Loading map...

2018 Map of Shell Reef

Name: 2018 Topographic Map of Shell Reef
Creator: U.S. Geological Survey
Published: 2018
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2018

About this map

Shell Reef stands as the central topographic landmark in this desert landscape, which straddles the boundary between San Diego and Imperial Counties. The terrain is defined by a network of seasonal drainage patterns, including the wide Tule Wash and Arroyo Salado to the north, and San Felipe Creek in the south. These ephemeral waterways create a complex system of alluvial fans and washes, such as Tarantula Wash and Palo Verde Wash, that dictate the movement of water through this arid portion of the Imperial Valley.

Water sources are rare but critical points of interest on this 2018 survey, represented by Five Palms Spring and Barrel Spring. The presence of these named springs suggests their enduring importance for local navigation and history. In the southwest, Squaw Peak provides a distinct elevation point near the Kunklen road, one of the few named transit markers in an otherwise open and undeveloped expanse.