(g) For pollution sources in Shrewsbury and Navesink Rivers, 

 the flushing rate would be improved by construction o£ the inlet. 



(h) Plan 3 would be less expensive to maintain than the 

 other plans tested. 



(i) Wave energy originating in the ocean and passing through 

 the new inlet would have insignificant effects on wave heights 

 along the Highlands Marina shoreline. 



(j ) The wave climate between the jetties should not be dif- 

 icult to navigate except possibly under certain combinations of 

 ocean wave conditions and critical ebb discharges in the inlet. 



b. Hydraulic Characteristics of Inlet and Hurricane Surge Study-- 

 Galveston Bay Entrance Channel, Texas . 



(1) Project . Design of barriers for protection of all or parts 

 of Galveston Bay against inundation by hurricane surge. 



(2) References . Brogdon (1969); Bobb and Boland (1970a, 1970b); 

 Sager and McNair (1973a, 1973b); Section III,6,i of this report. 



(3) Laboratory . WES. 



(4) Test Period . Effects of barriers on hurricane surge heights, 

 January 1965 to December 1967; effects of barriers on tides, currents, 

 salinities, and dye dispersion for normal tide conditions, August 1967 



to April 1970. 



(5) Problems . The tremendous growth and development of the 

 Texas coast have required an investigation for protection of this area 

 from inundation resulting from storm surges. The design of barriers for 

 protection of all or parts of the Galveston Bay region against flooding 

 by hurricane storm surges required hydraulic model studies of the bay 

 complex to verify the results of surge routings by analytical methods, 

 and to determine the effects of all proposed structures on normal tides 

 and hurricane surge heights upstream and downstream from barrier sites. 

 Current velocities throughout the bay system, the salinity regime of the 

 bay, and the rates of diffusion and flushing of pollutants discharging 

 into the bay also required investigation. 



(6) Purpose of Model Study . As part of the investigation for 

 hurricane protection plans in the Galveston Bay area, a mathematical 

 model was used to evaluate the effectiveness of the protection plans. 

 Discharge coefficients were assigned to the Galveston Harbor Entrance 

 to verify the mathematical model. These characteristics were obtained 



by subjecting a physical model of the entrance to a series of steady-state 

 flows for several constant elevations of the water surface in the Gulf of 

 Mexico. In this manner, the discharges moving through the entrance for 

 the anticipated fluctuations of the levels of the gulf and the projected 



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