Integrated Surface and Subsurface Hydrological Modeling with Snowmelt and Pore Water Freeze–Thaw

O. S. Schilling, Young-jin Park, Rene Therrien, Ranjeet M. Nagare

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)


For the simulation of winter hydrological processes a gap in the availability of flow models existed: one either had the choice between (1) physically-based and fully-integrated, but computationally very intensive, or (2) simplified and compartamentalized, but computationally less expensive, simulators. To bridge this gap, we here present the integration of a computationally efficient representation of winter hydrological processes (snowfall, snow accumulation, snowmelt, pore water freeze–thaw) in a fully-integrated surface water-groundwater flow model. This allows the efficient simulation of catchment-scale hydrological processes in locations significantly influenced by winter processes. Snow accumulation and snowmelt are based on the degree-day method and pore water freeze–thaw is calculated with a vertical heat conduction approach. This representation of winter hydrological processes is integrated into the fully-coupled surface water-groundwater flow model HydroGeoSphere. A benchmark for pore water freeze–thaw as well as two illustrative examples are provided.

Original languageEnglish
Pages (from-to)63-74
Number of pages12
Issue number1
Early online date5 Nov 2018
Publication statusPublished - Jan 2019


  • Hydrological processes
  • Flow models
  • Simulation
  • Snowfall
  • Snowmelt
  • Pore water freeze-thaw


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