Catchment Food Areas (AAC) in Burgundy-Franche-Comté

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 tablecloth 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. The Sandre gradually completes the Repository of Capturing Food Areas (ACA). Only Sandre codified AACs are downloadable. The AAFCs currently being created are visible on the community portal catchment area: https://aires-captages.fr

集水补给区（catchment feeding area, ACA）是基于水文或水文地质条件定义的，指入渗水或径流参与补给取水水源的地表范围。据此，AAFC的定义如下：
- 针对地表水饮用水取水采样工程：为取水口上游的子流域，可补充纳入该流域以外的地下水补给区域（如河道基岩或河漫滩）；
- 针对地下水饮用水取水采样工程：为取水点的补给盆地（即参与集水补给的地表土壤点位范围）。
流域的“补给区”与“补给池”概念（AAFC, LAC）在本文中视为同义词。若存在多个彼此邻近的地表水取水口或地下水取水点，则AAFC将涵盖采样单元中与其相连的全部取水设施/取水点范围。AAC可涵盖多个采样工程。AAFC暂无配套的法定定义文本，相关法规仅提及该区域的保护范围。Sandre正逐步完善取水补给区（ACA）数据库，仅经Sandre规范编码的AAC可下载。当前正在构建的AAFC可在流域社区门户https://aires-captages.fr 查看。