Topoflow is a powerful and spatially distributed hydrological model with a user-friendly click interface. Its main purpose is to simulate many different physical processes in a watershed, and its goal is to accurately predict how various hydrological variables will evolve in response to climate forces.

Ecohat system is based on the study of eco hydrological process mechanism, starting from the basic water cycle process, adding nutrient migration and transformation process in the water cycle process, comprehensively considering the interaction of vegetation / biological growth, water cycle elements and nutrients in land water ecosystem. The ecohat system model is built on the basis of integrating the advantages of eco hydrological process models with physical and chemical mechanisms at home and abroad. After model adjustment, the model adopts parameters suitable for China's natural conditions to establish a localized database. Ecohat system realizes pixel based model operation by inputting regional spatial grid parameters. Therefore, ecohat system is a completely distributed integrated simulation system of eco hydrological process. Ecohat system includes four parts: water cycle, nutrient cycle, plant growth and aquatic environment response. Water cycle is the core of the system and runs through the other three parts. The simulation of water cycle in ecohat system includes five processes: rainfall infiltration, surface runoff, evapotranspiration, root water absorption and soil moisture; nutrient cycle mainly includes the simulation of nitrification, denitrification and ammonia volatilization in soil, the simulation of base cation cycle in soil, and the quantitative simulation of adsorbed phosphorus produced by soil erosion process; plant growth It includes vegetation ecological water use simulation, vegetation NPP (net primary productivity) simulation, productivity distribution process simulation and vegetation nutrient element absorption simulation.

Pamolare II is a SDM model centered on phreatic lake, which is used for lake eutrophication management. It can adapt to wetland conditions. Pamolare II also considers species competition (hydrophytes and phytoplankton) and interactions between macrophytes and macrophytes.

HydroGeoSphere model is jointly developed by water loo University, Laval University and hydrogeologic company. It can simulate the flow and solute transport process of groundwater and surface water in three dimensions. The model has two coupling modes for groundwater and surface water: the common node mode assumes that the instantaneous consistency of water head is maintained between the surface and the groundwater body, and the water exchange between the surface and groundwater is not calculated in the coupling process of the model; the dual node mode does not assume the continuity of the water head between the two systems, but describes the surface and ground by Darcy flow relationship The flow exchange between the lower water bodies.

The n3dade model is used to evaluate solute transport in three-dimensional nonequilibrium porous media.