The Fremont Powerhouse Historic District

The Fremont Powerhouse Historic District (HM20LL)

Location: Sumpter, OR 97877 Grant County
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Country: United States of America
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N 44° 47.792', W 118° 29.873'

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History written by nature and people

Natural landforms gave local settlers an opportunity to shape history. As you explore the remains of the gold rush era, consider the partnership of people and nature.

A lake the ice forgot
When the Ice Age glaciers melted, they left behind Olive Lake, and ideal resource for producing electricity. The melting glaciers had left behind a pile of rocks, or moraine, that formed a natural dam. Engineers enlarged the dam using the log-crib earthfill method, making the lake bigger.

Water fall, current flows Lake water was sent downstream to the powerhouse in an eight mile wooden pipe, constructed of redwood and steel bands. The wood was carefully milled and fitted with tongue and groove joints that swelled into a watertight joint. The force of gravity from falling water was used to generate electricity.

Power to the people
The Fremont Powerhouse was built in 1908 to produce electricity for nearby mines and towns. The powerhouse was operated until 1967 when it was closed and donated to the United States Forest Service.
HM NumberHM20LL
Marker ConditionNo reports yet
Date Added Thursday, August 10th, 2017 at 10:01am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)11T E 381526 N 4961439
Decimal Degrees44.79653333, -118.49788333
Degrees and Decimal MinutesN 44° 47.792', W 118° 29.873'
Degrees, Minutes and Seconds44° 47' 47.52" N, 118° 29' 52.38" W
Driving DirectionsGoogle Maps
Area Code(s)541
Closest Postal AddressAt or near Grant County Rd 24, Sumpter OR 97877, US
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