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2015 Map of Harper Canyon

Name: 2015 Topographic Map of Harper Canyon
Creator: U.S. Geological Survey
Published: 2015
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2015

About this map

The Vallecito Mountains dominate the central portion of this landscape, creating a complex series of drainage patterns and high-desert flats. In the northeast, the settlement of Little Borrego sits at the edge of the Lower Borrego Valley, where a small grid of streets including Alvarado St and Broadway meet Split Mountain Rd. This area serves as a transition from the structured town layout to the vast alluvial fans of the desert floor.

Water sources and erosion have defined the local geography, evidenced by the numerous drainage features such as Alma Wash, Olla Wash, and Fish Creek Wash. These dry riverbeds cut through the arid terrain, leading toward distinctive landmarks like the Mud Palisades in the southwest and the secluded Dave McCain Spring. Between the steep mountain slopes lie elevated basins including Harper Flat and Hapaha Flat, which illustrate the high-altitude topography of San Diego County's inland desert reaches.