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Title: San Diego Bay model study : hydraulic model investigation
Authors: United States. Army. Corps of Engineers. Los Angeles District
Fisackerly, George M.
Keywords: Hydraulic models
San Diego Bay
Publisher: Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station) ; H-74-12.
Description: Technical Report
Abstract: The San Diego Bay model was a fixed-bed model constructed of concrete to scales of 1:500 horizontally and 1:100 vertically. Approximately 108 square miles of prototype area were reproduced. This area extended from just northeast of Point Lorna southward along the coast, including the bay, to just southeast of the southern extremity of South Bay. It extended oceanward to just beyond the -100-ft contour, about 5 miles from Silver Strand, and landward to approximately 1 mile from the bay. The model was equipped with the necessary appurtenances for the accurate reproduction of tides, tidal currents, and other significant prototype phenomena. The purpose of the study was to determine the effects of a second entrance into the bay on the hydraulic and flushing characteristics of the bay. Model verification tests indicated that the hydraulic phenomena reproduced in the model were in satisfactory agreement with those of the prototype for comparable conditions. It can be assumed, therefore, that the model provided quantitative answers concerning the effects of the proposed second entrance on the hydraulic regime of the prototype area reproduced in the model. Tests were conducted with plans for two different second entrance locations near the south end of the bay installed in the model. Maximum current velocities throughout the northern half of the bay were generally reduced by about 70 percent by both plans. The results of dye tracer tests showed that both plans would appreciably improve the overall flushing characteristics of the bay, with the northernmost second entrance producing the most improvement in flushing. With either second entrance in the model, the nodal point of the incoming tide was somewhat to the south of the nodal point of the outgoing tide, thus creating a circulation pattern with a net flow into the bay through the existing entrance and a net outflow through the proposed second entrance.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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