Dhi Mike 21 -

Cities use MIKE 21 to model 100-year flood events. By combining river inflows (MIKE 11) with rainfall runoff (MIKE URBAN) and MIKE 21 for 2D overland flow, modellers produce high-resolution flood depth and velocity maps. These maps are used for:

The standard workflow involves three main steps: dhi mike 21

DHI is actively integrating MIKE 21 into digital twins—real-time, data-assimilating models that mirror physical water systems. For example: Cities use MIKE 21 to model 100-year flood events

The move toward MIKE+ (unified 1D-2D-3D environment) and cloud-based MIKE OPERATIONS means future MIKE 21 models will be more automated, faster (GPU acceleration), and accessible via web APIs. The move toward MIKE+ (unified 1D-2D-3D environment) and

The versatility of MIKE 21 has made it indispensable across multiple industries. Here are typical use cases:

After calibration, validate with independent data (e.g., a different storm event). Then run scenarios: “design flood,” “future climate SLR +20cm,” or “new breakwater alignment.”

For fine sediments (silt, clay) that exhibit cohesive behavior—flocculation, settling, and erosion thresholds. Used in harbors, estuaries, and dredging studies.