1949 Map of St. Clair Flats
Loading...
Loading map...

1949 Map of St. Clair Flats

USGS Topo · Published 1949

About this map

Harsens Island and the intricate labyrinth of the St. Clair River delta dominate this 1937 survey. The landscape is defined by a dense network of narrow waterways and cuts, such as Chenal Ecarte and Broad Cut, which separate numerous marshy islands and peninsulas before they open into Lake St. Clair. Along the South Channel, the settlement of Riverside and several prominent social hubs like the Old Club and St Clair Flats Club indicate the area's development as a premier maritime recreational destination. The map illustrates the complex international boundary where St Clair Co meets Ontario, tracing the United States Canada line through the deep water of the South Channel. Notable landforms like Dickinson Island and the long sweep of Muscamoot Ridge show the fragile, shifting geography of this freshwater delta.


Find a feature on this map

79 named features on this map. Tap any name to fly to it.

Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.


Map Details

Date Portrayed1949
Date Published1949
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.94 x 27.24 inches

Editions of this 1949 St. Clair Flats Map


Historical Maps of Middle Island Through Time

74 maps found


Featured Locations


Source Details

CopyrightPublic Domain