Pea Creek near Louisville, Ala.

Computed roughness coefficient: Manning's n= 0.14 Date of flood: December 21, 1972 Date of photograph: March 13, 1979 Depth of flow on flood plain: 2.9 ft Description of flood plain: The vegetation of the flood plain is a mixture of large and small trees, including oak, gum, and ironwood. The base is firm soil and has minor surface irregularities caused by rises and depressions. Obstructions are minor (downed trees and limbs and a buildup of debris). Ground cover is negligible, and the amount of undergrowth is made up of small trees and vines.