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2017 Map of Cottonwood Reservoir

Name: 2017 Topographic Map of Cottonwood Reservoir
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

Otis Valley serves as a focal point in this high-desert landscape of eastern Oregon, where water management is central to the local geography. The map documents significant hydrological infrastructure, including Cottonwood Reservoir and the Se-ng-abi Huudi Reservoir, alongside smaller interventions like the Altnow Ditch. These features suggest a history of ranching and resource management in a region defined by scattered springs such as Antelope Spring and Dipping Vat Spring.

The northern portion of the quadrangle is occupied by the Malheur National Forest, where the terrain transitions from the open Beede Desert to more varied topography. Notable natural landmarks such as Rocky Basin and Mill Gulch provide specific reference points for researchers. The road network, primarily the Crane-Prairie-Drewsey Rd, connects these remote water sources and grazing lands, illustrating the sparse but vital transport patterns of Harney County.