There are many models for estimating sediment delivery ratio, often for large watersheds have been developed but few models have been introduced for small watersheds.
U.S. Geological Survey is beginning to do develop models and undertake groundtruthing on this in watersheds with reaches of comparable geologies. Look for their publications based in Oregon and Washington.
Thank you so much Basma, can you send me any suitable link .
Washington: http://www.sciencedirect.com/science/article/pii/S0022169402000598
Chesapeake Bay: http://chesapeake.usgs.gov/sciencesummary-sedimentsourcesandtransport.html
Michigan example: http://www.iwr.msu.edu/rusle/sdr/sag-sdr.htm
Indiana: http://pubs.er.usgs.gov/publication/wri884222
North Carolina small coastal watersheds:
Scott A. Lecce, Patrick P. Pease, Paul A. Gares, Jingyu Wang. 2006.
Seasonal controls on sediment delivery in a small coastal plain watershed, North Carolina, USA. Geomorphology 73:246-260. DOI:10.1016/j.geomorph.2005.05.017
San Francisco Bay: http://www.waterboards.ca.gov/sanfranciscobay/water_issues/programs/TMDLs/lagunitascrksediment/Lagunitas%20Sediment%20Linkages%2019June2012.pdf
Walling (1983) suggested that sediment delivery ratio may be calculated from the proportions of clay in the sediment and in the soil.
SDR (%) = C soil (%) / C sed (%)
where C soil (%) = the content of clay in the soil (%).
C sed (%) = the content of clay in sediment (%).
Dear Seyed Ali Asghar
Please find the attached files including some papers about your interested topic.
Regards
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