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1960 Map of Mount Si, 1962 Print
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1960 Map of Mount Si

USGS Topo · Published 1962

About this map

The North Fork Tolt River and its southern counterpart dominate the northern half of this landscape, managed as the Tolt-Seattle Water Supply Reservoir. This 1960 field-checked survey highlights the industrial and recreational footprint within the Snoqualmie National Forest, ranging from the small settlement at Ernies Grove to high-elevation extractive sites. The eastern ridges are marked by several mining operations, including the Lennox Mines, Apex Mine, and Blackhawk Mine, which are situated near Prospectors Ridge.

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Map Details

Date Portrayed1960
Date Published1962
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:62,500
Physical Dimensions17 x 20.9 inches

Editions of this 1960 Mount Si Map

Historical Maps of Ernies Grove Through Time

63 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain