Transporting the Water

Transporting the Water (HM1CZY)

Location: Castro Valley, CA 94546 Alameda County
Country: United States of America

N 37° 43.803', W 122° 7.231'

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Inscription
The Transporting the Water marker consists of an illustration and two photographs accompanied by captions. They captions are presented here, left to right. Click on the image to enlarge it.

Hydraulicing:
Hydraulics were used to widen and strengthen the dam. In this sketch drawn by John Muir in 1888, look for the metal-lined wooden flume into which workmen shoveled and sprayed earth from nearby hills that gravity would move to the dam. Notice the superintendent's cottage that used to sit on top of the hill.

Tunnel No. 2:
Underneath the mock neo-classical temple lies the inlet of Tunnel No. 2, which was completed in 1875. It connected reservoir waters to the main Oakland pipelines in 1876. The decorative temple, named "Diana's Temple," was built in 1917. Note for scale the man standing at the bottom-left of the inlet.

Tunnel No. 3:
This tunnel was built in 1889 as a secondary spillway to move excess water from the reservoir back to San Leandro Creek. Dug and dynamited 1,438 feet through rock, the exit is visible near the city of San Leandro's Chabot Park.
Details
HM NumberHM1CZY
Tags
Year Placed2012
Placed ByEast Bay Regional Park District
Marker ConditionNo reports yet
Date Added Friday, September 12th, 2014 at 8:54am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)10S E 577499 N 4176228
Decimal Degrees37.73005000, -122.12051667
Degrees and Decimal MinutesN 37° 43.803', W 122° 7.231'
Degrees, Minutes and Seconds37° 43' 48.18" N, 122° 7' 13.86" W
Driving DirectionsGoogle Maps
Area Code(s)510, 925
Closest Postal AddressAt or near 201-209 West Shore Trail, Castro Valley CA 94546, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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