The land-sea limit corresponds to the Highest Astronomical Tide (HAT) in the case of a tide of coefficient 120 and under normal meteorological conditions (no offshore wind and mean atmospheric pressure of 1013 hPa). This geometric line is naturally defined as the intersection of a HAT model (extended to the coast and the top end of the upper estuary) based on the available Bathyelli surfaces, and a high-resolution digital terrain model of the coastal area. It corresponds to the highest limit of the intertidal area and takes into account, when they exist, the 3 administrative maritime limits which are: the transversal limit of the sea (LTM), the salt water limit (LSE) and the limit of maritime jurisdiction (LAM). This limit is measured (quoted) in relation to the local hydrographic chart datum and to the levels of reference for France (IGN69 and IGN78 for Corsica). Relations to other levels of reference (mean sea level and ellipsoid) are known. The land-sea limit product, mainly results from the exploitation of the two products Litto3D®/RGEALTI® and Bathyelli, and represents, with a metric resolution (1 to 5 metres), this theoretical entity by a set of 2D polylines describing the nature of the coast (artificial or natural, rocky or sandy, steep or flat, etc.). The method used for calculating the land-sea limit makes it possible to produce a continuous, homogeneous and spatially coherent limit on the entire French metropolitan coastal area.

The land-sea limit corresponds to the Highest Astronomical Tide (HAT) in the case of a tide of coefficient 120 and under normal meteorological conditions (no offshore wind and mean atmospheric pressure of 1013 hPa). This geometric line is naturally defined as the intersection of a HAT model (extended to the coast and the top end of the upper estuary) based on the available Bathyelli surfaces, and a high-resolution digital terrain model of the coastal area. It corresponds to the highest limit of the intertidal area and takes into account, when they exist, the 3 administrative maritime limits which are: the transversal limit of the sea (LTM), the salt water limit (LSE) and the limit of maritime jurisdiction (LAM). This limit is measured (quoted) in relation to the local hydrographic chart datum and to the levels of reference for France (IGN69 and IGN78 for Corsica). Relations to other levels of reference (mean sea level and ellipsoid) are known. The land-sea limit product, mainly results from the exploitation of the two products Litto3D®/RGEALTI® and Bathyelli, and represents, with a metric resolution (1 to 5 metres), this theoretical entity by a set of 2D polylines describing the nature of the coast (artificial or natural, rocky or sandy, steep or flat, etc.). The method used for calculating the land-sea limit makes it possible to produce a continuous, homogeneous and spatially coherent limit on the entire French metropolitan coastal area.

Plan Local d'Urbanisme (PLU) numérisé. Ce lot informe du droit à bâtir sur la commune de AIGUILLON. Ce PLU est numérisé conformément aux prescriptions nationales du CNIG.

Réseau d'eau potable (canalisations et ouvrages de défense incendie) du syndicat intercommunal d'alimentation en eau potable et d'assainissement (SIAEPA) de Saint Selve (communes de Saint-Selve, Saint-Morillon, Saint-Michel-de-Rieufret)

Emprise des Zones d'Activités Économique (ZAE) communautaires et non communautaires, sur le territoire de la Communauté de communes de Montesquieu, à l'échelle du cadastre DGFIP

Informations relatives à l'évolution des zones de pêche en Atlantique Nord Est, par chalut de fond.

Ce jeu de données recense les fontaines consacrées sur le territoire du Parc naturel régional des Landes de Gascogne, détermine leur vertu et indique leur état de conservation.

Ce jeu de données constitue l'inventaire des cercles présents sur le territoire du Parc naturel régional des landes de Gascogne. Pour chaque cercle est précisé sa dénomination, son nombre d'adhérents, son propriétaire, le type de gérance et sa date de création.

Carte Communale (CC) numérisée. Ce lot informe du droit à bâtir sur la commune de MONMADALES. Cette CC est numérisée conformément aux prescriptions nationales du CNIG.

Données de relief acquises par levé au laser aéroporté. La donnée se présente au format Grid ArcInfo. L'altitude est exprimée en mètre (positif vers le zénith) par rapport au référentiel IGN69. Ce MNT est issu de données source de type "last pulse" (i.e. sol, bâtiments, sol sous la végétation), acquises en 2004. La méthode d'interpolation employée est le krigeage.