. As the terrain drops toward the Salt Sage Coulee, the map reveals a remote pastoral environment structured by the Public Land Survey System, with township and range lines marking the transition from the Petroleum and Musselshell county boundary. This 2024 data provides a clear record of the modern rural infrastructure and water features that continue to dictate the utility of this Montana landscape.
13 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1954 · Forsyth
USGS Topo · 1:250,000
1954 · Roundup
USGS Topo · 1:250,000
1957 · Forsyth
USGS Topo · 1:250,000
1958 · Roundup
USGS Topo · 1:250,000
1958 · Forsyth
USGS Topo · 1:250,000
1962 · Mosby
USGS Topo · 1:24,000
1962 · Maxwell Ranch
USGS Topo · 1:24,000
1962 · Melstone NW
USGS Topo · 1:24,000
1963 · Kelley
USGS Topo · 1:24,000
1963 · Petrolia Lake
USGS Topo · 1:24,000