"Evaluation of Selected Methods for Determining Streamflow During Periods of Ice Effect"



In Reply Refer To:                               April 2, 1991 
Mail Stop 415



OFFICE OF SURFACE WATER TECHNICAL MEMORANDUM NO. 91.06

Subject:  PUBLICATIONS--"Evaluation of Selected Methods for
                         Determining Streamflow During Periods of 
                         Ice Effect" by N. B. Melcher and 
                         J. F. Walker

The purpose of this memorandum is to announce the availability of 
the subject Open-File Report 90-554, which will subsequently be 
published as a Water-Supply Paper.

This publication describes the results of an evaluation of 
seventeen methods for estimating ice-affected streamflow.  The 
methods were evaluated for potential use in computing streamflow 
records.  The methods evaluated were selected by polling field 
offices and from a comprehensive litera-ture search.  These methods 
and the techniques for applying them are described in the report.

The methods are evaluated by comparing estimated results to data 
collected at three streamflow-gaging stations in Iowa during the 
winter of 1987-88.  Discharge measurements were obtained at 1- to 
5-day intervals during the ice-affected periods at the three 
stations to define an accurate baseline record.  Discharge records 
were compiled for each method based on data available assuming a 
6-week field schedule.

A limited number of these reports are available for distribution 
from the Office of Surface Water (OSW).  To receive copies, please 
contact C. R. Wagner (CRWAGNER) in the OSW by electronic mail 
(please furnish a full address).




                                Charles W. Boning
                                Chief, Office of Surface Water

WRD DISTRIBUTION:  A, B, S, FO, PO