The Agassiz Pool and its complex network of managed wetlands dominate this landscape in Marshall County. This region is defined by an intricate system of pools and reservoirs, including the Northwest Pool, Madsen Pool, and the Green Stump Pool. These water bodies are connected by a grid of rural roads such as CO Hwy 7 and local routes like 330th St NE, which cut across the low-lying terrain. The presence of the Lansing Parker Reservoir and Madsen Reservoir suggests a heavily managed hydraulic environment, likely supporting wildlife conservation or agricultural irrigation. Farther south, the Rodahl Trail and the winding course of the Thief River provide a contrast to the geometric precision of the township and range survey lines that dictate the local road network.
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This is the sole edition of this map. No revisions or reprints were ever made.
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