River basin is The area of land from which all surface run-off flows through a sequence of streams, rivers and, possibly, lakes into the sea at a single river mouth, estuary or delta River basin district corresponds to a national river basin district (example: rivers of Corsica)) or a portion of an international river basin district situated on the territory of a Member State (examples: Meuse, Sambre) River basin district is the main unit for management of river basins and is represented cartographically by the aggregation of sub-basins component.

This file describes the following surface water bodies : Lake waters, Transitional waters and Coastal water - Lake waters : Body of surface water means a discrete and significant element of surface water such as a lake, a reservoir. Surface water body are derived from BDCarthage® v3 hydrographic theme from BDCarto® - Transitional waters : Bodies of surface water in the vicinity of river mouths which are partly saline in character as a result of their proximity to coastal waters but which are substantially influenced by freshwater flows - Coastal water : Surface water on the landward side of a line, every point of which is at a distance of one nautical mile on the seaward side from the nearest point of the baseline from which the breadth of territorial waters is measured, extending where appropriate up to the outer limit of transitional waters

A representation of the centrelines of surface water bodies is requested and is composed of WaterBodyLine drawing and virtual segments Each segment must be classified according to its type, using the continua element value : realSurfaceWaterSegment realUndergroundSegment virtualSegmentLake virtualSegmentToConnectTributary virtualSegmentTransitionalWater virtualSegmentCoastalWater virtualSegmentTerritorialWater virtualSegmentNotUnderOtherClassification Surface water body line means a discrete and significant element of surface water such as a stream, river or canal, part of a stream, river or canal. Surface water body lines are derived from BDCarthage® v3 hydrographic theme from BDCarto®

GroundWaterBody means a distinct volume of groundwater (All water which is below the surface of the ground in the saturation zone and in direct contact with the ground or subsoil.) within an aquifer or aquifers (Subsurface layer or layers of rock or other geological strata of sufficient porosity and permeability to allow either a significant flow of groundwater or the abstraction of significant quantities of groundwater)

This files contains drinkingWaterProtectionArea. water catchement with 10m3 average daily flow per day, used for drinking water supply, private collective supply and food processing. List from Health database (SISEAUX) - January 2015.

Communes (surface) du Bassin Artois Picardie. Mise à jour au 01/01/2021

Description of monitoring sites established for 2016-2021 district Master Plan for Water Development and Management (SDAGE)