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1972 Map of Lake Helena, 1975 Print
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1972 Map of Lake Helena

USGS Topo · Published 1975

About this map

Lake Helena sits at the center of this Montana landscape, where the confluence of Tenmile Creek, Silver Creek, and Prickly Pear Creek forms a broad riparian basin. The early 1970s marked a period of significant water management in the valley, evidenced by the extensive Helena Valley Canal and the Helena Valley Regulating Reservoir near the Missouri River. These irrigation systems supported a growing rural community, linking the agricultural flats with the northern reaches of the Helena National Forest.

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Map Details

Date Portrayed1972
Date Published1975
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22.1 x 27 inches

Editions of this 1972 Lake Helena Map

Historical Maps of Lewis and Clark County Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain