
The northwest shoreline of Clear Lake serves as a primary hub of recreation and conservation in northern Iowa during the early 1970s. The settlements of Ventura and Ventura Heights anchor the western edge of the water, where the Ventura Marsh State Game Management Area provides a distinct ecological boundary between the lake and the agricultural lands of Hancock and Cerro Gordo Counties.
22 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1954 · Mason City
USGS Topo · 1:250,000
1954 · Waterloo
USGS Topo · 1:250,000
1955 · Waterloo
USGS Topo · 1:250,000
1957 · Mason City
USGS Topo · 1:250,000
1958 · Mason City
USGS Topo · 1:250,000
1972 · Clear Lake West
USGS Topo · 1:24,000
1972 · Thornton
USGS Topo · 1:24,000
1972 · Swaledale
USGS Topo · 1:24,000
1972 · Burchinal
USGS Topo · 1:24,000
1972 · Clear Lake East
USGS Topo · 1:24,000