2023 Map of Sigma
USGS Topo · Published 2023About 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
Editions of this 2023 Sigma Map
This is the sole edition of this map. No revisions or reprints were ever made.
Other maps of this area
1949 · Black Creek
USGS Topo · 1:24,000
1949 · Fletcher
USGS Topo · 1:62,500
1950 · Fletcher
USGS Topo · 1:24,000
1954 · Traverse City
USGS Topo · 1:250,000
1956 · Alba
USGS Topo · 1:62,500
1956 · Mancelona
USGS Topo · 1:62,500
1956 · Kalkaska
USGS Topo · 1:62,500
1958 · Traverse City
USGS Topo · 1:250,000
1983 · Traverse City
USGS Topo · 1:100,000
1983 · Grayling
USGS Topo · 1:100,000
Featured Places
- O'Neil, Oliver Township
- Oliver Township, MI
- Spencer, Orange Township
- Angling, Oliver Township
- Cotton, Excelsior Township