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  USA  71272

    Louisiana Department of Highways

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

    Bureau of Public Roads /US

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

Subject/Index Terms

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