RESPONSE OF ROAD-STREAM CROSSINGS TO LARGE FLOOD EVENTS IN WASHINGTON, OREGON, AND NORTHERN CALIFORNIA
作者： T S Ledwith , M A Love , B C McFadin , S A Flanagan , M J Furniss
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摘要: The relative importance of water, wood, and sediment in triggering road-stream crossing failures has not been adequately studied. Effects on downstream aquatic riparian resources from would be reduced if appropriate designs were incorporated into existing culvert-sizing techniques to facilitate the passage organic debris sediment. As part a flood impact assessment project, US Department Agriculture Forest Service Interior Bureau Land Management initiated survey failed crossings public lands areas Coastal, Klamath, Blue Mountain Provinces Pacific Northwest. objectives identify mechanisms on-site consequences failure determine degree which specific could have predicted by using watershed-scale screening methods currently under development. This report discusses results survey.
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