Accession Number : ADA119104

Title :   The Streambank Erosion Control Evaluation and Demonstration Act of 1974, Section 32, Public Law 93-251. Main Report.

Descriptive Note : Final rept.


PDF Url : ADA119104

Report Date : Dec 1981

Pagination or Media Count : 176

Abstract : Streambank erosion continues to be a serious problem along many of the Nation's streams and waterways, resulting in serious economic losses of private and public lands, bridges, etc. Approximately 142,000 bank-miles of our Nation's streams and waterways are in need of erosion protection. Treatment costs to arrest this erosion are estimated to be in excess of $1 billion annually. Costs of conventional bank protection methods currently available generally exceed the benefits derived by a large margin, thereby rendering the control of these areas uneconomical from a cost/benefit standpoint. As a result, most erosion losses are continuing uncontested, and attempts to halt the erosion are limited to piecemeal-type protection works at isolated locations. However, the widespread concern about streambank erosion is reflected in the extensive amount of published literature and numerous current investigations of specific streams and problems thoughout the Nation. The causes of streambank erosion are complex and varied. Involved are streamflow characteristics, streambank and streambed stability, and the effects of man's activities. Erosion causes on major rivers may bear little resemblance to those on small streams. Streambank erosion causes frequency differ for various locations along the same river. In most instances, erosion at a site is the result of several causes. Recognition that each cause may require a specific cure is an important element when considering potential erosion control solutions.

Descriptors :   *Banks(Waterways), *Soil erosion, Prevention, Streams, Protective coverings, Demonstrations, Federal law

Subject Categories : Hydrology, Limnology and Potamology
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE