Mean Spring Tidal Range (m)

This map layer has been supplied directly by Marine Scotland National Marine Plan interactive. You can obtain additional information about the layer on this page

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Tidal range is generally between 4 and 5 m; highest tidal ranges are found in the inner Solway Firth where the mean spring tidal range can be between 7 and 8 m. Tidal range is at a minimum in areas known as amphidromic points. One of these points occurs in Scottish waters between Islay and the Mull of Kintrye; another amphidromic point can be found in the north east of the North Sea. Tidal range decreases with distance offshore from the North East coast.

Data source for NMPi Mean Spring Tidal Range layer: Atlas of UK Marine Renewable Energy Resources (see


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All copies of the Met Office and Proudman Oceanographic Laboratory Data in whatever from must contain the following acknowledgement: '© Crown Copyright. All rights reserved 2008.'.