PROCEDURES FOR ESTIMATING FLOOD FLOWS FROM SMALL RURAL WATERSHEDS

FLOOD FREQUENCY CURVES WERE COMPUTED AND COMPARED FOR ELEVEN SELECTED SMALL RURAL WATERSHEDS REPRESENTING A WIDE RANGE OF CLIMATIC AND GEOGRAPHICAL CONDITIONS IN THE UNITED STATES. FROM SCREENING THE LITERATURE, FOUR METHODS WERE SELECTED FOR COMPUTING THE FLOODS: HSP, REGIONAL, POTTER'S AND RATIONAL. GUMBEL'S EXTREME VALUE STRAIGHT LINE FITTING WAS EMPLOYED TO DERIVE THE FREQUENCY CURVES. DIGITAL COMPUTER SIMULATION BY HSP METHOD APPEARS TO BE MOST EFFECTIVE IN REPRODUCING THE FLOOD FREQUENCY CURVE AS INDICATED BY THE OBSERVED DATA ON THE TEST WATERSHEDS. FURTHER RESEARCHES TO STUDY THE STORM CHARACTERISTICS AND TO INTENSIVELY SIMULATE FLOODS IN MODERATE LARGE AREAS ARE SUGGESTED FOR THE DEVELOPMENT OF DESIGN PROCEDURES. /FHWA/

  • Corporate Authors:

    Hydrocomp International

    ,    

    California Division of Highways

    Bridge Department
    Sacramento, CA  United States  05914

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Linsley, R K
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00204019
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Files: TRIS, USDOT
  • Created Date: Mar 7 1971 12:00AM