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Elsinore Trough

The Elsinore Trough is a graben rift valley in Riverside County, southern California. It is created by the Elsinore Fault Zone.

It is located between the Santa Ana Mountains to the west, and the Temescal Mountains of the Perris Block and the Temecula Basin to the east.

This graben valley is broken into a series of sections by transverse faults. These smaller graben valleys are the Temescal Valley, Elsinore Valley, Temecula Valley and Wolf Valley.[1][2]

The cities of Corona, Lake Elsinore, Murrieta, Temecula, and Wildomar; and the census-designated place of Temescal Valley; are located in the Elsinore Trough.


  1. Rene Engel, Geology and Mineral Deposits of the Lake Elsinore Quadrangle California, California Department of Natural Resources, Bulletin 146, Division of Mines, San Francisco, 1959, pp. 14, 55-51.
  2. Robert A. Larson, James E. Slosson editors, Storm-Induced Geologic Hazards: Case Histories from the 1992-1993 Winter in Southern California and Arizona, Volume 11, Geological Society of America, January 1, 1997, p.50, Fig. 1

Coordinates: 33°41′N 117°22′W / 33.683°N 117.367°W / 33.683; -117.367{{#coordinates:33|41|N|117|22|W|region:US-CA_type:landmark_dim:50000|| |primary |name= }}

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