1981 Map of Clear Lake
USGS Topo · Published 1981About this map
The Sangamon River carves a complex course through this portion of Cass County, creating a mosaic of backwaters, sloughs, and lakes. The Sanganois State Conservation Area dominates the northern half of the landscape, protecting a labyrinthine network of water bodies such as Eagle Lake, Chain Lake, and Crane Lake. This intricate wetland environment, including Cuba Island and Knapps Island, underscores the historical importance of the river’s natural flood cycle before modern hydrologic modifications changed the surrounding Illinois plains.
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Map Details
Editions of this 1981 Clear Lake Map
This is the sole edition of this map. No revisions or reprints were ever made.
Historical Maps of Browning Through Time
24 maps found
1981 Clear Lake
Cass County, IL
1981 Newmansville
Cass County, IL
1983 Arenzville East
Cass County, IL
1983 Arenzville West
Cass County, IL
2012 Arenzville East
Cass County, IL
2012 Arenzville West
Cass County, IL
2012 Clear Lake
Cass County, IL
2012 Newmansville
Cass County, IL
2015 Arenzville East
Cass County, IL
2015 Arenzville West
Cass County, IL
2015 Clear Lake
Cass County, IL
2015 Newmansville
Cass County, IL
2018 Arenzville East
Cass County, IL
2018 Arenzville West
Cass County, IL
2018 Clear Lake
Cass County, IL
2018 Newmansville
Cass County, IL
2021 Arenzville East
Cass County, IL
2021 Arenzville West
Cass County, IL
2021 Clear Lake
Cass County, IL
2021 Newmansville
Cass County, IL
2024 Arenzville East
Cass County, IL
2024 Arenzville West
Cass County, IL
2024 Clear Lake
Cass County, IL
2024 Newmansville
Cass County, IL