Case study:Pevensey Sea Defences - Revision history

Alexrrc at 16:03, 8 November 2018

2018-11-08T16:03:15Z

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Alexrrc at 16:03, 8 November 2018

2018-11-08T16:03:04Z

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	\|Specific mitigation=Flood and coastal erosion protection,		\|Specific mitigation=Flood and coastal erosion protection,
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	{{Measures}}		{{Measures
			\|Other technical measure=Beach nourishment
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	{{Hydromorphological quality elements header}}		{{Hydromorphological quality elements header}}
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Alexrrc at 16:02, 8 November 2018

2018-11-08T16:02:44Z

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	\|Funding sources=Public-private partnership, Partnership contributions,		\|Funding sources=Public-private partnership, Partnership contributions,
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			\|Specific mitigation=Flood and coastal erosion protection,
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	{{Measures}}		{{Measures}}
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Alexrrc at 16:02, 8 November 2018

2018-11-08T16:02:31Z

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	{{Project background}}		{{Project background
			\|Project started=2000
			\|Total1 cost=£1m
			\|Funding sources=Public-private partnership, Partnership contributions,
			}}
	{{Motivations}}		{{Motivations}}
	{{Measures}}		{{Measures}}

Alexrrc at 16:01, 8 November 2018

2018-11-08T16:01:45Z

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	{{Project overview		{{Project overview
	~~\|Project title=Pevensey Sea Defences~~
	\|Status=Complete		\|Status=Complete
			\|Project web site url=www.therrc.co.uk/sites/default/files/projects/61_pevensey.pdf
	\|Themes=Economic aspects, Flood risk management, Social benefits		\|Themes=Economic aspects, Flood risk management, Social benefits
	\|Country=England		\|Country=England
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	\|Contact organisation=Pevensey Coastal Defence Ltd		\|Contact organisation=Pevensey Coastal Defence Ltd
	\|Contact organisation url=pevensey-bay.co.uk		\|Contact organisation url=pevensey-bay.co.uk
			\|Partner organisations=Environment Agency, Boskalis Westminster Ltd, Balfour Beatty, Mackley
	\|Multi-site=No		\|Multi-site=No
			\|Project picture=61 Pevensey Sea Defences.png
			\|Project summary=The sea defences at Pevensey Bay in East Sussex (Map 1) are managed by Pevensey Coastal Defence Ltd (PCD) under a 25 year (2000 to 2025) public–private partnership (PPP) contract. The scheme is funded day to day by PCD. However, the contract is flexible enough to accommodate change. The sediment deficit of 30,000m3 on the Pevensey frontage is replenished in 2 ways:
			• Recharge from offshore – as dredged material from Owers Bank (near Littlehampton) is rainbowed onto the beach at the western end of the frontage.
			• Bypassing of material accumulated against the southern harbour arm around Sovereign Harbour (Photo 1) by road lorries – some 4,000–25,000m3 are moved per year with an annual average in recent years of 9,000m3. Under the PPP contract, PCD expects to receive 5,000m3 of material and pays for any over this amount.
			In addition:
			• Dredged material from the navigation channel adjacent to the harbour entrance is deposited below low water springs (this material is finer than material taken from the beach). This dredging is done by harbour owners, Premier Marinas, and not by PCD. PCD works with Premier Marinas to try and ensure suitable sediments are beneficially reused. About 40,000m3 have been reused in the last 2 years rather than being dumped at sea.
			• Recycling from the eastern end of the frontage westwards – this is done piecemeal, moving material various distances but rarely the full length of the frontage. Recycling volumes average about 100,000m3 annually.

			Other flood risk management measures carried out by PCD on the frontage are beach profiling, constructing/maintaining retaining walls to hold beach material in place and maintaining around 7 groynes. The remaining 150 groynes on the frontage are not being maintained and had already deteriorated to a poor standard before the project started.
			The hybrid scheme improves responsiveness, flexibility and sustainability. The South West Beach at Sovereign Harbour is a highly volatile section of coast and sediment can build up to a point where it should be removed in days. PCD is best placed to initiate bypassing works at short notice. Bypassed material is only available between October and March, when dredgers generally find conditions are too rough for them to operate. Recharge and bypassing both represent Working with Natural Processes (WWNP).
			\|Project title=Pevensey Sea Defences
	}}		}}
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Alexrrc: Created page with "{{Case study status |Approval status=Draft }} {{Location |Location=50.8038579, -0.4901945000000296 }} {{Project overview |Project title=Pevensey Sea Defences |Status=Complete..."

2018-11-08T16:00:23Z

Created page with "{{Case study status |Approval status=Draft }} {{Location |Location=50.8038579, -0.4901945000000296 }} {{Project overview |Project title=Pevensey Sea Defences |Status=Complete..."

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{{Case study status
|Approval status=Draft
}}
{{Location
|Location=50.8038579, -0.4901945000000296
}}
{{Project overview
|Project title=Pevensey Sea Defences
|Status=Complete
|Themes=Economic aspects, Flood risk management, Social benefits
|Country=England
|Main contact forename=Ian
|Main contact surname=Thomas
|Contact organisation=Pevensey Coastal Defence Ltd
|Contact organisation url=pevensey-bay.co.uk
|Multi-site=No
}}
{{Image gallery}}
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{{Site}}
{{Project background}}
{{Motivations}}
{{Measures}}
{{Hydromorphological quality elements header}}
{{End table}}
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{{Monitoring documents}}
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{{Additional Documents}}
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{{Supplementary Information}}
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