Cypress Creek near Downsville, La.

Computed roughness coefficient: Manning's n= 0.10 Date of flood: February 21, 1974 Date of photograph: February 13, 1979 Depth of flow on flood plain: 2.6 ft Description of flood plain: The vegetation of the flood plain is primarily trees, including oak, gum, and pine. The base is firm soil and has slight surface irregularities. Obstructions are negligible (a few downed trees and limbs). Ground cover and vines are negligible.