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2020 Map of Threemile Hill

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

USGS Topo · Published 2020

About this map

Jordan Creek and its associated irrigation network form the central axis of this landscape in Malheur County. The presence of the N Side Canal and S Side Canal underscores a managed water system designed to support life in the high desert. Historical transportation routes are prominent, with the Old Ion Hwy and Lava Beds Rd cutting across the terrain, indicating the pathways used to navigate this corner of Oregon.

Distinctive geological and local landmarks provide specific points of reference for researchers, from the elevation of Threemile Hill to named features like Dixons Rock and Holdup Rock. The map also identifies several critical water catchments, such as Alkali Reservoir and Saddle Butte Reservoir, which are vital in this arid environment. The inclusion of the Lequerica Trap offers a specific locational detail of interest to those studying local land use and range history.