Case study:River Tat Restoration Scheme - Revision history

Alexrrc at 12:14, 31 May 2017

2017-05-31T12:14:33Z

← Older revision		Revision as of 12:14, 31 May 2017
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	}}		}}
	{{Measures		{{Measures
	\|Bank and bed modifications measure=Cleaning of spawning gravels, Creation of pools and riffles,		\|Bank and bed modifications measure=Cleaning of spawning gravels, Creation of pools and riffles,
	\|Floodplain / River corridor=Installing riverside fencing,		\|Floodplain / River corridor=Installing riverside fencing,
	\|Planform / Channel pattern=Introducing large woody debris, ~~Introduction~~ of ~~LWD~~ deflectors,		\|Planform / Channel pattern=Introducing large woody debris, Creation of wooden deflectors,
	}}		}}
	{{Hydromorphological quality elements header}}		{{Hydromorphological quality elements header}}

Hazel Wilson at 09:43, 27 October 2015

2015-10-27T09:43:41Z

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	{{Site		{{Site
	\|WFD water body code=GB105034051140		\|WFD water body code=GB105034051140
			\|WFD water body name=Tat
	\|Heavily modified water body=No		\|Heavily modified water body=No
	\|Protected species present=No		\|Protected species present=No

JoshRRC at 13:36, 1 September 2015

2015-09-01T13:36:12Z

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	\|Subcatchment=Tat		\|Subcatchment=Tat
	}}		}}
	{{Site}}		{{Site
			\|WFD water body code=GB105034051140
			\|Heavily modified water body=No
			\|Protected species present=No
			\|Invasive species present=No
			}}
	{{Project background		{{Project background
	\|Project started=2013/05/01		\|Project started=2013/05/01

JoshRRC at 14:22, 13 October 2014

2014-10-13T14:22:23Z

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

JoshRRC at 14:21, 13 October 2014

2014-10-13T14:21:47Z

← Older revision		Revision as of 14:21, 13 October 2014
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	\|Biological quality elements=Improving SSSI site, Fish: Abundance,		\|Biological quality elements=Improving SSSI site, Fish: Abundance,
	}}		}}
	{{Measures}}		{{Measures
			\|Bank and bed modifications measure=Cleaning of spawning gravels, Creation of pools and riffles,
			\|Floodplain / River corridor=Installing riverside fencing,
			\|Planform / Channel pattern=Introducing large woody debris, Introduction of LWD deflectors,
			}}
	{{Hydromorphological quality elements header}}		{{Hydromorphological quality elements header}}
	{{End table}}		{{End table}}

JoshRRC at 14:20, 13 October 2014

2014-10-13T14:20:41Z

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	\|Project completed=2014/07/01		\|Project completed=2014/07/01
	}}		}}
	{{Motivations}}		{{Motivations
			\|Biological quality elements=Improving SSSI site, Fish: Abundance,
			}}
	{{Measures}}		{{Measures}}
	{{Hydromorphological quality elements header}}		{{Hydromorphological quality elements header}}

JoshRRC at 14:19, 13 October 2014

2014-10-13T14:19:46Z

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	{{Site}}		{{Site}}
	{{Project background}}		{{Project background
			\|Project started=2013/05/01
			\|Project completed=2014/07/01
			}}
	{{Motivations}}		{{Motivations}}
	{{Measures}}		{{Measures}}

NickRRC at 13:58, 14 May 2014

2014-05-14T13:58:38Z

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	{{Toggle button}}		{{Toggle button}}
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	{{Case study subcatchment}}		{{Case study subcatchment
			\|Subcatchment=Tat
			}}
	{{Site}}		{{Site}}
	{{Project background}}		{{Project background}}

Rdryden at 12:35, 23 March 2014

2014-03-23T12:35:53Z

← Older revision		Revision as of 12:35, 23 March 2014
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	}}		}}
	{{Project overview		{{Project overview
	~~\|Project title=River Tat Restoration Scheme~~
	\|Status=Complete		\|Status=Complete
	\|Themes=Fisheries, Flood risk management, Habitat and biodiversity, Hydromorphology, Land use management - agriculture, Monitoring		\|Themes=Fisheries, Flood risk management, Habitat and biodiversity, Hydromorphology, Land use management - agriculture, Monitoring
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	\|Contact organisation=Environment Agency		\|Contact organisation=Environment Agency
	\|Contact organisation url=www.environment-agency.gov.uk/		\|Contact organisation url=www.environment-agency.gov.uk/
			\|Partner organisations=Water Management Alliance, Natural England, Atkins, Pynkney Hall Estate
			\|Name of parent multi-site project=Case_study:Wensum River Restoration Strategy
	\|Multi-site=No		\|Multi-site=No
	\|~~Name~~ of ~~parent multi-site project~~=~~Case_study:~~Wensum River ~~Restoration Strategy~~		\|Project picture=Restored section of River Tat.jpg
			\|Picture description=Restored section of River Tat, March 2014
			\|Project summary=The River Tat is a tributary of the River Wensum and forms part of the River Wensum Site of Special Scientific Interest. The planform and channel geometry has historically been subjected to significant modification including diversions, straightening, widening and the construction of an online lake system. The aim of the restoration work was to ‘kick start’ natural morphological processes throughout the reach.

			A design report was written for the site which outlined the range of restoration measures that could be used. However, the design was extremely flexible and the location of different features was determined by a combination of expert judgement and working with existing channel features. On the ground works were delivered by an experienced Environment Agency Field Services team who have become skilled at delivering this type of restoration work.

			In locations where a gravel bed was present, albeit beneath a layer of sand/silt because of the homogeneous character of the water course, gravel glides have been restored by re-distributing the bed material to form glide-pool sequences. The water velocity has been increased by narrowing the channel, using features such as earth berms and woody debris, resulting in a clean gravel bed. Deep pools have been dug to introduce variations in bed levels, providing flow diversity and creating resting areas for fish.

			A key restoration measure has been the installation of Large Woody Debris (LWD). Reducing tree cover in heavily shaded areas, by selective coppicing, provides a sustainable source of material. This also allows light onto the river, promoting marginal vegetation to establish. LWD has introduced flow diversity, helping keep the gravels free from silt and providing overhead cover for fish.
	}}		}}
	{{Image gallery}}		{{Image gallery}}

Rdryden: Created page with "{{Case study status |Approval status=Draft }} {{Location |Location=52.81775500027231, 0.7574558258056641 }} {{Project overview |Project title=River Tat Restoration Scheme |Sta..."

2014-03-23T12:22:55Z

Created page with "{{Case study status |Approval status=Draft }} {{Location |Location=52.81775500027231, 0.7574558258056641 }} {{Project overview |Project title=River Tat Restoration Scheme |Sta..."

New page

{{Case study status
|Approval status=Draft
}}
{{Location
|Location=52.81775500027231, 0.7574558258056641
}}
{{Project overview
|Project title=River Tat Restoration Scheme
|Status=Complete
|Themes=Fisheries, Flood risk management, Habitat and biodiversity, Hydromorphology, Land use management - agriculture, Monitoring
|Country=England
|Main contact forename=Adam
|Main contact surname=Thurtle
|Contact organisation=Environment Agency
|Contact organisation url=www.environment-agency.gov.uk/
|Multi-site=No
|Name of parent multi-site project=Case_study:Wensum River Restoration Strategy
}}
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{{Site}}
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{{Motivations}}
{{Measures}}
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{{Monitoring documents}}
{{Monitoring documents end}}
{{Additional Documents}}
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{{Supplementary Information}}
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