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1990 Map of Steele Swamp
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1990 Map of Steele Swamp

USGS Topo · Published 1990

About this map

Grohs Ranch and Steele Swamp Ranch sit within a high-elevation landscape defined by the intersection of the Modoc National Forest and Fremont National Forest. This 1990 provisional survey documents the rugged borderlands where California meets Oregon, marked by a series of state boundary monuments from State Bdy Mon #43 to State Bdy Mon #48. The terrain is characterized by broad seasonal basins and drainages, most notably the Steele Swamp and Fourmile Valley. Water management is evident through features like the Fourmile Reservoir and numerous stock ponds, supporting the ranching operations that have long persisted in this remote corner of Modoc County. The map provides a clear record of the hydrological network, including the headwaters of Boles Creek and the meandering path of Willow Creek as it flows past Bird Spring Ridge.

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Map Details

Date Portrayed1990
Date Published1990
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.9 x 26.7 inches

Editions of this 1990 Steele Swamp 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