Pomona Water Power Plant

Pomona Water Power Plant (HMC4)

Location: Claremont, CA 91711 Los Angeles County
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Country: United States of America
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N 34° 12.735', W 117° 40.564'

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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.
HM NumberHMC4
Marker Number514
Year Placed1955
Placed ByCalifornia State Park Commission and The Historic Society of Pomona Valley
Marker ConditionNo reports yet
Date Added Saturday, September 27th, 2014 at 6:51am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)11S E 437721 N 3785896
Decimal Degrees34.21225000, -117.67606667
Degrees and Decimal MinutesN 34° 12.735', W 117° 40.564'
Degrees, Minutes and Seconds34° 12' 44.10" N, 117° 40' 33.84" W
Driving DirectionsGoogle Maps
Area Code(s)909
Closest Postal AddressAt or near 205 Mt Baldy Rd, Claremont CA 91711, US
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