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1985 Map of Sigma, 1986 Print
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1985 Map of Sigma

USGS Topo · Published 1986

About this map

The Pere Marquette State Forest dominates this Kalkaska County landscape, where the headwaters of the Boardman River and the North Branch Manistee River carve through a network of wetlands. Small settlements like Sigma, Cotton, and Spencer are linked by a grid of rural roads and forest grades, reflecting the region's history of logging and early 20th-century agriculture. The presence of numerous gas wells and a gravel pit suggests the mid-century industrial shift toward resource extraction. Natural features like Crawford Lake and Kniss Lake are interspersed with extensive cedar and tamarack swamps such as Schlemmer Swamp and Riley Swamp, providing a detailed view of the glacial drainage patterns that define this part of Northern Michigan. A local cemetery and the Radio Tower WGTV provide specific landmarks for genealogists and local historians.

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Map Details

Date Portrayed1985
Date Published1986
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22 x 26.9 inches

Editions of this 1985 Sigma Map

This is the sole edition of this map. No revisions or reprints were ever made.

Historical Maps of Sigma Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain