 The industries located along the ship channel and the bay are a major cause of the pollution.Hurricanes are a substantial concern during the fall season.Though Galveston Island and the Bolivar Peninsula provide some shielding, Baytown still faces more danger than Houston and other inland communities, particularly because of storm surge, as well as severe land subsidence in some low-lying areas of town due to excess pumping of groundwater in the 1960s (see Brownwood subdivision) by area refineries and municipalities.