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Runoff simulation with eight different flow accumulation algorithms: Recommendations using a spatially distributed and open-source model

Autor López-Vicente, Manuel ; Pérez-Bielsa, Cristina; López-Montero, Teresa ; Lambán Jiménez, Luis Javier; Navas Izquierdo, Ana
Palabras clave DR2 model
Flow accumulation algorithm
Lake water level monitoring
Estaña Lakes
Fecha de publicación dic-2014
Citación López-Vicente M, Pérez-Bielsa C, López-Montero T, Lambán LJ, Navas A. Runoff simulation with eight different flow accumulation algorithms: Recommendations using a spatially distributed and open-source model. Environmental Modelling & Software 62: 11–21 (2014)
ResumenFlow accumulation algorithms (FAAs) predict the cumulative upstream drainage but each FAA generates a different map and this uncertainty still remains unsolved. This study makes advances in flow path research by testing 8 FAAs and analyzing the uncertainties of 15 simulations. The DR2-2013© SAGAv1.0 hydrological software is presented in a study carried out for two catchment lakes (NE Spain) over a 69-month test period. The best simulations were obtained with two single flow (Rho8 and Deterministic Infinity) and two multiple flow (Multiple Flow with threshold value and Triangular Multiple Flow) algorithms. Correlations between runoff depths and lake levels improved when the test period was split into wet and dry seasons. Correlations also improved with a one-month delay in response time and no delay in the large and small lakes. The DR2-2013© tool helped predict changes in lake volume and the highest model efficiencies were obtained with the multiple flow algorithms.
Descripción 29 Pags.- 5 Figs.- 3 Tabls. Available online 7 September 2014. The definitive version is available at: http://www.sciencedirect.com/science/journal/13648152
Versión del editorhttp://dx.doi.org/10.1016/j.envsoft.2014.08.025
URI http://hdl.handle.net/10261/101825
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