The Lower Black Warrior Watershed, located in Alabama, covers an area of approximately 4,986 square miles. The watershed is characterized by a humid, subtropical climate with hot summers and mild winters. The hydrology of the watershed is mainly composed of the Black Warrior River and its tributaries. The Black Warrior River is the primary source of surface water in the area, while the Cahaba River is also prominent. The watershed receives an average of 55 inches of precipitation annually. The region is also known for its unique geology, with numerous coal seams and shale formations. The reservoirs within the watershed, including Lake Tuscaloosa and Lake Oliver, are primarily used for hydroelectric power generation and recreation. In recent years, the watershed has experienced drought conditions and declining water quality due to increased agricultural and urban development.