Marker Logo HMdb.org THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Near Mt Baldy Village in Los Angeles County, California — The American West (Pacific Coastal)
 

Pomona Water Power Plant

 
 
Pomona Water Power Plant Marker image. Click for full size.
By Joseph Beeman, March 8, 2006
1. Pomona Water Power Plant Marker
Inscription. The first hydroelectric installation in California for long-distance transmission of alternating current at high voltage was built in 1892 on San Antonio Creek below this spot by the San Antonio Light and Power Company organized by Dr. Cyrus Grandison Baldwin, President of Pomona College. The first high-voltage transformers built by George Westinghouse for this installation provided for transmission of 10,000 volts from this plant to Pomona.
 
Erected 1955 by California State Park Commission and The Historic Society of Pomona Valley. (Marker Number 514.)
 
Marker series. This marker is included in the California Historical Landmarks marker series.
 
Location. 34° 12.735′ N, 117° 40.564′ W. Marker is near Mt Baldy Village, California, in Los Angeles County. Marker is on Mt Baldy Road (at milepost 2), 3 miles north of North Mountain Avenue, on the right when traveling north. Click for map. Marker is in San Antonio Canyon, north of Upland, near the county line with San Bernadino County and just outside of the San Bernadino National Forest. Marker is in this post office area: Mt Baldy CA 91759, United States of America.
 
Other nearby markers. At least 5 other markers are within 9 miles of this marker, measured
Pomona Water Power Plant Monument image. Click for full size.
By Joseph Beeman, March 8, 2006
2. Pomona Water Power Plant Monument
as the crow flies. Madonna of the Trail (approx. 7.4 miles away); George Chaffey, Jr. (approx. 8 miles away); Bear Gulch (approx. 8 miles away); Red Hill (approx. 8.2 miles away); Tapia Adobe Site (approx. 8.2 miles away).
 
Also see . . .  San Antonio Power Plant. From the San Bernadino Valley Electric History site. (Submitted on March 9, 2006.) 
 
Categories. Industry & CommerceNotable Events
 
In The Snow image. Click for full size.
By Joseph Beeman, March 11, 2006
3. In The Snow
 
 
Credits. This page originally submitted on , by Joseph Beeman of Upland, California. This page has been viewed 2,332 times since then and 34 times this year. Last updated on , by Joseph Beeman of Upland, California. Photos:   1, 2. submitted on , by Joseph Beeman of Upland, California.   3. submitted on , by Joseph Beeman of Upland, California. • J. J. Prats was the editor who published this page. This page was last revised on June 16, 2016.
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