Thompson Creek near Clara, Miss.

Computed roughness coefficient: Manning's n= 0.20 Date of flood: March 3, 1971 Date of photograph: March 29, 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. Obstructions are minor. Ground cover is medium, and the large amount of undergrowth includes vines and palmettos.