STOCHASTIC MODEL OF RUNOFF-PRODUCING RAINFALL FOR SUMMER TYPE STORMS

MODIFICATION OF WATERSHEDS OCCURS EITHER THROUGH NATURAL PROCESSES, SUCH AS EROSION, OR HUMAN INFLUENCES, SUCH AS URBANIZATION. IN EITHER CASE THE RAINFALL INPUT MUST BE PROPERLY MODELED BEFORE THE RUNOFF OUTPUT CAN BE PREDICTED AS THE MODIFICATIONS TAKE PLACE. THE PAPER CONSIDERS RUNOFF-PRODUCING SUMMER PRECIPITATION OF SHORT DURATION AND HIGH SPATIAL VARIABILITY AS AN INTERMITTENT STOCHASTIC PHENOMENON. THE PROBABILITY DISTRIBUTION OF SEASONAL TOTAL POINT OR AREAL RAINFALL IS OBTAINED BY CONVOLUTING A POISSON NUMBER OF EVENTS WITH A GEOMETRIC OR NEGATIVE BINOMINAL PROBABILITY OF RAINFALL AMOUNT. CLOSE AGREEMENT WITH THE EXPERIMENTAL DATA IS FOUND. THE PROBABILITY OF VARIOUS COMBINATIONS OF RAINFALL AMOUNTS, GIVEN THE SEASONAL TOTAL AND THE NUNBER OF EVENTS, IS THEN COMPUTED. WITH THESE RESULTS, THE THEORETICAL SEASONAL WATER YIELD DISTRIBUTION CAN BE OBTAINED BY USING A SIMPLE RAINFALL RUNOFF RELATIONSHIP, SUCH AS THE SOIL CONSERVATION SERVICE FORMULA. THE POSSIBILITY OF USING REGIONAL INPUT PARAMETERS TO STUDY THE DISTRIBUTION OF THE OUTPUT OF POORLY GAGED SMALL WATERSHEDS IS DISCUSSED. /ATHOR/

  • Corporate Authors:

    Water Resources Research

    ,    
  • Authors:
    • Duckstein, L
    • Fogel, M M
    • Kisiel, C C
  • Publication Date: 1972-4

Media Info

  • Pagination: p. 410-21
  • Serial:
    • Volume: 8
    • Issue Number: 2

Subject/Index Terms

Filing Info

  • Accession Number: 00204445
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 5 1972 12:00AM