URBAN HYDROLOGIC STUDIES PHASE I AND II

AN ANALYTICAL MODIFICATION OF THE RATIONAL METHOD IS PRESENTED IN PHASE I TO DETERMINE VALUES FOR RAINFALL INTENSITY AND RUNOFF COEFFICIENT FOR DETERMINATION OF PEAK DISCHARGE FROM SMALL URBAN DRAINAGE BASINS. 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 DISCHARGE. A COMPUTER PROGRAM IS PRESENTED TO FACILITATE COMPUTATION OF THE RUNOFF COEFFICIENT AND PEAK DISCHARGE, IF THE MONOGRAPHS ARE NOT USED. THE AIMS ARE PRESENTED OF PHASE II, I.E., TO DEVELOP AND TEST INSTRUMENTS ENABLING EFFICIENT COMPUTERIZED RECALL OF RAINFALL AND RUNOFF DATA FOR SMALL, RELATIVELY FLAT, URBAN AREAS. INSTALLATION IS TO BE TESTED UNDER FIELD CONDITIONS. THE REPORT DETAILS THE DIFFICULTIES ENCOUNTERED WITH INSTALLATION, EQUIPMENT SELECTION, INSTALLATION AND OPERATIONS; SPECIFIC RECOMMENDATIONS ARE LISTED. /AUTHOR/

  • Corporate Authors:

    Louisiana State University and Agriculture & Mechanical College, Baton Rouge

    Baton Rouge, LA  USA  70803

    Louisiana Tech University, Ruston

    Ruston, LA  USA  71272

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590

    Louisiana Department of Highways

    P.O. Box 44245, Capitol Station
    Baton Rouge, LA  USA  70804
  • Authors:
    • Mcleane, R W
    • Price, B E
    • Middleton, G W
    • Allen, R M
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00204029
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Feb 15 1972 12:00AM