
St. Marie anchors the southwestern corner of this Valley County landscape, a modern settlement established in a high plains environment defined by intermittent drainages and coulees. The terrain is shaped by the Calderwood Hills and the broad Porcupine Valley, where the winding course of Porcupine Creek and Dry Fork Creek cut through the arid soil. Human adaptation to this environment is evident in the water management features like Middle Reservoir and the naming of local water sources such as Olson Springs and Potter Spring. This 2024 survey reflects the modern agricultural and residential layout of the region, where township lines like t31n r41e organize a territory otherwise characterized by natural landmarks such as Enright Coulee and Hoy Coulee.
17 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.
1918 · Porcupine Valley
USGS Topo · 1:62,500
1919 · Boundary
USGS Topo · 1:125,000
1943 · Glasgow
USGS Topo · 1:125,000
1954 · Glasgow
USGS Topo · 1:250,000
1957 · Glasgow
USGS Topo · 1:250,000
1958 · Glasgow
USGS Topo · 1:250,000
1969 · Chapman Coulee NE
USGS Topo · 1:24,000
1969 · Hawk Coulee
USGS Topo · 1:24,000
1973 · Baylor SE
USGS Topo · 1:24,000
1973 · Cameron Point
USGS Topo · 1:24,000