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1988 Map of Obenchain Mtn

Name: 1988 Topographic Map of Obenchain Mtn
Creator: U.S. Geological Survey
Published: 1988
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1988

About this map

Derby and the surrounding Jackson County timberlands are defined by the legacy of early 20th-century transportation and water management. The infrastructure of the Medford Old RR Grade (also labeled as the Old Railroad Grade) wind through the valley, marking the historical path of the Pacific and Eastern Railway which once served the region's logging industry. Near the former community of Derby, researchers will find the noted Derby Station (Site), along with scattered Ruins that hint at early homesteads or logging camps.

The high ground is anchored by Obenchain Mountain and Joe Dyer Butte, while the water system is highlighted by the Indian Lake Reservoir and an extensive Aqueduct that traverses the central terrain. This landscape is a network of named drainages like Big Butte Creek and Crowfoot Creek, showing a transition from steep buttes to the flats used for irrigation and resource extraction in the late 1980s.