THE EFFECT OF BASIN CHARACTERISTICS ON THE OUTLET HYDROGRAPH FROM A 9-ACRE IMPERVIOUS DRAINAGE BASIN

AN ANALYTICAL COMPUTER APPROACH TO THE SYNTHESIS OF RUNOFF HYDROGRAPHSIS USED TO INVESTIGATE THE EFFECTS ON THE HYDROGRAPHS OF THE VARIATION OF THE PHYSICAL CHARACTERISTICS OF A NINE-ACRE HYPOTHETICAL DRAINAGE BASIN. THE DRAINAGE DENSITY, DRAINAGE PATTERN, AND DRAINAGE AREA SHAPE ARE ALLOWED TO VARY, AND THESE VARIATIONS ARE RELATED TO THE CHANGE IN PEAK FLOW AND TIMEPEAK OF THE HYDROGRAPH. IT IS FOUND THAT ALTHOUGH EACH OF THE CHARACTERISTICS AFFECTS THE HYDROGRAPH, THE VARIATION OF THE DRAINAGE DENSITY CAUSES THE GREATEST CHANGE IN THE PEAK FLOW. THESE RESULTS ARE COMPARED TO THE PEAK FLOWS AND LAG TIMES THAT WOULD BE PREDICTED BY USING THE RATIONAL METHOD ON THE SAME DRAINAGE BASINS. THE RATIONAL METHOD IS SHOWN TO BE ALMOST TOTALLY INSENSITIVE TO CHANGES IN DRAINAGE DENSITY. THE OVERALL RESULTS INDICATE THAT THE AVERAGE LENGTH OF OVERLAND FLOW IN THE DRAINAGE BASIN CAN BE USED TO PREDICT THE PEAK FLOW UNDER CONDITIONS SPECIFIED IN THIS STUDY. /AUTHOR/

  • Supplemental Notes:
    • Adm, Cpr-11-5975 (100-35-31-13-3663-011)
  • Corporate Authors:

    Johns Hopkins University, Baltimore

    Baltimore, MD  USA  21218

    Maryland State Roads Commission

    ,    

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  USA  20590
  • Authors:
    • Horn, D R
  • Publication Date: 1967-11

Subject/Index Terms

  • TRT Terms: Hydrographs
  • Subject Areas: Highways; Hydraulics and Hydrology;

Filing Info

  • Accession Number: 00203998
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS
  • Created Date: May 5 1994 12:00AM