PUBLICATIONS--Report "Techniques for Estimating Flood Hydrographs for Ungaged Urban Watersheds" by Virginia Stricker and Vernon Sauer 




June 14, 1982



SURFACE WATER BRANCH TECHNICAL MEMORANDUM NO. 82.10 

Subject:  PUBLICATIONS--Report "Techniques for Estimating Flood
          Hydrographs for Ungaged Urban Watersheds" by Virginia
          Stricker and Vernon Sauer 

The attached report describes a technique for estimating flood 
hydrographs for ungaged urban watersheds.  The technique utilizes 
a dimensionless hydrograph and an estimate of the watershed 
lagtime and peak discharge.  Regression equations for estimating 
watershed lagtime and peak discharge for ungaged urban watersheds 
were developed in a nationwide study of urban flood frequency in 
cooperation with the Federal Highway Administration.  The results 
of this nationwide study will be published as U.S. Geological 
Survey Water-Supply Paper 2207 next fall.  The attached report was 
also completed as part of this nationwide study. 

All WRD employees engaged in flood-frequency projects should be 
familiar with the attached report.  The State Highway Departments 
may be interested in projects oriented toward estimating flood 
hydrographs for rural or urban watersheds.  Techniques described 
in the attached report are applicable to rural watersheds if the 
regression equations for estimating watershed lagtime and peak 
discharge are based on rural watershed data. 

A few additional copies of the report may be obtained from the 
Surface Water Branch or the Regional Office in Atlanta, Georgia. 




Stanley P. Sauer 
Acting Chief, Surface Water Branch 

Attachment 

Distribution:  A, FOLS, PO 

"This memorandum does not supersede any previous SWB Memorandum."