Challenges in hydrometry: some examples from France
Résumé
In France, the national stream flow measurement network is ruled by the Ministry of Environment through Regional Environment Agencies (DIREN) and Flood Forecast Services (SPC/SCHAPI). Other organizations such as hydropower producers (EDF, CNR), the waterways office (VNF), research institutes (e.g. IRD in Brazil and Africa) also produce hydrometric data. The main gauging techniques are the velocity-area method (currentmeters), Doppler profilers (aDcp) and chemical dilution. Some efforts are needed to improve and quantify the quality of discharge measurements, and also to diversify the range of measuring techniques available to practitioners. In close connection with hydrometry services, research projects are being conducted on conventional and innovating instruments and techniques for flow measurement. In particular, the following issues are currently investigated: rating curves assessment and extension, uncertainties associated with various gauging methods (especially aDcp), evaluation of horizontal Doppler profilers (H-aDcp), video-based flash-flood monitoring (LSPIV).
Domaines
Sciences de l'environnement
Origine : Fichiers produits par l'(les) auteur(s)
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