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2011 Map of Drinkwater Pass

Name: 2011 Topographic Map of Drinkwater Pass
Creator: U.S. Geological Survey
Published: 2011
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2011

About this map

The Malheur River flows through the ranching country of eastern Oregon, carving the broad Drewsey Valley near the small community of Drewsey. This 2011 survey documents a landscape defined by the management of water for livestock and agriculture, featuring numerous irrigation structures such as the Drewsey Reclamation Company Ditch, Stallard Ditch, and Williams Ditch. The settlement of Drewsey remains the local hub, complete with the Drewsey Post Office and a network of county roads leading to isolated properties like Stallard Ranch and Altnow Ranch.

High plateaus and geographic landmarks frame the basin, including Drewsey Table and the namesake Drinkwater Pass to the east. The map captures a high-desert environment where life centers around reliable water sources like Altnow Reservoir, Riley Reservoir, and natural outlets such as Weatherly Spring and Cook Spring. Many of these features, particularly the named springs and ranch sites, provide essential data points for local historians and genealogists tracking family land use in Harney County.