Potential Effects of New Entrance Channel to Bolsa Chica Bay, California, on Unstabilized Adjacent Shorelines.
Abstract
Access to the open ocean from Huntington, CA is obtained by passage through Anaheim Bay which is heavily used by US Naval Weapons Station, Seal Beach. Concern has existed for many years about the possibility of accidental encounters between civilian and military craft in this area where ammunition off-loading and storage are routine practices. Local interests have requested US Army Engineer District, Los Angeles, to investigate the practicality of the construction of a new navigation entrance channel connecting Bolsa Chica Bay with the Pacific Ocean. Functional requirements of such a new entrance channel will necessitate stabilization by the use of a parallel or arrowhead jetty system, otherwise, the large net downcoast drift of littoral material will rapidly close the entrance channel and preclude navigation. At the same time, any jetty system will interrupt the transport of littoral material in the surf zone and the downcoast (in terms of net transport) beaches of their nourishment from upcoast sources. Consequently, a sand bypassing concept must be developed to operate in concert with a weir jetty system. The jetty system is necessary for navigational channel stabilization and a sand bypassing system is required to mitigate effects of the jetties on the recreational beaches of Bolsa Chica Beach State Park.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1984
- Accession Number
- ADA147549
Entities
People
- L. Z. Hales
Organizations
- Coastal Engineering Research Center