EROSIONAL POTENTIAL OF STREAMS IN URBANIZING AREAS1
作者:
William Whipple,
James M. DiLouie,
Theodore Pytlar,
期刊:
JAWRA Journal of the American Water Resources Association
(WILEY Available online 1981)
卷期:
Volume 17,
issue 1
页码: 36-45
ISSN:1093-474X
年代: 1981
DOI:10.1111/j.1752-1688.1981.tb02586.x
出版商: Blackwell Publishing Ltd
关键词: erosion;bank erosion;channel erosion;degradation (stream;stream erosion;erosion control;geomorphology;stroms;bank protection;land management;stream stabilization;culverts;land use;land classification;urbanization
数据来源: WILEY
摘要:
ABSTRACT:In urbanizing areas, the usual increase in flood flows also increases erosional capability of streams. In order to evaluate such tendencies quantitatively, 25 stream reaches were studied, and were classified as to whether erosion of the channel and banks was light, medium, or heavy. Analysis of characteristics indicated that (1) densely developed areas are correlated with greater erosion, (2) wide stream buffers of natural vegetation are correlated with lesser erosion, and (3) there is no definite correlation of erosion to slope or characteristics of soil.Erosional stream instability can be avoided by retention of storm water runoff, creating additional channel roughness or reducing channel slope during floods by drop structures, such as culverts, which restrict flow. Channel straightening and general bank protection should be minimized in such streams. Design of culverts should take such effects into consideration.
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