Plan, Prepare and Adapt

Coastal Flood Modelling Software

Analyse, model and simulate flood risks

Gain powerful insight from hydrologic and hydraulic models to assess the potential impact of coastal flooding on the built and natural environment to help design appropriate flood defences. 

Choose the modules you need for maximum flexibility

The modular structure of MIKE Powered by DHI software offers the most advanced functionality with maximum flexibility as you can pick and choose which combination of modules are best suited for the nature of your work and intended outcome. Alternatively, select from one of our pre-bundled software subscriptions.

The only software suite you need to understand and mitigate flood risks in coastal, urban or riverine areas

Get started with these Core Modules

MIKE Preprocessing & Postprocessing (PP) and MIKE 21 Hydrodynamics (HD) are the foundational tools for performing all coastal flood modelling work. 

MIKE-PP---Mesh-Generator 421

MIKE Preprocessing & Postprocessing (PP)

Transform raw data into an understandable format

Begin your data visualisation journey in an integrated work environment with compatible routines to ease data input, analysis and presentation of results 

Use PP to create efficient model mesh using mixed elements

Features a tidal and boundary condition generator

Convert wave spectra data into model format

Generate 2D time-varying hurricane or cyclone wind forcing files to perform storm surge modelling 

MIKE 21 HD3 421

MIKE 21 Hydrodynamics

Perform 2D modelling of hydrodynamic processes

A central component to most modelling tasks, understand coastal inundation through the simulation of water levels and 2D free surface flow in response to boundary conditions

Seamlessly represent storm surge caused by wind and pressure

Model sub-grid features such as culvert, weirs and dikes

Simulate wave driven currents

Couple MIKE 21 HD with 1D river channel and 1D urban drainage network models for more robust flood studies

“By using MIKE21 HD to model future storms influenced by climate change, we can use the results for sustainable planning to control the risk of flooding in the Limfjord.”

Per Sørensen, Danish Coastal Authority

Add Supplemental Modules for increased functionality

Choose from a curated selection of supplemental modules with specialised features and configurations that allow you to address any coastal flooding challenge. 

M21 SW 350-212

MIKE 21 Spectral Waves (SW)

Analyse and predict wind-generated waves

Simulate the growth, decay, and transformation of wind-generated waves and swell

Assess wave climates in offshore and coastal areas in hindcast and forecast mode

Includes the main physical phenomena including wave-wave interaction, white-capping, dissipation, refraction and shoaling

Couple with Hydrodynamics (HD) and process engines for enhanced optimisation

M3WFM2 350-212

MIKE 3 Wave FM

Simulate wave breaking, wave run-up and overtopping

Perform 3D simulations of all physical transformation wave processes for coastal flood studies

Understand the impact of strongly nonlinear waves and infragravity waves caused by breaking waves

Calculate wave transmission and reflection through the representation of a porous structure with natural porosity versus using semi-empirical formulas

M21SM 350-212

MIKE 21 Shoreline Morphology (SM)

Assess changes to shoreline morphology

Undertake long-term shoreline morphodynamic simulations in 2D environments for complex bathymetries or coastal structures which are challenging for standard one-line shoreline models

Combine cross shore profiles with 2D modeling including hydrodynamic, wave forcings and sand transport techniques

Calculate dune erosion during storm events

“DHI’s new powerful MIKE 3 Wave FM model has been an extremely valuable tool for assessment of coastal flooding due to wave overtopping. In addition, the 3D visualisation of the results has been a game changer for illustrating the risk prone areas to the many stakeholders.”

Regional Coastal Authorities, Landes France

MIKE 21 Sand Transport (ST)

Predict the fate of sand due to currents

Make short and long term predictions of sediment transport capacity and resulting bed level changes for non-cohesive sediment (sand) due to currents or combined wave currents

Perform fully dynamic coupled morphological simulations with HD, Wave, and ST modules


LITPACK (Littoral Processes)

Predict long-term coastline evolution

Efficiently simulate a wide range of wave and current scenarios along straight or nearly straight coastlines

Make predictions of coastal profiles, sediment budgets and long-term coastline evolution by accurately calculating littoral drift for robust coastal zone management 

M21 MT 350

MIKE 21 Mud Transport (MT)

Simulate mud transport, settling and deposition

Visualise the erosion, transport, settling and deposition of cohesive sediment (mud) in marine, brackish and freshwater areas with this multifraction and multilayer model

Assess dredging operations such as time dependent spilling rates, barge track and barge filling

Analyse the impact of flood water on urban infrastructure or a river channel network

These modules are also compatible with MIKE 21 and can help address water quality, saltwater intrusion, contaminated water overflows, infiltration, and fluvial flooding concerns.  


2D Overland Flow Hydrodynamics (HD)

Simulate distributed rainfall and infiltration in urban areas

Perform flood impact assessments and create hazard maps using this core element of MIKE FLOOD

Couple with MIKE HYDRO River, MIKE URBAN collection systems,  and MIKE 21 2D surface flow to create an all encompassing three-way modelling tool for more dynamic coastal flooding studies

MU Sewer 350


Model the impact of flooding on urban infrastructure

Simulate unsteady flow in pipe and channel networks taking into account overland flow and sewer networks

Locate and manage contaminated water overflows in a coastal flooding event

Model the inflow of seawater, as normal water, in a pipe network

MU 350

MIKE URBAN CS-RR-Rainfall Runoff

Perform wet weather management tasks

Analyse rainfall dependent inflows and infiltration mitigation as a response to urban flooding

Includes multiple rainfall-runoff models such as time area method, kinematic wave and linear reservoir 

Features a Rainfall Dependent Infiltration (RDI) module

Hydro 350

MIKE HYDRO River - Rainfall Runoff (RR)

Model the impact of flooding on a river network

Model river hydraulics, water quality, flooding, forecasting, catchment dynamics and runoff

Understand the impact of coastal flood water on your river channel network and the use of river water (e.g. potable water extraction)

Manage river flood control structures in a fully integrated way



Perform water quality and ecological studies

Analyse the impact of flood water on water quality for remediation planning and permitting

Make spatial predictions of ecosystem response to contaminated flood water including agricultural productivity

Assess the public health risk of exposure to waterborne diseases

citycadss2 350

City Adaptation Decision Support System (CADSS)

Calculate flood damage costs and risks

Assess and document the impact of flooding on a city due to rising sea levels and/or extreme rainfall events with this user-friendly, yet powerful tool

Create damage and risk maps based on GIS data to provide valuable input to decision makers for prioritising between various mitigation options

The only software suite you need to understand and mitigate flood risks in coastal, urban and riverine areas

Convert the knowledge gained from your model into actionable information

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DHI is here to provide you with more information, answer any questions you may have, and discuss the best technological solutions to help you tackle the challenges in achieving true coastal flooding resilience.