Case study:Restoration of Wandle Park - Revision history

Hazel Wilson at 09:12, 27 October 2015

2015-10-27T09:12:02Z

← Older revision		Revision as of 09:12, 27 October 2015
Line 60:		Line 60:
	\|Name=Wandle Park		\|Name=Wandle Park
	\|WFD water body code=GB106039023460		\|WFD water body code=GB106039023460
			\|WFD water body name=Wandle (Croydon to Wandsworth) and the R. Gravney
	\|Heavily modified water body=No		\|Heavily modified water body=No
	\|Site designation=Site of Local Importance for Nature Conservation		\|Site designation=Site of Local Importance for Nature Conservation

JoshRRC at 10:38, 1 September 2015

2015-09-01T10:38:34Z

← Older revision		Revision as of 10:38, 1 September 2015
Line 59:		Line 59:
	{{Site		{{Site
	\|Name=Wandle Park		\|Name=Wandle Park
			\|WFD water body code=GB106039023460
	\|Heavily modified water body=No		\|Heavily modified water body=No
	\|Site designation=Site of Local Importance for Nature Conservation		\|Site designation=Site of Local Importance for Nature Conservation

Nick Elbourne at 14:35, 16 July 2015

2015-07-16T14:35:43Z

← Older revision		Revision as of 14:35, 16 July 2015
Line 23:		Line 23:
	The main objectives of the project are as follows: Restore the river corridor through Wandle Park improving the habitat for local wildlife; Provide flood risk benefit for properties downstream to approximately 1 in 50 return period; Providethe local community with an opportunity to enjoy a high-quality environment and encourage people to care for, use, appreciate and enjoy the environment; Improve the water quality in the channel in support of the Water Framework Directive, helping to meet Good Ecological Potential (GEP) in the catchmentand; Provideflood storagethat will contribute to the London Rivers Action Plan.		The main objectives of the project are as follows: Restore the river corridor through Wandle Park improving the habitat for local wildlife; Provide flood risk benefit for properties downstream to approximately 1 in 50 return period; Providethe local community with an opportunity to enjoy a high-quality environment and encourage people to care for, use, appreciate and enjoy the environment; Improve the water quality in the channel in support of the Water Framework Directive, helping to meet Good Ecological Potential (GEP) in the catchmentand; Provideflood storagethat will contribute to the London Rivers Action Plan.

	Update (July 2015) - Highly Commended at Landscape Institute Awards ~~(2015)~~.		Update (July 2015)
			The London Borough of Croydon worked in partnership with Royal HaskoningDHV and LDA Design to oversee the design and implementation of an ambitious scheme to regenerate Wandle Park, improving an important green space into an asset for the local community and contributing towards the delivery of WFD objectives. At the heart of this ambitious £2 million scheme was the restoration of over 250m of the River Wandle, previously culverted below ground, into an open, naturally functioning meandering channel. This project was Highly Commended at the 2015 Landscape Institute Awards.
	\|Lessons learn=This project had a range of key challenges that were overcome through the design process, including:		\|Lessons learn=This project had a range of key challenges that were overcome through the design process, including:
	• The restoration of natural hydromorphological processes whilst minimising the potential for large scale channel migration. This was resolved through the design of a multi-stage channel which allows the low flow channel to adjust within a more permanent high flow bank line. Seeded gravels were also allowed to rework naturally to create a wide range of in-channel habitat niches. The two stage channel safely accommodates both the low dry weather flows and the high flood flows.		• The restoration of natural hydromorphological processes whilst minimising the potential for large scale channel migration. This was resolved through the design of a multi-stage channel which allows the low flow channel to adjust within a more permanent high flow bank line. Seeded gravels were also allowed to rework naturally to create a wide range of in-channel habitat niches. The two stage channel safely accommodates both the low dry weather flows and the high flood flows.
	• Ensuring that the river could be re-meandered through contaminated land at the site without increasing remobilisation of in situ contaminated sediments and leachate. An uncontaminated capping layer using uncontaminated soils was used to protect the environment and park users from contaminated materials.		• Ensuring that the river could be re-meandered through contaminated land at the site without increasing remobilisation of in situ contaminated sediments and leachate. An uncontaminated capping layer using uncontaminated soils was used to protect the environment and park users from contaminated materials.
	• Minimising the need for expensive off-site disposal of contaminated materials and the need to import uncontaminated soils for capping. Soils on the site were categorized as contaminated and less contaminated (i.e. with contaminant concentrations below hazardous levels), and the former were used as a base layer for landscape features within the park. These were capped with less contaminated soils from the site to prevent exposure to the wider environment.		• Minimising the need for expensive off-site disposal of contaminated materials and the need to import uncontaminated soils for capping. Soils on the site were categorized as contaminated and less contaminated (i.e. with contaminant concentrations below hazardous levels), and the former were used as a base layer for landscape features within the park. These were capped with less contaminated soils from the site to prevent exposure to the wider environment.

