All the swells at Portsea!
The tide is certainly rising, especially in the South of the Bay, but it is really the marked increase in the swell – surge of water through The Heads – which has increased so dramatically since dredging at the Entrance.
As Port Phillip Baykeeper reports below, the tide is certainly rising, especially in the South of the Bay.
Several centimetres increase in tide height will do damage for sure, but it is sometimes metres of swell, pounding on the beach through all of the high cycle of the tide every day that has caused most damage to Portsea beach since dredging.
Dune in front of Portsea pub continues its dramatic slump
28th May 2010
Port Phillip Baykeeper
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‘average tide’ hides local reality Posted: The fact that the tidal range at ‘the Entrance’ is around twice that at Port Melbourne highlights the fact that there are very different tidal zones in the Bay. Incoming tides are impeded by the Bay’s narrow Entrance, and then by ‘the Sands’, the vast triangular area of shallow sand flats which are a barrier [...]
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