Modelling sediment fluxes in the Danube River Basin with SWAT

The Science of the Total Environment
O VigiakSamo Grošelj

Abstract

Sediment management is of prior concern in the Danube Basin for provision of economic and environmental services. This study aimed at assessing current (1995-2009) sediment fluxes of the Danube Basin with SWAT model and identifying sediment budget knowledge gaps. After hydrologic calibration, hillslope gross erosion and sediment yields were broadly calibrated using ancillary data (measurements in plots and small catchments, and national and European erosion maps). Mean annual sediment concentrations (SSC) from 269 gauging stations (2968 station-year entries; median 19mg/L, interquartile range IQR 10-36mg/L) were used for calibrating in-stream sediments. SSC residuals (simulations-observations) median was 2mg/L (IQR -14; +22mg/L). In the validation dataset (172 gauging stations; 1457 data-entries, median 17mg/L, IQR 10-28), median residual was 9mg/L (IQR -9; +39mg/L). Percent bias in an independent dataset of annual sediment yields (SSY; 689 data-entries in 95 stations; median 52t/km2/y, IQR 20-151t/km2/y) was -21.5%. Overall, basin-wide model performance was considered satisfactory. Sediment fluxes appeared overestimated in some regions (Sava and Velika Morava), and underestimated in others (Siret-Prut and Romanian Danube), but...Continue Reading

References

Jun 20, 2017·The Science of the Total Environment·Anna MalagóMarco Pastori

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Citations

Jun 20, 2017·The Science of the Total Environment·Anna MalagóMarco Pastori
Mar 9, 2018·Environmental Science and Pollution Research International·Lei WuXiaoyi Ma
Nov 3, 2020·Journal of Environmental Management·Junrui ChengKan Wang
Jan 8, 2021·Environmental Monitoring and Assessment·Cássia Monteiro da Silva Burigato CostaIsabel Kaufmann de Almeida
Jan 1, 2021·Journal of Advances in Modeling Earth Systems·Haicheng ZhangMarta Camino-Serrano
Mar 31, 2021·Environmental Science and Pollution Research International·Tiantian YangXiaofeng Zhang

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