Accession Number : ADA317645

Title :   Bed Erodibility at Indian River Inlet.

Descriptive Note : Final rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS HYDRAULICS LAB

Personal Author(s) : Parchure, Trimbak M.

PDF Url : ADA317645

Report Date : NOV 1996

Pagination or Media Count : 39

Abstract : Severe local erosion reaching depths up to 33.5 m (110 ft) has occurred during the past few years near the mouth of Indian River Inlet in the State of Delaware. It is feared that the erosion may extend and endanger the bank riprap stability. The problem was investigated by the U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS, at the request of the U.S. Army Engineer District, Philadelphia. Field data collected at the site in June 1994 included specimen samples and current measurements using ADCP. Laboratory tests were conducted on the sediment samples obtained from the site in order to determine the sediment characterization, critical shear stress for erosion, and the rate of erosion under different bed shear stresses. Analysis of current data combined with the results of sediment experiments did not provide conclusive reasons for the severe erosion experienced at the site; however, the data will be useful for future investigations including modeling.

Descriptors :   *SEDIMENT TRANSPORT, *BANKS(WATERWAYS), *SOIL EROSION, *INLETS(WATERWAYS), MEASUREMENT, LABORATORY TESTS, RATES, SHEAR STRESSES, SAMPLING, ARMY CORPS OF ENGINEERS, SEDIMENTS, MOUTH, DELAWARE, RIPRAP.

Subject Categories : Hydrology, Limnology and Potamology
      Soil Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE