IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2005  > Vol2 No.3
Assessment of seasonal sedimentation in rain-fed irrigation reservoirs by a hillslope erosion modeling a:roach
Weerakoon S. B.
Corresponding AuthorWeerakoon SB
2005-09
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume2Issue:3Pages:225–232
AbstractA distributed hillslope model is presented for the computation of seasonal sediment loads flowing into the rain-fed irrigation reservoirs (tanks) from the mountainous catchments in Sri Lanka. The model is based on the subdivision of the catchment into hillslopes and a:lication of a sediment transport capacity equation at hillslope scale and computation of sediment loads transported to the tanks. Coarse and fine sediment loads due to hourly excess rainfall during a season are separately estimated. The model depends on fewer parameters and can be easily calibrated for a tank. The model calibration only requires measurements of coarse and fine sediment loads transported into the tank due to several rainfalls of different intensities from a representative subcatchment of the tank. Coarse sediment loads are measured by using a sediment trap installed across an ephemeral stream draining the subcatchment. Fine sediment loads are obtained by measuring the discharge and accompanied sediment concentrations over the sediment trap. The model is calibrated, verified and a:lied for an irrigation tank in Sri Lanka to estimate the seasonal sedimentation loads.
KeywordCatchment Hillslope Irrigation Reservoir Sedimentation Soil Erosion Village Tank
Language英语
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6153
CollectionJournal of Mountain Science_Journal of Mountain Science-2005_Vol2 No.3
Recommended Citation
GB/T 7714
Weerakoon S. B.. Assessment of seasonal sedimentation in rain-fed irrigation reservoirs by a hillslope erosion modeling a:roach[J]. JOURNAL OF MOUNTAIN SCIENCE,2005,2(3):225–232.
APA Weerakoon S. B..(2005).Assessment of seasonal sedimentation in rain-fed irrigation reservoirs by a hillslope erosion modeling a:roach.JOURNAL OF MOUNTAIN SCIENCE,2(3),225–232.
MLA Weerakoon S. B.."Assessment of seasonal sedimentation in rain-fed irrigation reservoirs by a hillslope erosion modeling a:roach".JOURNAL OF MOUNTAIN SCIENCE 2.3(2005):225–232.
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