Description:
<jats:p>Analyses of hydrologic data from high‐intensity short‐duration storms on very small drainage areas having varying physical characteristics indicated that a 1‐minute unit hydrograph could be used as the basis for generting runoff from an effective rainstorm input. The single parameter of the unit hydrograph (time constant <jats:italic>K</jats:italic>) was shown to be related to the physical characteristics of the drainage area. No evidence of the correlation between <jats:italic>K</jats:italic> and the storm pattern was discovered. Procedures are given for estimating net storm inputs.</jats:p>