Case study:Castle Acre Rehabilitation Project - Revision history

Alexrrc at 12:53, 1 November 2018

2018-11-01T12:53:43Z

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	\|Works started=2011/03/01		\|Works started=2011/03/01
	\|Works completed=2011/03/31		\|Works completed=2011/03/31
	\|Funding sources=Environment ~~AgencyNorfolk~~ Rivers Internal Drainage Board		\|Funding sources=Environment Agency, Norfolk Rivers Internal Drainage Board
	}}		}}
	{{Motivations		{{Motivations

Alexrrc at 12:53, 1 November 2018

2018-11-01T12:53:38Z

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	\|Works started=2011/03/01		\|Works started=2011/03/01
	\|Works completed=2011/03/31		\|Works completed=2011/03/31
	\|Funding sources=Environment ~~Agency/Norfolk~~ Rivers Internal Drainage Board		\|Funding sources=Environment AgencyNorfolk Rivers Internal Drainage Board
	}}		}}
	{{Motivations		{{Motivations

Hazel Wilson at 14:34, 23 October 2015

2015-10-23T14:34:08Z

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	\|Name=Castle Acre		\|Name=Castle Acre
	\|WFD water body code=GB105033047791		\|WFD water body code=GB105033047791
			\|WFD water body name=Nar to confl with Blackborough Drain
	\|Pre-project morphology=Single channel, Impounded, Straightened		\|Pre-project morphology=Single channel, Impounded, Straightened
	\|Reference morphology=Single channel, Pool-riffle, Sinuous		\|Reference morphology=Single channel, Pool-riffle, Sinuous

JoshRRC at 15:01, 27 August 2015

2015-08-27T15:01:32Z

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	{{Site		{{Site
	\|Name=Castle Acre		\|Name=Castle Acre
			\|WFD water body code=GB105033047791
	\|Pre-project morphology=Single channel, Impounded, Straightened		\|Pre-project morphology=Single channel, Impounded, Straightened
	\|Reference morphology=Single channel, Pool-riffle, Sinuous		\|Reference morphology=Single channel, Pool-riffle, Sinuous

NickRRC at 13:53, 18 October 2013

2013-10-18T13:53:37Z

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	{{Toggle content start}}		{{Toggle content start}}
	{{Case study subcatchment		{{Case study subcatchment
	\|Subcatchment=Nar		\|Subcatchment=Nar to confl with Blackborough Drain
	}}		}}
	{{Site		{{Site

Admin at 08:36, 6 September 2013

2013-09-06T08:36:01Z

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	The key to being able to carry out the works as desired was the presence of large patches of sedge (Carex acutiformis) and reed (Phalaris arundinacea). In several places the river was narrowed by over 4m simply by transferring large ‘sods’ of sedges; these imports were placed within the inside the existing bank, and will now form the new bank. In the upstream straight section to the first bend, three pools and upstream deflectors were created. As the bed of the newly created two downstream pools of this sequence (photos 2-5) had flinty-gravel present, this was sprinkled on the bed of the narrowed channel upstream to accentuate the improved speed of flow into the pools, and improve the habitat variability within the reach. Material dug from pools to form the upstream shoulders that narrowed the channel were blinded by sedge/reed from the adjacent field. These features were enlarged by further sedge/reed sods.		The key to being able to carry out the works as desired was the presence of large patches of sedge (Carex acutiformis) and reed (Phalaris arundinacea). In several places the river was narrowed by over 4m simply by transferring large ‘sods’ of sedges; these imports were placed within the inside the existing bank, and will now form the new bank. In the upstream straight section to the first bend, three pools and upstream deflectors were created. As the bed of the newly created two downstream pools of this sequence (photos 2-5) had flinty-gravel present, this was sprinkled on the bed of the narrowed channel upstream to accentuate the improved speed of flow into the pools, and improve the habitat variability within the reach. Material dug from pools to form the upstream shoulders that narrowed the channel were blinded by sedge/reed from the adjacent field. These features were enlarged by further sedge/reed sods.
	}}		}}
			{{Image gallery}}
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	{{Case study subcatchment		{{Case study subcatchment
	\|Subcatchment=Nar		\|Subcatchment=Nar
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	{{Monitoring documents}}		{{Monitoring documents}}
	{{Monitoring documents end}}		{{Monitoring documents end}}
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	{{Additional Documents}}		{{Additional Documents}}
	{{Case study documents		{{Case study documents
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	{{Additional links and references footer}}		{{Additional links and references footer}}
	{{Supplementary Information}}		{{Supplementary Information}}
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Ascarr at 13:35, 17 May 2013

2013-05-17T13:35:54Z

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	\|Contact organisation=River Restoration Centre		\|Contact organisation=River Restoration Centre
	\|Contact organisation url=www.therrc.co.uk		\|Contact organisation url=www.therrc.co.uk
	\|Partner organisations=Environment Agency, River Restoration Centre,		\|Partner organisations=Environment Agency, River Restoration Centre, Natural England,
	\|Multi-site=No		\|Multi-site=Yes
	\|Project picture=NarCastleAcre.JPG		\|Project picture=NarCastleAcre.JPG
	\|Picture description=River Nar SSSI at Castle Acre		\|Picture description=River Nar SSSI at Castle Acre

Ascarr at 13:21, 17 May 2013

2013-05-17T13:21:16Z

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	{{Image gallery end}}		{{Image gallery end}}
	{{Additional Documents}}		{{Additional Documents}}
			{{Case study documents
			\|File name=NAR Spring 2011 - as built project report.pdf
			\|Description=River Nar Rehabilitation summary report by Nigel Holmes
			}}
	{{Additional Documents end}}		{{Additional Documents end}}
	{{Additional links and references header}}		{{Additional links and references header}}
	{{Additional links and references footer}}		{{Additional links and references footer}}
	{{Supplementary Information}}		{{Supplementary Information}}

NickRRC at 09:17, 10 May 2013

2013-05-10T09:17:35Z

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	{{Case study status		{{Case study status
	\|Approval status=~~Draft~~		\|Approval status=Approved
	}}		}}
	{{Location		{{Location

NickRRC at 09:17, 10 May 2013

2013-05-10T09:17:17Z

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	}}		}}
	{{Measures		{{Measures
	\|Planform / Channel pattern=Channel narrowing,		\|Bank and bed modifications measure=Creation of pools and riffles,
			\|Planform / Channel pattern=Channel narrowing,
	}}		}}
	{{Hydromorphological quality elements header}}		{{Hydromorphological quality elements header}}