Lake Elsman
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Lake Elsman
Lake Elsman
Lake Austrian[1]
LocationSanta Clara County, California[2]
Coordinates37°7?48?N 121°55?51?W / 37.13000°N 121.93083°W / 37.13000; -121.93083Coordinates: 37°7?48?N 121°55?51?W / 37.13000°N 121.93083°W / 37.13000; -121.93083
TypeEarth[2]
Primary outflowsLos Gatos Creek[2]
Catchment area9.8 square miles (25 km2)[2]
Basin countriesUnited States
Managing agencySan Jose Water Agency[2]
Built1950 (1950)[2]
Surface area96 acres (39 ha)[2]
Surface elevation1,119 feet (341 m)[3][4]

Lake Elsman is a 6,200-acre-foot (7,600,000 m3)[2] reservoir, created by an earthen dam called Austrian Dam[5] on Los Gatos Creek in the Santa Cruz Mountains of California.[1] At several points it is over 140' deep[6] and its normal surface area is 96 acres.[1] It provides 12% of San Jose Water Works' total water capacity in some years.[6] The lake and dam is owned by the San Jose Water Company,[6]

In 1988 and 1989, two earthquakes at M=5.3 and 5.4 respectively occurred at Lake Elsman that transferred stress that led to the 1989 M=6.9 1989 Loma Prieta earthquake.[7]

Austrian Dam

Construction of the Austrian Dam was completed in 1950.[1] Beneath the reservoir are the remains of the settlements of Austrian Gulch and Germantown.[8] The dam is more than 900 feet (270 m) long and 180 feet (55 m) high.[6] The dam was damaged in the Loma Prieta quake.[9] The performance of Austrian Dam during that earthquake reinforces concerns about damage to the tops of earth dams by earthquakes.[9]

See also

References

  1. ^ a b c d "Lake Elsman". Find Lakes. Retrieved 2012.
  2. ^ a b c d e f g h "Dams Within the Jurisdiction of the State of California (A-G)" (PDF). California Department of Water Resources. Archived from the original (PDF) on March 9, 2012. Retrieved 2012.
  3. ^ "Lake Elsman". Geographic Names Information System. United States Geological Survey.
  4. ^ "Lake Elsman - Santa Clara County, CA". Trails.com. Retrieved .
  5. ^ "Austrian Dam". Geographic Names Information System. United States Geological Survey.
  6. ^ a b c d Wiley, Neil. "Lake Elsman". Mountain Network News. Mountain Network News. Retrieved 2012.
  7. ^ 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" (PDF). Journal of Geophysical Research. 104 (B9): 20, 169-20, 182. doi:10.1029/1999jb900092. Retrieved 2012.
  8. ^ John V. Young (2002). Ghost Towns of the Santa Cruz Mountains. Great West Books. ISBN 9780944220122. Retrieved .
  9. ^ a b Riverside County Integrated Project (PDF). Riverside County Integrated Project. 2000. pp. Appendix H, 3-41.



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