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1993 Map of Umatilla

Name: 1993 Topographic Map of Umatilla
Creator: U.S. Geological Survey
Published: 1993
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1993

About this map

McNary Lock and Dam serves as the focal point of the Columbia River corridor, marking the border between Washington and Oregon where Lake Wallula meets Lake Umatilla. The area is defined by a sophisticated hydraulic landscape, including the Powerhouse, a Fish Viewing Station, and an extensive network of irrigation infrastructure such as the Three Mile Falls Diversion Works and various named ditches and lateral canals.

Settlement patterns reveal a mix of established towns and smaller developments like Umatilla, McNary, and Power City. Local topography is characterized by prominent basalt features such as Sillusi Butte and the winding Coyote Coulee, contrasting with the engineered shoreline of the river. Genealogists can locate Sunset Hills Cem and smaller residential pockets like Charlestown and Sharps Corner, while the presence of the Umatilla Depot Activity highlights the regional importance of military and logistics operations during the late twentieth century.