CONTENTS 



FIGURES— Continued 



Page 



3-54 Crosscurrents in Umpqua River entrance 139 



3-55 Locations of Delaware River dikes 141 



3-56 Delaware River model 142 



3-57 Matagorda Bay model 144 



3-58 Elements of improvement plan, Matagorda Bay 145 



3-59 Surface current patterns around disposal islands, Matagorda Bay 147 



3-60 Shoaling test results. Upper Goose Hill shoal, James River 149 



3-61 Shoaling test results. Lower Goose Hill shoal, James River 150 



3-62 San Diego Bay model 151 



3-63 Effects of second entrance on dye concentration profiles, San Diego Bay. . . 153 



3-64 Location of proposed Shrewsbury Inlet 155 



3-65 Undistorted-scale model of Shrewsbury Inlet 156 



3-66 Distorted-scale model of Shrewsbury Inlet 157 



3-67 Effects of Shrewsbury Inlet on tides 159 



3-68 Effects of Shrewsbury Inlet on surges 159 



3-69 Effects of Shrewsbury Inlet on velocities 160 



3-70 Effects of Shrewsbury Inlet on temperatures 161 



3-71 Houston Ship Channel model 165 



3-72 Galveston Bay surge model, 166 



3-73 Galveston Bay surge study section models 167 



3-74 Alpha plan navigation structures, Galveston Bay 169 



3-75 Proposed hurricane surge protection barriers, Galveston Bay 170 



3-76 Hurricane surge histories, Galveston Bay entrance 171 



3-77 Effects of Gamma plan on LRST surge, Galveston Bay 172 



3-78 Effects of Alpha plan on LRST surge, Galveston Bay 172 



3-79 Proposed Alpha plan structure, Galveston Bay 173 



3-80 Proposed Gamma plan structure, Galveston Bay 174 



3-81 Effects of Tocks Island Dam on location of 250 isochlor, Delaware River. . . 176 



10 



