This product includes all Shom digital files for tidal currents on mainland French coasts (Channel and Atlantic coasts) in mesh format. These digital files indicate surface tidal current components, hour by hour and for two typical tidal coefficients (45 and 95) and maximum current speeds for a mean spring tide. Brest is taken as the reference port for viewing purposes. The current points included in these files correspond to the arrows shown on current atlases.

Tidal ranges on the French coasts of the Channel and the Atlantic for a coefficient of 95 : maximal tidal range for average atmospheric conditions..

Tidal ranges on the French coasts of the Channel and the Atlantic for a coefficient of 95 : tidal range for mean neap tides for average atmospheric conditions..

Tidal ranges on the French coasts of the Channel and the Atlantic for a coefficient of 20 : minimum tidal range for average atmospheric conditions..

Tidal ranges on the French coasts of the Channel and the Atlantic for a coefficient of 95 : tidal range for mean spring tides for average atmospheric conditions..

Marnages sur les côtes françaises de La Manche et de l'Atlantique pour le coefficient 20 : marnage minimal pour des conditions atmosphériques moyennes.

Ce produit contient, sous forme maillée, l’ensemble des fichiers numériques du SHOM relatif aux courants de marée des côtes françaises métropolitaines de la Manche et de la façade Atlantique. Ces fichiers numériques indiquent les composantes du courant de marée de surface, heure par heure et pour deux coefficients de marée caractéristiques (45 et 95). Le port de référence est le port de Brest. Les points de courant contenus dans les fichiers correspondent aux flèches représentées sur les atlas de courant.

Marnages sur les côtes françaises de La Manche et de l'Atlantique pour le coefficient 95 : marnage de vives-eaux moyennes pour des conditions atmosphériques moyennes.

This study provides an initial global estimate of the extreme water level values along the French metropolitan coastline. These results are to be refined locally with all available data and knowledge. The method used is based on a statistical analysis of the tide gauge observations available in the ports. It does not take into account wave observations. The results between ports are obtained by an interpolation method. The study produces at the reference ports the statistical estimates: - extreme values of high water surge in the Channel and Atlantic; - extreme values of water level for the whole of Metropolitan France. And a set of statistical estimation maps of extreme water level values along the coastline. The estimates provided go up to the 1,000-year return period. In view of the duration of observations used at the ports, the user must check whether estimates with a return period of more than 50 or 100 years are still valid 50 or 100 years still make sense.

This product proposes pre-computed tidal predictions (times and heights of high and low tide with tidal coefficients if available). For ports in mainland France, data are provided in local time, i.e. adjusted for summer and winter time. Tide table data are issued in three formats (PDF, XML and TXT) for publishing and reproduction by printers, associations and advertising agencies. A contract must be signed for this purpose. This product mainly covers French coasts, both in mainland France and for French overseas territories.