	}}		}}
	{{Image gallery}}		{{Image gallery}}

Nick Elbourne at 14:33, 16 July 2015

2015-07-16T14:33:43Z

← Older revision		Revision as of 14:33, 16 July 2015
Line 24:		Line 24:

	Update (July 2015) - Highly Commended at Landscape Institute Awards (2015).		Update (July 2015) - Highly Commended at Landscape Institute Awards (2015).
			\|Lessons learn=This project had a range of key challenges that were overcome through the design process, including:
			• The restoration of natural hydromorphological processes whilst minimising the potential for large scale channel migration. This was resolved through the design of a multi-stage channel which allows the low flow channel to adjust within a more permanent high flow bank line. Seeded gravels were also allowed to rework naturally to create a wide range of in-channel habitat niches. The two stage channel safely accommodates both the low dry weather flows and the high flood flows.
			• Ensuring that the river could be re-meandered through contaminated land at the site without increasing remobilisation of in situ contaminated sediments and leachate. An uncontaminated capping layer using uncontaminated soils was used to protect the environment and park users from contaminated materials.
			• Minimising the need for expensive off-site disposal of contaminated materials and the need to import uncontaminated soils for capping. Soils on the site were categorized as contaminated and less contaminated (i.e. with contaminant concentrations below hazardous levels), and the former were used as a base layer for landscape features within the park. These were capped with less contaminated soils from the site to prevent exposure to the wider environment.

	}}		}}
	{{Image gallery}}		{{Image gallery}}

Nick Elbourne at 14:32, 16 July 2015

2015-07-16T14:32:31Z

← Older revision		Revision as of 14:32, 16 July 2015
Line 13:		Line 13:
	\|Contact organisation=Croydon Council		\|Contact organisation=Croydon Council
	\|Contact organisation url=www.croydon.gov.uk/		\|Contact organisation url=www.croydon.gov.uk/
	\|Partner organisations=Royal HaskoningDHV,		\|Partner organisations=Royal HaskoningDHV,
	\|Multi-site=No		\|Multi-site=No
	\|Project picture=WANDLE 1.jpg		\|Project picture=WANDLE 1.jpg
Line 22:		Line 22:
	The London Borough of Croydon in partnership with the Environment Agency is developing a scheme to restore the River Wandle at Wandle Park, Croydon. The London Borough of Croydon believes that the park is presently an underused asset and wishes to restore the park to reflect is original Victorian lay out.		The London Borough of Croydon in partnership with the Environment Agency is developing a scheme to restore the River Wandle at Wandle Park, Croydon. The London Borough of Croydon believes that the park is presently an underused asset and wishes to restore the park to reflect is original Victorian lay out.
	The main objectives of the project are as follows: Restore the river corridor through Wandle Park improving the habitat for local wildlife; Provide flood risk benefit for properties downstream to approximately 1 in 50 return period; Providethe local community with an opportunity to enjoy a high-quality environment and encourage people to care for, use, appreciate and enjoy the environment; Improve the water quality in the channel in support of the Water Framework Directive, helping to meet Good Ecological Potential (GEP) in the catchmentand; Provideflood storagethat will contribute to the London Rivers Action Plan.		The main objectives of the project are as follows: Restore the river corridor through Wandle Park improving the habitat for local wildlife; Provide flood risk benefit for properties downstream to approximately 1 in 50 return period; Providethe local community with an opportunity to enjoy a high-quality environment and encourage people to care for, use, appreciate and enjoy the environment; Improve the water quality in the channel in support of the Water Framework Directive, helping to meet Good Ecological Potential (GEP) in the catchmentand; Provideflood storagethat will contribute to the London Rivers Action Plan.

			Update (July 2015) - Highly Commended at Landscape Institute Awards (2015).
	}}		}}
	{{Image gallery}}		{{Image gallery}}

Nick Elbourne at 14:31, 16 July 2015

2015-07-16T14:31:51Z

← Older revision		Revision as of 14:31, 16 July 2015
Line 76:		Line 76:
	{{Additional Documents end}}		{{Additional Documents end}}
	{{Additional links and references header}}		{{Additional links and references header}}
			{{Additional links and references
			\|Link=www.therrc.co.uk/sites/default/files/files/Conference/2015/Outputs/presentations/6.1.3_ian_dennis.pdf
			\|Description=Restoring Wandle Park - RRC Conference 2015 Presentation
			}}
	{{Additional links and references footer}}		{{Additional links and references footer}}
	{{Supplementary Information}}		{{Supplementary Information}}
	{{Toggle content end}}		{{Toggle content end}}

Nick Elbourne at 14:28, 16 July 2015

2015-07-16T14:28:02Z

← Older revision		Revision as of 14:28, 16 July 2015
Line 59:		Line 59:
	{{Project background		{{Project background
	\|Project started=2009/01/01		\|Project started=2009/01/01
			\|Project completed=2013/12/31
	}}		}}
	{{Motivations}}		{{Motivations}}

Nick Elbourne at 14:27, 16 July 2015

2015-07-16T14:27:19Z

← Older revision		Revision as of 14:27, 16 July 2015
Line 57:		Line 57:
	\|Invasive species present=No		\|Invasive species present=No
	}}		}}
	{{Project background}}		{{Project background
			\|Project started=2009/01/01
			}}
	{{Motivations}}		{{Motivations}}
	{{Measures}}		{{Measures}}

Nick Elbourne at 14:25, 16 July 2015

2015-07-16T14:25:34Z

@@ Line 27: / Line 27: @@
 |File name=During works.jpg
 |Caption=During works
 }}
 {{Image gallery end}}

Nick Elbourne at 14:14, 16 July 2015

2015-07-16T14:14:02Z

← Older revision		Revision as of 14:14, 16 July 2015
Line 13:		Line 13:
	\|Contact organisation=Croydon Council		\|Contact organisation=Croydon Council
	\|Contact organisation url=www.croydon.gov.uk/		\|Contact organisation url=www.croydon.gov.uk/
			\|Partner organisations=Royal HaskoningDHV,
	\|Multi-site=No		\|Multi-site=No
	\|Project picture=WANDLE 1.jpg		\|Project picture=WANDLE 1.jpg