FLOOD RISK MANAGEMENT

Île-de-France region flood risk management strategy is mainly focused on retention basins, some of which date back to the 1970s. However, this is not the only solution and through a state of the art study of flood risk management, we can determine on a large scale 6 types of devices:

1.1 MITIGATE

Use natural or man-made structures and spaces to reduce water velocity and/or turbidity. This increases the time it takes for a given volume of water to move along the track and provides an increased opportunity for infiltration.

1.3 CREATION

Construct or generate new landforms/structures in or near water bodies on which development and/or alternative land uses may be assigned.

1.5 REALIGN

Reduce exposure to flood risk by repositioning the receptor (e.g. community, critical infrastructure, property) or changing land use classification.

1.2 RESISTANCE

To reduce a community’s exposure to flood risk by preventing water ingress through the use of flood risk management measures.

1.4 RELIEVING

Increase the capacity of a water supply system (o provide additional floodable areas?) to reduce peak flood levels and limit the extent to which vulnerable locations are at risk of flooding.

1.6 TO LIVE WITH

Use flood-resilient design to organize the built and natural environment. A range of spatial tactics can be applied depending on a particular context, scale or timescale to the presence of water.

Data : Rettrofitting for flood resilience - A guide to building and community design - RIBA -2022