A Local public institution located overseas, similar to the water agencies in continental France, which is responsible for facilitating the various activities of common interest in the management of water and aquatic environments to help achieving the objectives of the river basin management plans (SDAGEs). There is currently a water board in the Reunion, Martinique, Guadeloupe and Guyana. Since Mayotte became a Department, there are thoughts of creating a water board.
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Warning issued in advance by the departmental flood forecasting services. In the event of heavy rainfall or hydrological alert, a flood warning is sent to the Prefect, who then alerts the mayors of the catchment areas concerned.
Warning issued in advance by a special state service (flood forecasting service). In the event of a rainfall or hydrological alert (triggering when thresholds are exceeded), the flood forecasting service offers the Prefect the alert of the mayors of the watersheds concerned. As a severe overflow flood, the flood warning service broadcasts, for prefects and mayors, hydrological situation bulletins and information on the evolution of water levels . In 1994, 54 flood warning services monitored 16,000 km of waterways in France using automated measurement networks.
Group of local authorities established, at a watershed or a group of sub-watersheds scale, in order to facilitate the flood prevention, the defense against the sea, the management of water resources, and the preservation and management of wetlands. When a Sub-basin Management Plan has been set up, the Public river-basin territorial agency contributes to its monitoring and development. It ensures also the consistency of the management project of the Public water management and development agency.
Method used to evaluate the abundance of fish species in a portion of a stream and to precise the different populations. It consists in the creation of an electric current which attracts fish. Then, paralyzed by electricity, they rise to the surface, which helps their identification and counts. After a little while, fish are free to circulate in the stream again.
Methodical review allowing both to identify and quantify the different components of water, but also to evaluate its characteristics and state, according to specific criteria. This review is based on the following of specific protocols adapted to the various controlled parameters.
Self-monitoring system generally required by law, to check the operation or impact of installations (e.g. wastewater-treatment plants, industrial sites, etc.). Generally speaking, it addresses the assessment water quality at the output of installations classified for environnemental protection, and the control of wastewater-treatment plants and sanitation networks.
Group of local authorities in charge of the local management project and of the territorial water coordination, at the watershed scale. The Public water management and development agency has to ensure flood prevention as well as non-state-owned rivers management.
Mineral active product, mainly metals or metalloids, whose accumulation, even at low concentrations, affects the environment and organisms. The main mineral micro pollutants controlled (from both natural and anthropical occurrence) are cadmium, mercury, copper, chromium, zinc, nickel, lead, etc.
Organic active ingredient, usually synthesized by the chemical industry, whose accumulation, even at low concentrations, can be toxic. The main organic micropollutants controlled are volatile organic compounds (VOC), hydrocarbons, andpolychlorinated biphenyl(PCB).
Physical and chemical characteristics of water. Inside a water analysis, the observed parameters are quite numerous, and all of these allow to determine the physical-chemical water quality, which determines the maintenance of river biodiversity. These parameters could be for example, temperature, turbidity, concentration of organic matter, mineral, nitrogen, etc.
Framework Document elaborated in each metropolitan area, by the Regional Council and the regional prefect, in association with local stakeholders, locally developed the green and blue infrastructure. The Regional Ecological Coherence Scheme (SRCE) is to identify biodiversity reservoirs and ecological corridors that link them. It includes an action plan to ensure the preservation and restore ecological continuity identified while taking into account land use planning issues and human activities. The SRCE must also be compatible with the planning documents, such as territorial coherence…