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2020 Map of Collins Rim

Name: 2020 Topographic Map of Collins Rim
Creator: U.S. Geological Survey
Published: 2020
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2020

About this map

The Fremont National Forest dominates this high-altitude landscape in Lake County, where the dramatic Collins Rim drops toward the basin of Big Valley. This 2020 survey illustrates a complex network of water management features essential for ranching and wildlife in the high desert, including the O'Keefe Reservoir system and several numbered reservoirs such as Lane Reservoir Number Four. Natural water sources like Moss Springs and Rim Rock Spring are scattered across the terrain, feeding into seasonal drainages like Twentymile Cr and Fifteenmile Cr.

The presence of named landmarks such as Round Mtn and the deep incision of Long Canyon highlights the topographic diversity of the region. This modern map serves as a vital record for understanding the hydrological and transport infrastructure of this area, where remote forest development roads like Natl Forest Develop Road 4019 Rd provide the primary access through the timber and rimrock country.