AN ANALYTICAL MODIFICATION OF THE RATIONAL METHOD FOR DETERMINATION OF THE PEAK DISCHARGE FROM SMALL URBAN DRAINAGE BASINS IN LOUISIANA

AN ANALYTICAL MODIFICATION OF THE RATIONAL METHOD IS PRESENTED TO DETERMINE VALUES FOR RAINFALL INTENSITY RUNOFF COEFFICIENT FOR DETERMINATION OF PEAK DISCHARGE FROM SMALL URBAN DRAINAGE BASINS IN LOUISIANA. THE STATE OF LOUISIANA WAS DIVIDED INTO CLIMATOLOGICALLY SIMILAR REGIONS AND RAINFALL FACTORS FOR EACH OF THE REGIONS WERE DETERMINED RELATIVE TO SHREVEPORT. THE WATER-BUDGET THEORY, USING SURFACE DETENTION AND INFILTRATION AS THE DIFFERENCE BETWEEN RAINFALL AND RUNOFF WAS USED AS THE BASIS FOR DETERMINATION OF THE RUNOFF COEFFICIENT. NOMOGRAPHS AND TABLES ARE PRESENTED TO DETERMINE SURFACE DETENTION AND INFILTRATION FOR USE IN THE WATER-BUDGET THEORY. NOMOGRAPHS ALSO WERE DEVELOPED TO DETERMINE THE RUNOFF COEFFICIENT AND PEAK TABLES ARE PRESENTED TO DETERMINE SURFACE COMPUTATION OF THE RUNOFF COEFFICIENT AND PEAK DISCHARGE IF THE NOMOGRAPHS ARE NOT USED. /AUTHOR/

• Supplemental Notes:
  • Hpr, Hpr-1/7/, 67-1H, 4663-052
• Corporate Authors:

  Louisiana Tech University, Ruston

  Ruston, LA  United States  71272

  Louisiana Department of Highways

  P.O. Box 44245, Capitol Station
  Baton Rouge, LA  United States  70804

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Price, B E
• Publication Date: 1969-6-25

Subject/Index Terms

• TRT Terms: Calculation; Coefficients; Computer programs; Drainage basins; Infiltration; Nomographs; Peak fares; Rainfall; Runoff; Urban areas
• Uncontrolled Terms: Computation; Rainfall intensity
• Old TRIS Terms: Discharge measurement; Discharge rate
• Subject Areas: Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00204004
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS, STATEDOT
• Created Date: Oct 27 1994 12:00AM