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Le ralentissement dynamique pour la prévention des inondations : guide des aménagements associant l'épandage des crues dans le lit majeur et leur écrêtement dans de petits ouvrages

Abstract : This technical and methodological guide was compiled for the French Ministry of Environment. It presents the concept of « Dynamic Flood Slowing Down » and the state-of-art for its implementation. Its aims at providing guidelines to carry out projects complying with this principles, whose implementation was encouraged by the Request for Proposals issued by the Ministry in a Flood Prevention Program in 2002 (01/10/2002 letter).First, the document introduces the concepts of « Dynamic Flood Slowing Down », also called sometimes « Dynamic Flood Retention », and hereafter denoted DFR. Then, the Guide present a methodology to implement DFR for catchment-scale integrated management. Examples of realizations or projects in hillslopes as well as in floodplain are given. The importance of the communication and negotiation phases is stressed, because these stages are crucial for projects social acceptability. The need for a well-planned and coordinated follow-up is also emphasized. Design and procedures are then addressed. DFR may involve small-size works, and this part puts forward the need for high-standard studies, exactly like required for bigger-sized works, with carefully chosen methodological and technical choices. Elements about risk analysis and economical assessment are given, as well as a brief review of regulations in force. A glossary is appended, and other appendices are provided which present with more details technical guidelines (dimensioning methodologies) and institutional context (French national policy for flood risk management).An updated document should be made available, including projected or completed projects analyses, in order to provide illustration through concrete examples and disseminate feed-back from field experiences.
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  • HAL Id : hal-02583763, version 1
  • IRSTEA : PUB00015630

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J. Dunglas, B. Chastan, M. Lang, Christine Poulard, P. Royet. Le ralentissement dynamique pour la prévention des inondations : guide des aménagements associant l'épandage des crues dans le lit majeur et leur écrêtement dans de petits ouvrages. irstea. 2004, pp.131. ⟨hal-02583763⟩

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