HYDRO_AS-2D | Description


HYDRO_AS-2D is a versatile and reliable software for the 2D simulation of watercourses and the surface runoff of precipitation. It is based on the numerical solution of the shallow water equations using the Finite-Volume-Method.

HYDRO_AS-2D provides script-driven simulations: Thus, model data can be changed, queried, output or read in during the simulation. Therefore, very complex control processes can be modeled in water management systems.

HYDRO_AS-2D has a wide range of applications including:

  • River flooding analysis
  • Heavy rainfall analysis/ urban flash flood modeling
  • Sediment erosion/depositions studies in river channels and floodplains
  • Tidal wave propagation
  • Pollutant dispersion in a waterway

HYDRO_AS-2D | Features

  • Short calculating time for millions of elements

  • Calculation accuracy guaranteed by extensive lab tests and real-world applications

  • High stability, robustness and accuracy for a wide spectrum of hydrodynamic conditions

  • Volumetric accuracy of the tidal wave propagation over complicated topography

  • Results showing flow speed, direction, and flood depth

  • Current changes caused by sediment aggradation/erosion are accurately simulated due to fully coupled transport (solid matter/pollutant/heat) and hydrodynamic solver

  • Transport simulation transport of up to twelve grain dimensions at the same time

  • Easy data input and operation through coupling with Aquaveo software SMS

  • 64-Bit Windows-Version and Linux Version available

  • Optional performance boost through the use of graphics cards (GPU) or multiprocessing

  • A graphical user interface allows you to conveniently run calculations, test procedures and export data.

  • Script-driven simulations

  • Available in English and German for Windows and Linux

  • MapView for HYDRO_AS-2D enables the visualization of results in interactive animations.

HYDRO_AS-2D | MapView

Kartenanimation mit MapView

The MapView add-ons enable the creation of impressive map animations from HYDRO_AS-2D results, to illustrate the progression of a flood caused by heavy rain or a flood event.

MapView Converter conveniently creates the required data set for the animation from the result files. Numerous display and control functions can be defined.

The MapView Converter requires a separate license and only supports HYDRO_AS-2D version 5.2 or higher.

MapView Desktop is used for the presentation of calculation results. It visualizes the results interactively, offering many display and control functions.The map animation can be exported to and played from a memory stick.

MapView for HYDRO_AS-2D Desktop is available free of charge.

HYDRO_AS-2D | Scripting

With HYDRO_AS-2D you can replicate very complex control systems for water management by script-controlled simulations. Model data can be changed, queried, exported or imported during the calculation. The technical base is the widely used scripting language Lua.

HYDRO_AS-2D thus provides a foundation on which users can creatively develop their own applications.

For example:

  • Control systems for weirs, sulices, etc.
  • Automatic reading of inflow time series
  • Bidirectional interaction with other models (groundwater, sewer network models)
  • Simulation of dike or dam breaches

HYDRO_AS-2D | Extensions

You can use the following extensions to model additional processes or edit your modeling data efficiently.


The solid matter transport simulation model HYDRO_FT-2D extends HYDRO_AS-2D to include transport processes (suspended matter and bedload).


HYDRO_WT-2D simulates the heat transport in flowing waters analogous to the transport of pollutants.


Mesh-generator based on LIDAR-data for intelligent thinning of data and deriving of terrain edges.

MapView for HYDRO_AS-2D

Easy creation of animated maps from HYDRO_AS-2D calculation results to illustrate the progression of a flood caused by heavy rain or flood events.

Stream Network Generator

Efficient generation of 2D meshes for river channels. The Stream Network Generator uses profile plot data and shoreline information for this purpose.


JabPlot helps you create professional profile and longitudinal plots with just a few mouse clicks.

Hydrotec | About Us

Hydrotec is a consulting firm focusing on the analysis of quantitative and qualitative aspects of water resources systems and environmental issues as well as data ascertainment, planning of water resources management projects, project management, public relations and the development and marketing of water resources management software.

Hydrotec develops and distributes complex and powerful simulation models and software tools. With many years of experience in geographical information systems and data base systems we have evolved into experts in the application of these tools to the discipline of water resources management.

Founded in 1981 Hydrotec today has about 55 employees at its two offices in Germany. The Hydrotec team includes highly qualified civil engineers, geographers, physicists, biologists, mathematicians and computer scientists. The wide range of knowledge facilitates interdisciplinary work and is frequently complemented by partnerships with other consulting firms.

Get in touch


 Angela Deppe

Tel.:  +49 (0)241–9 46 89–800

Fax: +49 (0)241–9 46 89-14

E-Mail: Angela.Deppe@hydrotec.de