Influence of the sediment delivery ratio index on the analysis of silting and break risk in the Plasencia reservoir (Central System, Spain)

Y. Sánchez (), A. Martínez-Graña (), F. Santos-Francés () and M. Yenes ()
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Y. Sánchez: University of Salamanca
A. Martínez-Graña: University of Salamanca
F. Santos-Francés: University of Salamanca
M. Yenes: University of Salamanca

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2018, vol. 91, issue 3, No 29, 1407-1421

Abstract: Abstract Erosion and the production of sediments effect the siltation of reservoirs and create large environmental problems. This work calculates the volume of sediments caused by erosion in a hydrological basin using the Revised Universal Soil Loss Equation 2 (USLE–RUSLE2), applying, or not, the sediment delivery ratio, and is compared with the volume of sediments transported using the Lawrence method. The USLE–RUSLE2 method is validated in the study area, the Jerte Valley, using the geographic information systems. The result obtained showed an erosion of 7 Tm/ha year and low risk of siltation, which suggest that the Plasencia reservoir has a long life expectancy.

Keywords: Reservoir siltation; USLE–RUSLE2; Lawrence method; Sediment delivery ratio (SDR) (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1007/s11069-018-3182-6

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