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2024 Map of Posy Valley

Name: 2024 Topographic Map of Posy Valley
Creator: U.S. Geological Survey
Published: 2024
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2024

About this map

Pine Valley and the smaller Posy Valley dominate this landscape near the Oregon-Idaho border, where water management is central to the settlement pattern. Irrigation infrastructure like the McMullen Ditch and Posy Valley Ditch underscores the region's agricultural foundations, feeding from Pine Creek across the valley floor. The settlement of Pine serves as a local hub, supported by the Pine Valley Airport, while the remote eastern reaches are defined by numerous drainages such as Deer Creek and Dry Creek.

The southern portion of the map is defined by the massive Brownlee Reservoir on the Snake River, a feature that fundamentally altered the geography of the borderlands. At the edge of these waters lies Robinette, positioned near the junction of multiple gulches including Tarter Gulch and Ruth Gulch. The elevation rises sharply toward the northeast at Officer Butte, overlooking a network of upland reservoirs like Crow Reservoir and Densley Reservoir that capture seasonal runoff from the surrounding canyons.