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1990 Map of Miller Flat

Name: 1990 Topographic Map of Miller Flat
Creator: U.S. Geological Survey
Published: 1990
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1990

About this map

Rudio Mountain dominates this portion of Grant County, where high plateaus and complex drainage systems define the landscape of the late twentieth century. To the southwest, the boundary of the John Day Fossil Beds National Monument edges into the frame, protecting world-renowned paleontological resources near Branson Creek. The map documents a network of seasonal water sources and livestock-related landmarks, such as Burnt Corral Springs, Sand Spring, and Rimrock Spring, which were vital for the high-country ranching operations common in this region.

Settlement is sparse, represented by seasonal or specialized sites like Saddle Camp and Rudio Mdws. The terrain transitions from the broad expanse of Miller Flat and Sunflower Flat into a labyrinth of canyons carved by Rudio Creek, Burnt Corral Creek, and Sunflower Creek. These features illustrate the traditional land use patterns of eastern Oregon, where movement was dictated by the availability of water and the accessibility of grazing lands between the mountain ridges.