Case study:River Glaven conservation group

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Location: 52° 54' 6.53" N, 1° 3' 39.83" E

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Project overview

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Status	Complete
Project web site
Themes	Economic aspects, Land use management - fisheries"Land use management - fisheries" is not in the list (Economic aspects, Environmental flows and water resources, Fisheries, Flood risk management, Habitat and biodiversity, Hydropower, Hydromorphology, Land use management - agriculture, Land use management - forestry, Monitoring, ...) of allowed values for the "Theme" property., Monitoring, Spatial planning
Country	England
Main contact forename	Nick
Main contact surname	Elbourne
Main contact user ID	User:NickRRC
Contact organisation	River Restoration Centre
Contact organisation web site	http://www.therrc.co.uk
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

River narrowing using locally coppiced hazel trees

Project summary

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The objectives of the project were to improve the in-river habitat upstream from Letheringsett Ford, to re-connect the river and floodplain and to develop an experience base which would serve the River Glaven Conservation Group (RGCG) well on other projects.

Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

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(affects all case studies in this subcatchment)

Catchment

River basin district	Anglian
River basin	North Norfolk

Subcatchment

River name	Glaven
Area category	10 - 100 km²
Area (km2)
Maximum altitude category	100 - 200 m
Maximum altitude (m)	103103 m <br />0.103 km <br />10,300 cm <br />
Dominant geology	Calcareous
Ecoregion	Great Britain
Dominant land cover	Arable and Horticulture
Waterbody ID	GB105034055780

Other case studies in this subcatchment: Nine Chalk Rivers Project - Glaven Catchment, River Restoration at Hunworth (River Glaven)

Site

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Name	Glaven
WFD water body codes	GB105034055780
WFD (national) typology
WFD water body name	Glaven
Pre-project morphology	Single channel, High width:depth
Reference morphology	Single channel, Sinuous, Pool-riffle
Desired post project morphology
Heavily modified water body	Yes
National/international site designation
Local/regional site designations
Protected species present	No
Invasive species present	No
Species of interest
Dominant hydrology	Quick run-off
Dominant substrate	Gravel, Bedrock, Cobble
River corridor land use	Extensive agriculture, Woodland, Grassland
Average bankfull channel width category	10 - 50 m
Average bankfull channel width (m)
Average bankfull channel depth category	0.5 - 2 m
Average bankfull channel depth (m)
Mean discharge category
Mean annual discharge (m3/s)
Average channel gradient category
Average channel gradient
Average unit stream power (W/m2)

Project background

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Reach length directly affected (m)	400 m0.4 km <br />40,000 cm <br />
Project started	2003/01/01
Works started	2006/01/01
Works completed	2006/01/01
Project completed
Total cost category	1 - 10 k€
Total cost (k€)	8 k€8,000 € <br />
Benefit to cost ratio
Funding sources	Wild Trout Trust, Environment Agency

Cost for project phases

Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
Investigation and design			Environment Agency
Stakeholder engagement and communication			Environment Agency
Works and works supervision			Environment Agency
Post-project management and maintenance			Environment Agency
Monitoring			Environment Agency

Supplementary funding information

Funding also provided by the Cinderella Chalk Rivers Project

Reasons for river restoration

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Mitigation of a pressure
Hydromorphology	Channel pattern/planform, Continuity of sediment transport
Biology	Fish: Abundance
Physico-chemical
Other reasons for the project	Landscape enhancement, Fisheries

Measures

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Structural measures
Bank/bed modifications	Re-profiling, Gravel placement, Placement of LWD
Floodplain / River corridor	Re-connection with wider floodplain
Planform / Channel pattern	Channel narrowing, Creation of braided channel
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other

Monitoring

Hydromorphological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Biological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative
Fish: Abundance		Yes	Yes			Awaiting results

Physico-chemical quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Any other monitoring, e.g. social, economic

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Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Monitoring documents

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Image gallery

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Additional documents and videos

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Additional links and references

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Link	Description
http://therrc.co.uk/case studies/cinderella%20chalk%20rivers.pdf	Cinderella Chalk Rivers overview
http://therrc.co.uk/case studies/rgcg%20report.pdf	RGCG in-river habitat improvement 2006 Report
http://therrc.co.uk/case studies/wtt%20award%20winner.pdf	The Glaven Project wins the annual Wild Trout Trust and Orvis Conservation Awards 2007 Professional Category
http://therrc.co.uk/case studies/glaven%20restoration%20project.pdf	The River Restoration Centre Case Study Series - Summary of River Glaven Restoration Project

Supplementary Information

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The project was named as the winner of the Professional Category at the 2007 Wild Trout Trust and Orvis Conservation Awards, reinforcing it's position as a good example of a successful river restoration project.