SEARCH

SEARCH BY CITATION

Keywords:

  • detention ponds;
  • hydrographs;
  • stormwater manage ment;
  • storm duration;
  • rational method;
  • storage volume

ABSTRACT: The Modified Rational formula hydrograph and the Yarnell generalized rainfall chart are generally accepted procedures for sizing storm water detention ponds for small drainage areas. A procedure has been developed to choose the rainfall duration which, for a chosen return period, will result in the largest required storage volume of a detention pond. A graphical solution has been provided and its use has been described by application to an example.