a. The change of tidal flows and water quality in the Anaheim Bay. 



b. The water surface elevations in Huntington Harbour that would 

 exist under either ocean entrance alternative. 



c. The effect of a navigable connector channel between Bolsa Chica 

 and Huntington Harbour in terms of water flow in Huntington 

 Harbour and Outer Bolsa Bay. 



d. The potential for scouring water flows in Outer Bolsa Bay due to 

 closure of the non-navigable entrance. 



e. The amount of storm water runoff that would enter the wetlands if 

 either alternative is constructed. 



f . The overall water residence time in the entire system when 

 compared to existing conditions. 



g. The tidal flushing of Huntington Harbour under the various 

 proposed alternatives . 



ENTRANCE CHANNEL PHYSICAL MODELING 



Purpose . The purpose of the physical modeling task was to examine wave 

 penetration into the marina basin and the resulting harbor oscillations, to 

 study qualitatively current circulation and sediment transport paths in the 

 vicinity of the structures, and to make preliminary assessment of the entrance 

 channel design configuration. In addition the physical model provided a tool 

 for examining modifications to the incident waves caused by the protective 

 structures so that surfing impacts could be assessed (see next section). 



Scope . The scope of work for this task involved the following efforts: 



a. Design and construction of the physical model. 



b. Installation and calibration of the wave generator and pumps. 



c. Testing of the navigable entrance with and without a navigable 

 connector to Huntington Harbor. 



d. Testing of the non-navigable entrance. 



e. Conducting sediment tracer tests and dye injection tests. 



f . Providing still and video footage of the physical model. 



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