The modeling tools that can be used within the DSS are the DHI products MIKE HYDRO, NAM, MIKE 11 and MIKE SHE. Below is short description of each modeling tool.

Short Description of MIKE HYDRO

MIKE HYDRO offers a map based user interface for model building, parameter definition and results presentation for water resources related applications. MIKE HYDRO Release 2014 includes the following modules:

  • Basin module (MIKE HYDRO Basin)
  • River module (MIKE HYDRO River)


MIKE HYDRO Basin is the successor of DHI's ‘MIKE BASIN’, former product for integrated water resources management and planning. It is a model framework for a large variety of applications concerning allocation, management and planning aspects of water resources within a river basin. Applications related to the MIKE HYDRO Basin module include:

  • Integrated Water Resources Management studies
  • Provision of multi-sector solution alternatives to water allocation and water shortage problems
  • Reservoir and hydropower operation optimization
  • Exploration of conjunctive use of groundwater and surface water
  • Irrigation scheme performance improvements  


MIKE HYDRO River is a modeling framework for defining and executing one-dimensional river hydraulics models for a large variety of river related project applications. Release 2014 of MIKE by DHI is the first release including the MIKE HYDRO River module. This first release contains a subset of all required features and options which are available in the current User Interface framework for MIKE 11. Applications related to the MIKE HYDRO River module include:

  • Flood analysis and flood alleviation design studies
  • Real time flood or drought forecasting
  • Dam break analysis
  • Optimization of reservoir and gate operations
  • Ecology and water quality assessments in rivers and wetlands
  • Water quality forecasting
  • Sediment transport and long term assessment of river morphology changes
  • Wetland restoration studies

Short Description of NAM

The NAM model is a deterministic, lumped (catchment is looked upon as a single unit with average values of parameters) and conceptual Rainfall-runoff model. It can present the processes that take place in the surface zone storage, root zone storage and the ground water storage. In addition, it contains provision to deal with snow melt and Irrigation schemes. Applications related to the NAM include:

  • Runoff forecasts
  • Extension of runoff series
  • Estimate effects of Climate Change, for instance on stream flow

Short Description of MIKE 11

MIKE 11 is a professional engineering software package for the simulation of flows, water quality and sediment transport in estuaries, rivers, irrigation systems, channels and other water bodies. It is a one-dimensional modeling tool for the detailed analysis, design, management and operation of both simple and complex river and channel systems. With its flexibility, speed and user friendly environment, MIKE 11 provides a complete and effective design environment for engineering, water resources, water quality management and planning applications.


The Hydrodynamic (HD) module is the core of the MIKE 11 modeling system and forms the basis for most modules including Flood Forecasting, Advection-Dispersion, Water Quality and sediment transport modules. The MIKE 11 HD module solves the vertically integrated equations for the conservation of mass and momentum, i.e. the Saint Venant equations.


Typical applications of MIKE 11 HD module include:

  • Flood forecasting and reservoir operation
  • Simulation of flood control measures
  • Operation of irrigation and surface drainage systems
  • Design of channel systems
  • Tidal and storm surge studies in rivers and estuaries


The primary feature of the MIKE 11 modeling system is the integrated modular structure with a variety of add-on modules each simulating phenomenon related to river systems.

In addition to the HD module described above, MIKE 11 includes add-on modules for:

  • Hydrology (rainfall-runoff)
  • Advection-Dispersion
  • Models for various aspects of Water Quality
  • Sediment transport


Short Description of MIKE SHE

MIKE SHE is a modeling framework, including a range of numerical methods for each hydrological process. It has an advanced, conceptual, model independent user interface with full water balance accounting for all hydrological processes.

The hydrological processes and numerical methods can be combined, depending on the requirements of your application and the availability of data. All numerical engines in MIKE SHE are parallelized to make efficient use of available multi-core resources. MIKE SHE simulates the following processes:

Overland Flow

MIKE SHE includes both a simple overland flow method for rainfall-runoff modeling and a simplified 2D finite difference method for detailed runoff and flood modeling. It can simulate detailed flooding based on fine scale topography in a coarser numerical grid, as well as detailed two-way exchange with rivers.

River Flow

Channel flow can be simulated using full, 1D hydrodynamics, including operation of hydraulic structures, such as gates, pumps and weirs. For larger networks, a faster and less data intensive flow routing method is also available.

Unsaturated Zone Flow

Vertical unsaturated flow can be simulated using a 1D, finite difference multilayer

method or a two-layer root zone model based on water balance calculations in the unsaturated zone.


Rainfall and evapotranspiration are the largest parts of the water balance. In

MIKE SHE, vegetation based actual evapotranspiration is calculated from interception, soil, ponded water, the root zone and groundwater.


In cold climates, MIKE SHE converts elevation corrected precipitation to wet and dry snow storage. Snow can be converted to surface water using the temperature, radiation, and rain-on-snow parameters.


Typical applications for MIKE SHE are:

  • Conjunctive use and management of surface water and groundwater
  • Irrigation and drought management
  • Wetland management and restoration
  • Environmental river flows
  • Floodplain management
  • Groundwater induced flooding
  • Land use and climate change impacts on groundwater and surface water
  • Nutrient fate and management
  • Integrated mine water management