1971 Map of Decker Lake

About this map

Chippewa National Forest and the Birch Lake State Forest dominate this early 1970s orthophotomap, showing a dense mosaic of northern Minnesota wetlands and timber. The landscape is defined by its complex hydrography, where the Third River flows near Decker Lake and Coleman Lake. Unlike traditional line-drawn topographic maps, this orthophotomap uses aerial photography to reveal the actual texture of the forest cover and the precise edges of the marshes surrounding Skimerhorn Lake and Chinaman Lake. The boundary between Beltrami and Itasca counties cuts through this wooded interior, highlighting the remote nature of the region. This document captures the wilderness character of the area before modern developments, preserving the exact footprint of the Moose Park and Summit forest management zones during a period of active conservation mapping.