Indian Valley Reservoir

Newport Beach, CA


Indian Valley Reservoir
Indian Valley Reservoir
Indian Valley Reservoir

The Indian Valley Reservoir provides long-term irrigation storage and flood control. A 2010 inspection report recommended seismic analyses of the floodgates and control structure to confirm the gates could be raised following a earthquake. SGH evaluated the seismic performance of the two structures.

Scope | Solutions

SGH assessed the expected performance of the structures in a maximum design earthquake when the reservoir water level is at its maximum level under normal operating conditions. Highlights of our work include the following:

  • Developed finite element models of the reinforced concrete control structure and steel radial arm tainter gates

  • Evaluated the control structure for uncracked and cracked conditions

  • Analyzed the gates for both downstream and cross-steam loading

  • Compared the anticipated demands to the structures’ capacities

  • Concluded a maximum design earthquake should not cause deformations or damage that would prevent the gates from opening

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