Northwest Pool dominates the northeastern landscape of this Marshall County survey, illustrating the extensive wetland and drainage systems typical of the Red River Valley’s eastern edge. The topography is exceptionally level, defined primarily by a rigid grid of section-line roads and the winding course of the Thief River in the southwestern corner. Local travel and access to the marshy lowlands are facilitated by routes such as Co Hwy 7 and the NW Pool Rd, which skirts the edge of the large pool. Farther south, the Rodahl Trail provides a break from the standard township grid, hinting at older patterns of movement across the prairie. This 2019 data reflects a sparsely populated agricultural and conservation-focused region, where the intersection of drainage engineering and township boundaries, like t156n r42w, dictates the human footprint on the land.
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1918 · Rollis
USGS Topo · 1:62,500
1918 · Middle River
USGS Topo · 1:62,500
1943 · Rollis
USGS Topo · 1:62,500
1943 · Thief River Falls
USGS Topo · 1:62,500
1952 · Thief River Falls
USGS Topo · 1:250,000
1954 · Roseau
USGS Topo · 1:250,000
1956 · Thief River Falls
USGS Topo · 1:250,000
1957 · Roseau
USGS Topo · 1:250,000
1957 · Thief River Falls
USGS Topo · 1:250,000
1958 · Roseau
USGS Topo · 1:250,000