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A Field Guide to the Identification of the Ordinary High Water Mark (OHWM) in the Arid West Region of the Western United States

其他書名	A Delineation Manual
出版	US Army Corps of Engineers, Engineer Research and Development Center, Cold Regions Research and Engineering Laboratory, 2008
URL	http://books.google.com.hk/books?id=FiclPwAACAAJ&hl=&source=gbs_api

註釋The ordinary high water mark (OHWM) is an approach for identifying the lateral limits of non-wetland waters. However, determining whether any non-wetland water is a jurisdictional "Water of the United States" involves further assessment in accordance with the regulations, ease law, and clarifying guidance. In the Arid West region of the U.S., the most problematic ordinary high water delineations are associated with the ephemeral/intermittent channel forms that dominate the Arid West landscape. This report presents a method for delineating the lateral extent of the non-wetland waters in the Arid West using stream geomorphology and vegetation response to the dominant stream discharge