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2014 Map of Sevenmile Creek

Name: 2014 Topographic Map of Sevenmile Creek
Creator: U.S. Geological Survey
Published: 2014
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2014

About this map

Sevenmile Creek and its many tributaries carve a network of deep drainage basins through this portion of Umatilla County, Oregon. The landscape is defined by high plateau features such as Rankin Flats and the prominent Rocky Ridge, which separates the northern flow of Little McKay Cr from the southern drainages. These canyons, including Timene Canyon and McDonald Canyon, illustrate a classic western watershed pattern where seasonal streams like Stewart Cr and Ray Cr dictate the topography.

Evidence of historical access is found along the narrow ridges and canyon floors, where Stewart Creek Rd and Rocky Ridge Rd follow the natural contours of the land. These routes connect remote landmarks like Porter Hill and Little Wood Hollow, serving as essential infrastructure for land management and ranching in the early 21st century. The map also detailes the upper reaches of the Birch Creek system, specifically East Birch Cr and Pearson Cr, highlighting the vital water resources in this arid environment.