THE SANTA BARBARA URBAN HYDROGRAPH METHOD

The Santa Barbara Urban Hydrograph (SBUH) method is a simple means of developing runoff hydrographs from urban watersheds using local data. To use the method, the watershed is divided into pervious and hydraulically connected impervious portions. Rain falling on the impervious portion is considered to be 100% runoff. Rain falling on or flowing across pervious portions is subjected to infiltration losses, the magnitude of which depend on antecedent rainfall. The resulting rainfall excess for each time period is converted to a rate of flow. The instantaneous hydrograph thus obtained is routed through an imaginary linear reservoir with a routing constant equivalent to the watershed time of concentration to obtain the final hydrograph.

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 131-141

Subject/Index Terms

Filing Info

  • Accession Number: 00135893
  • Record Type: Publication
  • Report/Paper Numbers: UKY BU109
  • Files: TRIS
  • Created Date: Oct 26 1976 12:00AM