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Progress in Physical Geography
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Understanding watershed suspended sediment transport

Peng Gao

Department of Geography, Syracuse University, Syracuse, NY 13244, USA, pegao{at}maxwell.syr.edu

Suspended sediment at the watershed scale has played a critical role in sediment pollution, water-quality degradation, and the impairment of riparian ecosystems, and thus has been widely studied in many disciplines. This paper synthesizes a variety of methods adopted in suspended sediment monitoring, estimation and modelling for understanding sediment transport processes and determining the suspended sediment load. Methods for sediment monitoring are described in terms of direct and indirect approaches. Estimation of suspended sediment load is commonly achieved by establishing a sediment rating curve. Different approaches toward the establishment of a sediment rating curve are examined thoroughly. Techniques of sediment modelling are summarized via depiction of various hydrological and sediment models at the watershed scale. The paper ends with the discussion of future developments in suspended sediment studies at the watershed scale.

Key Words: sediment monitoring • sediment rating curve • suspended sediment • watershed modelling.

Progress in Physical Geography, Vol. 32, No. 3, 243-263 (2008)
DOI: 10.1177/0309133308094849
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