HydroPol2D

A distributed hydrologic-hydrodynamic modeling framework for coupled surface-subsurface processes

Documentation GitHub

Hydrologic Processes

Interception, evapotranspiration, snow dynamics, infiltration, vadose storage, recharge, and groundwater feedbacks.

Hydrodynamic Routing

Local inertial routing with multiple numerical schemes, optional cellular automata routing, and hydraulic controls.

Groundwater Model

Recharge coupling, 2D Boussinesq groundwater flow, exfiltration, and saturation-excess return flow.

Water Quality

Pollutant buildup, washoff, and distributed transport coupled to surface flow and outlet export.

Integrated process architecture

Model Workflow

HydroPol2D links atmospheric forcing, canopy interception, vadose-zone storage, groundwater response, dynamic surface routing, and pollutant transport through two-way coupling across the full hydrologic system.

Atmospheric Forcing

Climate inputs and cryosphere partitioning

Precipitation forcing

Snow partition

Snowmelt contribution

Canopy & Energy Balance

Vegetation controls on effective water input

Interception storage

Throughfall / effective rainfall

Canopy evaporation and ET losses

Coupled Core Solver

Exchanges water mass, storage states, and feedbacks across surface, vadose, groundwater, routing, and quality modules.

Surface-Flow Routing

2D surface storage, conveyance, and controls

Surface storage and routing

Local inertial / CA solver

Reservoirs, BCs, and outlet controls

Surface & Vadose Partitioning

Runoff generation and subsurface allocation

Infiltration capacity

Vadose storage dynamics

Recharge to groundwater

Infiltration excess to surface water depth

Groundwater System

Subsurface storage and return-flow interaction

2D Boussinesq groundwater flow

Exfiltration to the surface

Saturation-excess return flow

Feedback to ponded surface depth

Water-Quality Transport

Constituent generation and surface export

Pollutant buildup

Washoff initiation

Advection with surface routing

Transport and outlet export

Atmosphere

Land surface forcing

Partitioning across runoff, storage, and recharge

Subsurface feedback to surface hydraulics

Routing-driven constituent export

Why HydroPol2D?

A modular, high-performance framework for integrated flood, hydrology, groundwater, and water-quality simulation.

Integrated hydrology and hydraulics

Simulate rainfall-runoff generation, vadose storage, groundwater feedback, and dynamic surface routing in one framework.

Built for large domains

Designed for efficient high-resolution simulations with scalable workflows and advanced numerical options.

Geospatial workflows

Integrates terrain, soil, vegetation, climate, river, and hydraulic-control datasets into a distributed modeling environment.

Open-Source

Flexible for flood inundation, groundwater interaction, green infrastructure, and water-quality applications.