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2020 Map of Inkom

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

USGS Topo · Published 2020

About this map

The Portneuf River carves a critical corridor through the mountainous terrain of Bannock County, anchoring the settlements of Inkom and Blackrock. This landscape is defined by the sharp transition from the urban edge of Pocatello to the high elevations of the Pocatello Range and Caribou National Forest. Transportation routes such as N Old Hwy 91 and W Old Highway 91 follow the natural contours of the river valley, mirroring the historic paths used for regional commerce.

High-altitude landmarks like Chinese Peak and Indian Mtn overlook a complex network of drainages and springs, including Fort Hall Spring and Munn Spring. The map documents the intricate gulches and canyons, such as Ames Gulch and Caddy Canyon, that funnel water toward the valley floor. This 2020 survey provides a modern look at how infrastructure like the Blackrock Canyon Rd manages the steep topography between the valley and the surrounding forest peaks.