Latest tidal level information for:
the Tide at Medmerry

2:31pm Wednesday 16 August 2017

Unavailable

This station is temporarily closed and we are working to get the station back online.

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Key information

• Station name: Medmerry
• Station ID: 1025
• Estuary/harbour: Tide
• Highest astronomical tide prediction: 2.80mAOD
• Site datum: 0.00mAOD (what does this mean?)

How are tide levels in coastal and estuary areas measured?

Tide levels in coastal and estuary areas are shown in metres above mean sea level, or ordnance datum (mAOD).

Monitoring stations in these locations do have their own datum - a height in metres fixed relative to mean sea level. But, because of their location, these stations usually have the same datum as actual mean sea level. So it's expressed as zero metres.

How often are river and sea levels measured?

The data we collect is fed into this service once or twice a day under typical conditions. We increase this frequency whenever there's a greater risk of flooding.

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