
The Thompson River and Weldon River valley systems dominate this 1984 survey of northwestern Grundy County. The landscape is defined by the winding paths of these waterways, particularly where the Old Channel Thompson River and another Old Channel near the Weldon River show the natural migration of riverbeds over time. The small settlement of Brimson sits near the confluence of Sugar Creek and the Thompson River, serving as a focal point for the surrounding rural townships of Washington, Taylor, and Harrison.
18 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.
1925 · Gilman
USGS Topo · 1:62,500
1946 · Gilman
USGS Topo · 1:48,000
1946 · Princeton
USGS Topo · 1:62,500
1947 · Blythedale
USGS Topo · 1:62,500
1948 · Gilman
USGS Topo · 1:62,500
1948 · Princeton
USGS Topo · 1:62,500
1948 · Trenton
USGS Topo · 1:62,500
1954 · Centerville
USGS Topo · 1:250,000
1957 · Centerville
USGS Topo · 1:250,000
1958 · Centerville
USGS Topo · 1:250,000