Urban flood problems range from relatively localised issues such as water entering a few basements, to major incidents such as large city areas being inundated for several days. The impacts of urban floods are widespread, but can include temporary relocation of people, risk of diseases, deterioration of water quality and damage to infrastructure, crops, buildings and vehicles. DHI's approach to modelling and management of urban flooding has been very successful in providing:

• Flood hazard zones
• Flood impact in terms of extent, duration and cost
• Flood mitigation measures
• Real-time flood warning systems for cities
• Real-time control for optimal use of storage capacity in the system