Friday, 1 October 2010
MIKE FLOOD – The ultimate modelling software for Flood and Water Management Act 2010 and Flood Risk Management (Scotland) Act 2009 work

Implementation of the first parts of the Flood and Water Management Act 2010 began on the 1st October 2010.

In conjunction with the act, the Flood Risk Regulations 2009 have been established to implement the requirements of the EU Floods Directive in England and Wales. These regulations outline the roles and responsibilities of the various authorities consistent with the Flood and Water Management Act and provide for the delivery of the outputs required by the Directive, specifically: -

Preliminary Flood Risk Assessments (PFRAs), which will allow the identification of areas of potential significant risk (required by 2011)

Flood Hazard Maps and Flood Risk Maps, showing impact and extent of possible future significant flood events

Flood Risk Management Plans, in order to identify how significant flood risks are to be mitigated

The Environment Agency will also be required to develop a national strategy for the management of coastal erosion and all sources of flood risk for England.

The act enhances the role of local authorities so that they take on responsibility for leading the co-ordination of flood risk management in their areas. Local flood risk includes surface runoff, groundwater, and ordinary watercourses

The Flood Risk Management (Scotland) Act came into force on 26th November 2009 and transposes the EC Floods Directive into national law and streamlines the process by which local authorities in Scotland prepare flood schemes.

It places a duty on the Scottish Government, SEPA, Scottish Water and local authorities to better co-ordinate the assessment and management of flood risk. Whereas current policy focuses on river and coastal flooding, the Act covers all sources of flooding, including overloaded sewers.

In addition SEPA will be required to carry out a national assessment of flood risk by 2011, produce new flood risk and hazard maps by 2013 and put in place Scotland's first national flood risk management plan by 2015.

MIKE FLOOD (together with its sister software packages MIKE SHE, MIKE BASIN and ECOLAB, and its full component packages MIKE 21, MIKE 11 and MIKE URBAN) combines the best science of DHI with practical and efficient tools and provides the most complete toolbox for flood modelling available. It includes a wide selection of 1D and 2D flood simulation engines, enabling the fast and efficient modelling of virtually any flood problem whether it involves rivers, floodplains, floods in streets, drainage networks, coastal areas, dam and defence breaches or any combination of the above. MIKE SHE also permits the modelling of surface / groundwater interaction.

MIKE FLOOD builds on well proven technology together with DHI’s extensive international flood modelling expertise and is a key modelling tool in all phases of Flood and Water Management Act 2010 and Flood Risk Management (Scotland) Act 2009 work: -

MIKE FLOOD can be applied as a screening tool simulating the areas likely affected by heavy rainfalls

MIKE FLOOD and MIKE SHE can model flood risks and flood hazards from almost all sources in any required detail

MIKE FLOOD can also support the development of flood risk management plans by simulating the effects of flood protection and flood mitigation schemes

MIKE FLOOD is applicable at any scale from small developments to regional models.

Enhanced application examples

MIKE FLOOD has been used extensively for Rapid Flood Hazard Mapping, providing fast and efficient preliminary assessments of flood risk over larger areas and at low cost. The assessments are typically made in simple 2D models forced by rainfall, river flooding and/or storm surge. This also creates a good basis for more detailed analyses in the subsequent phases.

Dynamic flood hazard and flood risk modelling with MIKE FLOOD can be very useful for running hazard mapping scenarios (based upon robust hydraulic modelling), thereby optimising flood defences and evacuation planning for ‘Hazards to People’.

MIKE FLOOD can accommodate simultaneous urban, river and surface water flooding by way of a very flexible 3-way coupling of 1D engines for sewer and river networks (MIKE URBAN and MIKE 11) and 2D overland flow engines (MIKE 21) providing flow transfers and feedback mechanisms between all three engines.

MIKE SHE has been used not only to model the impacts of groundwater induced flooding, but also to model the effects of groundwater on a sub surface drainage system, and associated effects on surface flooding. MIKE SHE can also consider flood mitigation at source by modelling wetlands and riparian barriers to slow runoff into watercourses.

In a recent independent review carried out for the Environment Agency, MIKE FLOOD received the highest marks not only for speed, but also for model setup, runtimes, stability, presentation and visualisation of results, sensitivity tests and file management - MIKE FLOOD achieved the highest overall score in the study. In the forthcoming Release 2011, there are further improvements in both speed and usability.

For more information about MIKE FLOOD or the other MIKE by DHI software products, feel free to contact Steve Flood on +44 1752 691723 or

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Welcome to DHI UK

DHI is an independent, international consulting and research organisation with the global objective of advancing technological development and competence with respect to water, in all of its environments.

Worldwide, we offer a wide range of consulting services and leading edge technologies, software tools, environmental laboratories, and physical model test facilities, as well as field surveys and monitoring programmes. Designated as a not-for-profit organisation, DHI is able to invest a considerable portion of its resources in research and development. Today we co-operate with many Universities, and research organisations, and are recognised globally for our innovation and expertise.

In the UK, DHI offers niche or specialist consultancy services in the water and environment market to government agencies, commercial entities and selected research organisations. We fulfil a research based specialist advisor role; a ‘Consultant to the Consultants’. We also supply and support the renowned MIKE by DHI suite of integrated water modelling tools.

MIKE by DHI software is the result of years of experience and dedicated development and has, in many regions, become the standard modelling tool. It transforms our science into practice and gives you the competitive edge and, through the DHI Academy, you can rest assured that there is a local team of highly skilled experts committed to train and support you every step of the way.

MIKE by DHI truly models the world of water - from mountain streams to the ocean and from drinking water to treatment plant and beyond.

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