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    MIKE 21 Alternatives

    MIKE 21 is described as 'is the ultimate Swiss army knife of coastal modelling. If you need to simulate physical, chemical or biological processes in coastal or marine areas, MIKE 21 almost certainly has the tool you need'. There are nine alternatives to MIKE 21 for Windows, Linux and Wine. The best alternative is Storm Water Management Model, which is both free and Open Source. Other great apps like MIKE 21 are HEC-RAS (Free), GeoHECRAS (Paid), MIKE 11 (Paid) and Delft3D (Free, Open Source).

    This page was last updated May 21, 2022
    MIKE 21
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    MIKE 21 is the ultimate Swiss army knife of coastal modelling. If you need to simulate physical, chemical or biological...
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    1. EPA's Storm Water Management Model (SWMM) was first developed in 1971, and has since undergone several major upgrades.
      • FreeProprietary
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      HEC-RAS is designed to perform one-dimensional hydraulic calculations for a full network of natural and constructed channels. The following is a description of the major capabilities of HEC-RAS.


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      GeoHECRAS speeds up HEC-RAS model creation using AutoCAD and GIS data sources. Work directly off of Google Maps, viewing and editing the model in 2D and 3D. Automated cross section cutting reduces time in building a model.
      • Windows
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      MIKE 11 is synonymous with top quality river modelling covering more application areas than any other river modelling package.
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      • FreeOpen Source
      • Windows
      • Linux
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      This webportal facilitates the Delft3D Open Source Community to come together to share knowledge, brainstorm on new features and build working relationships.
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      • Windows
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      GeoHECHMS greatly speeds up the creation, analysis, and review of stormwater models. It automates subbasin delineation, curve number (CN) computation using land use and soils maps, and lag time (time of concentration) computation.
      • Windows
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      SOBEK is a powerful modelling suite for flood forecasting, optimisation of drainage systems, control of irrigation systems, sewer overflow design, river morphology, salt intrusion and surface water quality.
      • FreeProprietary
      • Windows
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      Halcrow have developed ISIS Free so that it offers an integrated 1D and 2D modelling software package.
      • Windows
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      MIKE FLOOD is the most complete toolbox for flood modelling available.
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    Showing 9 of 9 alternatives