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2020 Map of Comb Rock

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

USGS Topo · Published 2020

About this map

Dearborn River and its multiple forks carve through this section of Lewis and Clark County, defining a landscape of high basins and named peaks. The presence of the Dearborn Cem near Jeffries Cr provides a primary point of interest for genealogists tracing early families in this drainage. The terrain is marked by significant geological formations such as Comb Rock, Black Rock, and the distinctive Painted Hill located south of Game Coulee.

Irrigation infrastructure is visible through the Gibson Rennig Ditch, reflecting the management of water resources in the valley. High-elevation landmarks like Limekiln Mtn and The Reef tower over the S Fork Dearborn River, while Deadman Cr and Auchard Cr drain the eastern slopes. This topography, including the remote Nicholas Basin, illustrates the complex hydrologic and geologic character of the region.