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2023 Map of Sigma, 2023 Print
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2023 Map of Sigma

USGS Topo · Published 2023

About this map

Sigma and its surrounding townships in Kalkaska County are defined by a complex mosaic of wetlands and glaciated terrain in the upper reaches of the North Branch Manistee River. Small agricultural and timber-based settlements like Cotton, Angling, and Spencer dot the landscape, connected by a network of county roads and historic corridors such as Number 16 RR SE. This survey reveals the significant role of groundwater in the local environment, evidenced by named wetlands like O'Neil Swamp, Riley Swamp, and Sigma Swamp which feed the area's tributaries.

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Map Details

Date Portrayed2023
Date Published2023
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions24 x 29 inches

Editions of this 2023 Sigma Map

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

Historical Maps of O'Neil Through Time

55 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain