|Location||Santa Clara County, California|
|Primary outflows||Los Gatos Creek|
|Catchment area||9.8 square miles (25 km2)|
|Basin countries||United States|
|Managing agency||San Jose Water Agency|
|Surface area||96 acres (39 ha)|
|Surface elevation||1,119 feet (341 m)|
Lake Elsman is a 6,200-acre-foot (7,600,000 m3) reservoir, created by an earthen dam called Austrian Dam on Los Gatos Creek in the Santa Cruz Mountains of California. At several points it is over 140' deep and its normal surface area is 96 acres. It provides 12% of San Jose Water Works’ total water capacity in some years. The lake and dam is owned by the San Jose Water Company,
Construction of the Austrian Dam was completed in 1950. Beneath the reservoir are the remains of the settlements of Austrian Gulch and Germantown. The dam is more than 900 feet (270 m) long and 180 feet (55 m) high. The dam was damaged in the Loma Prieta quake. The performance of Austrian Dam during that earthquake reinforces concerns about damage to the tops of earth dams by earthquakes.
- "Dams Within the Jurisdiction of the State of California (A-G)". California Department of Water Resources. Retrieved September 28, 2012.
- "Lake Elsman". Geographic Names Information System, U.S. Geological Survey.
- "Lake Elsman - Santa Clara County, CA". Trails.com. Retrieved 2012-02-24.
- "Austrian Dam". Geographic Names Information System, U.S. Geological Survey.
- "Lake Elsman". Find Lakes. Retrieved 23 February 2012.
- Wiley, Neil. "Lake Elsman". Mountain Network News. Mountain Network News. Retrieved 23 February 2012.
- Perfettini, Hugo; Stein, Ross S.; Simpson, Robert; Cocco, Massimo (September 10, 1999). "Stress transfer by the 1988-1989 M=5.3 and 5.4 Lake Elsman foreshocks to the Loma Prieta fault' Unclamping at the site of peak mainshock slip". Journal of Geophysical Research 104 (B9): 20,169–20,182. Retrieved 23 February 2012.
- John V. Young (2002). Ghost Towns of the Santa Cruz Mountains. Great West Books. ISBN 9780944220122. Retrieved 2013-05-14.
- Riverside County Integrated Project. Riverside County Integrated Project. 2000. pp. Appendix H, 3–41.
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