Portishead put-in
A slipway on the open Severn Estuary shore at Portishead, on North Somerset Council's public foreshore east of the marina and close to Battery Point.
The Severn Estuary is a funnel-shaped tidal system with one of the largest tidal ranges in the world, with a mean spring range of around 12.3 metres and a mean neap range of about 6.5 metres. This floods and drains a very wide intertidal zone of mud, sand and rock, and strong tidal flows keep an estimated 10 million tonnes of sediment in suspension, giving the water its characteristic brown colour.
Downstream of the launch, the shore runs past Battery Point, Woodhill Bay, Kilkenny Bay and Sugar Loaf Beach toward Black Nore lighthouse and Clevedon. Battery Point itself is noted locally as the point on the UK mainland where the largest ships pass closest to shore, and carries its own navigational light. Below the surface, the estuary here supports reefs of the honeycomb tubeworm Sabellaria alveolata, and the mudflats hold internationally important numbers of wintering waders, including curlew, redshank, dunlin and black-tailed godwit.
Nearby
Chain coffee shop in the marina's Sixty8 development on Newfoundland Way, reached via the marina lock gates.
Independent coffee shop in the marina's Sixty8 development on Newfoundland Way, reached via the marina lock gates.
WebsiteConditions to check
Spring tidal streams here run to around 1.5 m/s, dropping to about 0.75 m/s at neaps.
SourceA local tidal eddy sets west towards Portishead pier head during most of the flood tide.
SourceThe upper shore is sandstone and mudstone shingle, giving way to thick mud lower down.
SourceThe shore close to The Rhyne outfall is sticky river mud, which bears on getting back to the slipway as the tide falls.
SourceThis reach carries commercial shipping between Avonmouth and Royal Portbury Docks, plus marina lock traffic close by.
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