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2020 Map of Grasshopper Flat North

Name: 2020 Topographic Map of Grasshopper Flat North
Creator: U.S. Geological Survey
Published: 2020
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2020

About this map

Grasshopper Flat and the surrounding high desert plateau define this high-altitude landscape in Malheur County. The map details a complex network of seasonal water management systems and drainage basins essential for ranching and land use in this arid region. High-country drainage flows through numerous named creeks such as Rattlesnake Cr, Little Antelope Cr, and Big Antelope Cr.

Remote ranching infrastructure is the primary human footprint here, visible through named impoundments such as Horse Brush Reservoir, Flat Tire Reservoir, and Santy Reservoir. These water sources are connected by a sparse network of unpaved roads, including Potomac Ranch Rd and Pole Creek Rd, which provide access across the rolling terrain between High Ridge and the lower basin flats. The placement of Rattlesnake Reservoir Number 2 and Junction Reservoir illustrates the careful engineering of natural watersheds in this corner of eastern Oregon.