1954 Map of Thompson Lake

About this map

The Cloquet River and its complex network of tributaries define this northern Minnesota landscape within the Cloquet Valley State Forest. This 1954 survey, later photorevised in 1969, captures the intricate hydrology of the region as it transitions into the expansive Island Lake Reservoir. The map illustrates a wilderness area structured by the boundaries of Gnesen and Normanna townships, where glacial activity has left behind a dense concentration of water bodies including Thompson Lake, Alden Lake, and Mouse Lake. This environment reveals a pattern of mid-century conservation and land management, with the state forest designation protecting the timber and watersheds that feed the St. Louis River system. From the winding Little Cloquet River to the smaller Spring Lake and Lost Lake, the sheet provides a meticulous record of the wetlands and forest roads that supported the local timber and recreational economy before significant modern development.