La Houille Blanche
Number 3-4, Juin 1999
|Page(s)||77 - 81|
|Published online||01 August 2009|
La modernisation du système CRISTAL de gestion des crues et des étiages du bassin de la Loire
The CRISTAL system of floods and low water management in the Loire basin: the modernization
DIREN Centre, Service de Bassin Loire-Bretagne
2 Etablissement Public d'Aménagement de la Loire et de ses Affluents
The basin of the river Loire in France covers 115 000 km2. For floods prevention, water ressources management, and more generally for a permanent monitoring of the environment, a system of hydrological telemetric stations is under operation since 1985 on the river and its tributaries. Data from more than 150 stations are sent to 8 centers for processing calculation, and decision regarding reservoir management, flood warming, and operationnal hydrology monitoring.
To maintain reliability, and satisfy new needs, a renovation of the equipment and software is actually conducted. A first investment of 36.6 millions FF has started in 1996.
Those expenses cover the telemetry stations (with extension to 210 stations) the communication system (telephone, radio, satellite), and the supervision system.
Part of the operation includes advanced data treatments dedicated specifically to decision support, namely: hydrological model, meteorological radar image processing integration of information from heterogeneous sources, reporting and dissemination of information.
© Société Hydrotechnique de France, 1999