Catchment Food Areas — Métropole

The catchment feeding area (ACA) is defined on a hydrological or hydrogeological basis. It corresponds to the surfaces on which the water infiltrating or runoff participates in the supply of water from which the water is taken. Thus, the AAFC corresponds to: — for a sampling work intended for drinking water in surface water: to the sub-watershed located upstream of the water intake(s) possibly supplemented by the area concerned by the supply of groundwater external to that watershed (e.g. base table or accompaniment table for watercourses), — for a sampling work intended for drinking groundwater: at the feeding basin of the water point(s) (place of the soil surface points that contribute to the supply of the catchment). The concepts of “feeding area” and “feed pool” of catchments (AAFC, LAC) are considered synonymous here. In the case of several water intakes (surface water) or water points (ground water) close to each other, the AAFC will cover all the catches/water points in the sampling structure to which they are connected. The AAC may cover several sampling works. The AAFC does not have a founding regulatory text. The regulations refer to its area of protection. Note: The ST Sandre gradually completes the Repository of Capturing Food Areas (ACA). For this reason, the metadata sheet has the status “In the process of creation”. NB: The AAFCs currently being created are visible on the community portal catchment area: https://aires-captages.fr Only Sandre codified AACs are downloadable.