381 resultados para Inland waterways
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Mode of access: Internet.
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Mode of access: Internet.
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Title from caption.
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At head of title: Department of Commerce. Office of the Secretary.
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Mode of access: Internet.
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Includes index.
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Includes bibliographical references and index.
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Mode of access: Internet.
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Mode of access: Internet.
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Cover title: Electronic computer program for hydraulics of bridge waterways (BPR program HY-4)
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Long-term changes in the beach fauna at Duck, North Carolina, were investigated. Twenty-one stations located on three transects on the oceanside and twenty-four stations located on three transects on the sound side were sampled seasonally from November 1980 to July 1981. The data collected in this study were compared to a previous study conducted in 1976 (Matta, 1977) to investigate the potential effects of the construction of the CERC Field Research Facility pier on the adjacent beaches. No effects on the benthic fauna were found. Changes observed in the benthic macrofauna on the ocean beaches were well within the range attributable to the natural variation of an open coast system. The ocean beach macrofauna was observed to form a single community migrating on an off the beach with the seasons. On the sound beaches, changes were detected in the benthic macrofauna; however, these were attributed to a salinity increase during the 1981 sampling year. (Author).
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Mode of access: Internet.
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Mode of access: Internet.
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Final report; August 1977.
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Prepared by Soils and Pavements Laboratory, U.S. Army Engineer Waterways Experiment Station, Vicksburg, Miss., under contract no. PO 4-1-0195.