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A method for adjusting values of Manning's roughness coefficient for flooded urban areas

January 1, 1977

A method is presented for adjusting values of Manning's roughness coefficient for flooded urban areas on the basis of the density of buildings on a flood plain and verified roughness coefficients for natural conditions. An urban roughness coefficient can be calculated to emulate the water-surface profiles to within 0.06 meter for depths of flow less than 0.6 meter and plus or minus 10 percent for depths between 0.6 and 2 meters.

Publication Year 1977
Title A method for adjusting values of Manning's roughness coefficient for flooded urban areas
Authors H. R. Hejl
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Research of the U.S. Geological Survey
Index ID 70162873
Record Source USGS Publications Warehouse