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1892 Map of Bisuka

Name: 1892 Topographic Map of Bisuka
Creator: U.S. Geological Survey
Published: 1892
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1892

About this map

The Oregon Short Line Railroad cuts a definitive path across this high desert landscape, connecting early settlements like Kuna, Mora, and the namesake Bisuka during the late nineteenth century. This 1890 survey illustrates the stark geographic transition between the plateaus of Ada and the canyon-cut lands of Owyhee. The Snake River serves as the dominant natural boundary, winding through steep terrain marked by volcanic features such as Basalt Butte and Castle Butte.

Of particular importance to surveyors and local historians is Initial Point, the principal reference for the Boise Meridian, which is clearly identified here. South of the river, the settlement of Oreana sits near Castle Creek, representing one of the few established outposts in a territory defined more by its drainage systems—including Indian Creek and Sinker Cr—than by urban density. The map captures a moment when rail transport was beginning to reshape the high plains of southern Idaho.