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2018 Map of Black River B-4 SW, 2018 Print
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2018 Map of Black River B-4 SW

USGS Topo · Published 2018

About this map

Glacial landforms and intricate drainage patterns define this interior Alaskan landscape in the T18n R23e and T17n R23e township blocks. This 2018 survey reveals a terrain shaped by water and elevation, dominated by countless small ponds and winding stream beds that weave between low-lying ridges. The absence of named settlements or infrastructure highlights the wilderness character of the Yukon-Koyukuk region, where land is primarily delineated by the Public Land Survey System grids of T18n R22e and T17n R22e. This map serves as a precise record of the natural topography and wetlands as they existed in the early 21st century, providing essential data for studying hydrologic changes and land management in this undisturbed section of the Black River quadrangle.

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Map Details

Date Portrayed2018
Date Published2018
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:25,000
Physical Dimensions24 x 29 inches

Editions of this 2018 Black River B-4 SW Map

This is the sole edition of this map. No revisions or reprints were ever made.

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain