Number Page 



14 Frequency of destruction by tropical storms, 1904-77 136 



15 Monthly mean discharge of the Alabama, Tombigbee, and Perdido 

 Rivers 146 



16 Location of municipal wastewater treatment plants 154 



17 Location of industrial discharge points in Mobile and Baldwin 

 Counties 155 



18 Flood-tide current patterns in Perdido Bay 175 



19 Ebb-tide current patterns in Perdido Bay 176 



20 Velocity directions for flood-tide flow predicted by a 

 hydrodynamic model, Mobile Bay 177 



21 Velocity directions for ebb-tide flow predicted by a 

 hydrodynamic model, Mobile Bay 178 



