Water is constantly in motion — driven by the tides along the coasts of northwestern Europe, or as rainfall, river flow and groundwater inland. Tidal patterns, ebb and flood, reference datums, and long climate and groundwater series: I connect measurements, physics and data analysis so the dynamics of our water systems become something you can picture and grasp.
Explore tidal dynamics and live water levels across the North Sea, the Channel, and parts of the Atlantic — in real time.
Launch map
Summer 2026 on the Loire, not far from Orléans: parched meadows, wilted leaves, little water in the river. Precipitation, temperature and groundwater at Trancrainville over 61 years.
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Real-time gauge stations across Northwestern Europe — North Sea, Channel, and adjacent Atlantic coasts — in one interactive view. Built for clarity when tides matter.
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A short escape into practice, where people live with the tides. A guided walk into the Baie de Somme: estuary morphodynamics, salt-marsh flora, bird habitat, and shore defense — plus Le Crotoy’s historic flushing basin that keeps the harbour navigable.
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Gauges turn the motion of the water into a clear picture of sea level over time. At the seam between land and sea they are the indispensable basis for storm-surge warnings, safe navigation in fairways and estuaries, understanding morphodynamic change, and long-term research into sea-level change.
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On the scale where the Sun is an apple, Earth is a grain of sand that orbits that apple at a distance of 8.5 m and is pulled toward it. Gravitational attraction and inertia are what make ebb and flood possible. Why tides nevertheless look different around the world has other causes as well.
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