The April 12-13, 1979, storm produced record flooding on the Black Warrior River at Tuscaloosa and Northport, Ala. The peak discharge exceeded the 100-year flood at the U.S. Geological Survey gaging station at Northport. Small streams in the urban areas had floods of approximately 10-year recurrence intervals. Rainfall of 9.0 inches for 24 hours ending 8:00 a.m. April 13 was equivalent to the 100-year rainfall-frequency intensity for Tuscaloosa. Flood peak elevations caused by the April 12-13, 1979, storm were determined from high water marks along streams in Tuscaloosa and Northport. These peaks are compared to historic peaks at gaging stations. The flood peak discharge on the Black Warrior River at Northport exceeded the maximum known flood of April 1900. However, the flood peak of the April 13, 1979, flow was of a lower elevation because of changes in the flood plain.
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USGS Numbered Series
Flood of April 12-13, 1979 in Tuscaloosa and Northport, Alabama