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Expression inventée sur le modèle de la Trame Verte et Bleue, appliquée à la continuité écologique des sols. Largement ignorés pendant de nombreuses années, ces derniers sont pourtant essentiels au fonctionnement des écosystèmes. Ce terme désigne le réseau écologique en profondeur, à préserver et restaurer.
Service that covers, for households, or any other economic activity: the abstraction, impoundment, storage, treatment and supply of surface water and groundwater, as well as the collecting and wastewater treatment facilities that subsequently discharge into surface waters.
Direct or indirect benefit that man obtains from nature. Ecosystems, and more generally biodiversity, support and provide many services, called ecological or ecosystem services, which are sometimes classified as common and/or public good, often vital or useful services to human beings, other species and economic activities. These services include the self-maintaining services, supply services,
Extraction of fresh water from a groundwater source or surface, permanently or temporarily, and conveyed to the place of use. Water abstractions include all activities related levies generated by agriculture, industry (including energy), the supply of drinking water, or other (mineral spring authorized, production artificial snow).
Area on which the water that soaks into the ground supplies the abstraction for drinking water.
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.