All kinds of blue and green infrastructure in the settlement areas (rivers, river valleys, water reservoirs, natural and artificial wetlands, parks, squares, orchards, gardens, allotments, green street strips, grasslands and other) decrease runoff and increase retention capacity. Preservation of the existing elements and creation of new elements is a contribution to heavy rain risk management…
Flood early warning systems – if existing for the area – provide information that allow the actuation of emergency action (e.g. set up of a command unit, observation of risk areas) prior to the event and before damages occur. However, reduction of losses is possible only if early warning information are interpreted and assessed correctly,…
This group of measures includes linear and aerial permeable elements, furrows, rainwater reservoirs, vegetation roofs and vegetating for decentralised management of rain water aiming on better infiltration and evaporation in settlement areas. Applied in a complex, it can reduce not only the total volume of surface water but also the speed of surface runoff significantly.…
Land use and land cover changes as well as intensification or extensification of land use are altering the hydrologic system and have potentially large impacts on flooding in lower lying areas. Upstream and downstream interconnections, interactions and action’s intereffects should be taken into consideration in planning activities, especially when problems occur in settlement areas. Formal…
The measures reside in terrain modifications of channels and floodplain to increase their ability to slow down the runoff and to create inundation zones so that potential consequences of surface runoff would be reduced. They can include individual modifications that are generally termed “restoration”. Specifically, modification of the channel’s course, branching of streams, channel stabilisation,…
This measure is usually carried out in form of sets of barrages built in a direction perpendicular to a stream’s direction. The aim of the measure is to modify the erosion and accumulation processes in torrent streams through the retention of water and eroded material, e.g. when settlement areas are at risk. It effect is…
