首页|Assessment of Saturated Hydraulic Conductivity-Depth Relationships and Extended Soil Column Thickness in Catchment Hydrological Modelling

Assessment of Saturated Hydraulic Conductivity-Depth Relationships and Extended Soil Column Thickness in Catchment Hydrological Modelling

扫码查看
原文链接
  • NETL
  • NSTL
  • Wiley
An appropriate soil configuration is essential in hydrological models given the role of subsurface processes in the hydrological functioning of a catchment. Hydrological models are typically set up with shallow soil depths as restricted by measurements and soil datasets that are often unavailable in greater depths. While this may be sufficient for some catchments, in some areas the water table is located deeper and thus the shallow groundwater and its link with the rest of the hydrological processes may not be captured well by the model. An important soil parameter, that is known to vary with soil depth, is the saturated hydraulic conductivity (Ksat). In this study, we assessed different vertical profiles of Ksat which exceed the typical soil measurement depths. The Ksat profiles were implemented in wflow.jl for the distributed hydrological model wflow_sbm and tested for the Vecht catchment. Results demonstrated that increasing the soil thickness and implementing any of the Ksat profiles assessed improved the discharge and mean groundwater depth predictive capabilities, albeit altering the groundwater dynamics. A sensitivity analysis revealed the respective influence of four model parameters on the groundwater dynamics which can be used as basis to optimise the model performance further.

catchment hydrologyhydrological modelsaturated hydraulic conductivitysoil parameterssoil profilewater table dynamicswflow_sbm

Raul Mendoza、Willem van Verseveld、Chris Seijger、Albrecht Weerts

展开 >

Hydrology and Environmental Hydraulics Group, Wageningen University & Research, Wageningen, the Netherlands||Catchment and Urban Hydrology, Deltares, Delft, the Netherlands

Catchment and Urban Hydrology, Deltares, Delft, the Netherlands

Water Resources Management Group, Wageningen University & Research, Wageningen, the Netherlands

Hydrology and Environmental Hydraulics Group, Wageningen University & Research, Wageningen, the Netherlands||Operational Water Management, Deltares, Delft, the Netherlands

展开 >

2025

10.1002/hyp.70149

Hydrological processes

Hydrological processes

ISSN：1099-1085
年,卷(期)：2025.39(5)
  • 79