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Applying SHETRAN in a Tropical West African Catchment (Dano, Burkina Faso)—Calibration, Validation, Uncertainty Assessment

Department of Geography, University of Bonn, Meckenheimer Allee 166, 53115 Bonn, Germany
German Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany
Helmholtz Center for Environmental Research—UFZ, Brückstraße 3a, 39114 Magdeburg, Germany
Author to whom correspondence should be addressed.
Water 2017, 9(2), 101;
Received: 2 December 2016 / Accepted: 4 February 2017 / Published: 9 February 2017
(This article belongs to the Special Issue Soil Erosion by Water)
This study presents the calibration and validation of the physically based spatially distributed hydrological and soil erosion model SHETRAN for the Dano catchment, Burkina Faso. A sensitivity analysis of six model parameters was performed to assess the model response and to reduce the number of parameters for calibration. The hydrological component was calibrated and validated using observed discharge data of two years. Statistical quality measures (R2, NSE, KGE) ranged from 0.79 to 0.66 during calibration and validation. The calibrated hydrological component was used to feed the erosion modeling. The simulated suspended sediment load (SSL) was compared with turbidity‐based measurements of SSL of two years. Achieved quality measures are comparable to other SHETRAN studies. Uncertainties of measured discharge and suspended sediment concentration were determined to assess the propagated uncertainty of SSL. The comparison of measurement uncertainties of discharge and SSL with parameter uncertainty of the corresponding model output showed that simulated discharge and SSL were frequently outside the large measured uncertainty bands. A modified NSE was used to incorporate measurement and parameter uncertainty into the efficiency evaluation of the model. The analyses of simulated erosion sources and spatial patterns showed the importance of river erosion contributing more than 60% to the total simulated sediment loss. View Full-Text
Keywords: erosion modeling; parameter uncertainty; measurement uncertainty erosion modeling; parameter uncertainty; measurement uncertainty
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Op de Hipt, F.; Diekkrüger, B.; Steup, G.; Yira, Y.; Hoffmann, T.; Rode, M. Applying SHETRAN in a Tropical West African Catchment (Dano, Burkina Faso)—Calibration, Validation, Uncertainty Assessment. Water 2017, 9, 101.

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