Dog River and its tributaries drain most of Mobile, Alabama. Those tributaries range from relatively pristine streams to concrete lined drainage ditches to sluggish, sediment choked, tidal channels . As the city itself spreads out into the upper reaches of the watershed, poorly managed construction and the replacement of natural vegetation with impermeable surfaces contribute to the deterioration of water quality in Dog River.
The Dog River is a river in Mobile County, Alabama. The Dog River watershed drains more than 90 square miles (230 km2). The river is about 8 miles (13 km) long and is influenced by tides. It originates at 30°38?30?N 88°05?48?W? / ?30.64158°N 88.09666°W? / 30.64158; -88.09666 within the city of Mobile. It discharges into Mobile Bay, a tidal estuary on the northern Gulf of Mexico, at 30°33?54?N 88°05?18?W? / ?30.56491°N 88.08833°W? / 30.56491; -88.08833 near Hollinger's Island.[1] It was named by the original French colonists as the Riviere Au Chien[1], which can be translated into English as Dog River.