Loading map...

1969 Map of Egan Basin

Name: 1969 Topographic Map of Egan Basin
Creator: U.S. Geological Survey
Published: 1973
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1973

About this map

The Bear River Range dominates this 1969 survey, where the high-altitude terrain of the Cache National Forest straddles the Idaho and Utah border. This landscape is defined by its complex drainage patterns and tectonic features, most notably the presence of Minnetonka Cave in the northeastern corner and a series of karst depressions simply labeled the Sinks. Water sources are abundant but localized, with high-mountain catchments like Blue Lake, Horse Lake, and Hidden Lake feeding the headwaters of major regional systems.

Transportation through this high country in the late 1960s relied heavily on a network of Pack Trails and Jeep Trails connecting historic gaps such as Danish Pass. These routes navigate between the Logan River and Bear River basins, providing access for forest management and recreation. The map meticulously records the intersection of Franklin County, Bear Lake County, and Cache County, offering a detailed view of the tri-county boundary area before modern infrastructure arrived.