DETERMINATION OF AN OPTIMAL IUH FOR LINEAR, TIME INVARIANT SYSTEMS FROM MULTI-STORM RECORDS

Rainfall excess and direct surface runoff records from a number of independent storms in a given watershed are used to derive an optimal Instantaneous Unit Hydrograph (IUH) for that watershed. The watershed is represented by a linear, time invariant, lumped, initially relaxed and non-anticipating system. The IUH is the kernel function of the surface runoff system thus defined. Discrete representation of the input and output functions as well as the kernel function leads to a set of linear equations in which the ordinates of the IUH are the unknowns. The method of solution adopted is by an optimization procedure that seeks the minimum value of a multi-variable function. The objective function in this case is the sum of squared deviations between observed values of the output function and those predicted with the use of the IUH ordinates. The sum is taken over all storms for which records are available, thus eliminating the need for averaging individual IUH's. A numerical example based on field data is included. /Author/

  • Corporate Authors:

    North-Holland Publishing Company

    P.O. Box 211
    1000 AE Amsterdam,   Netherlands 
  • Authors:
    • Diskin, M H
    • Boneh, A
  • Publication Date: 1975-1

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 57-76
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00082872
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 26 1975 12:00AM