Sparr serves as the central settlement point in this section of Otsego County, where the Upper Peninsula's hydrology begins to take shape through the headwaters of several significant drainage systems. The landscape is defined by the winding course of the Pigeon River and its South Branch, which cut through a terrain of glacial depressions and ridges such as Alpine Ridge and Midway Pass. To the south, larger bodies of water including Big Lake and Kassuba Lake dominate the geography, while Lake Fifteen sits isolated in the central-east. The road network, comprising local routes like Whitmarsh Rd and Seymore Rd, follows the section lines of the Public Land Survey System, revealing a transition from agricultural plots to the more densely wooded wetlands characteristic of the northern Michigan interior.
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1949 · Lewiston
USGS Topo · 1:62,500
1949 · Otsego Lake
USGS Topo · 1:62,500
1950 · Johannesburg
USGS Topo · 1:24,000
1950 · Turtle Lake
USGS Topo · 1:24,000
1951 · Turtle Lake
USGS Topo · 1:24,000
1951 · Otsego Lake
USGS Topo · 1:24,000
1951 · Johannesburg
USGS Topo · 1:24,000
1954 · Gaylord
USGS Topo · 1:62,500
1954 · Hetherton
USGS Topo · 1:62,500
1954 · Traverse City
USGS Topo · 1:250,000