Identifying and re-establishing of flood plains and deposition areas, such as by removal of protection structures for agricultural land, contributes to the retention of water along rivers and, thus, to heavy rain risk reduction. In the past, most floodplains have been taken over for other uses; former floodplain forests are separated from river and runoff…
In case of a major danger, it might be useful to relocate existing buildings. Due to the avoidance and removal of the damage potential the resettlement and reallocation effects the risk reduction permanently. Financial support facilitates the implementation of the measure. Resettlement and reallocation measures need to be assessed and reviewed in advance. Social and…
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…
Relevant building openings are protected against the entry of water by constructing steps or flights of stairs with raised platforms and/or raised light wells. The edge of light wells at buildings should be placed 15 to 30 cm above the ground level dependent on the situation of the premises and risk. For basement entrances, additional…
The ground floor level of new buildings can be constructed in such a way that it is raised above expected flood levels. To achieve this, the following methods (among others) are available: 1. building on solid block foundations 2. raising the building on pillars 3. building on backfilled foundations What all designs have in common…
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.…
