Case study:Moreton Channel Gravel Reprofiling

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Location: 50° 42' 27.12" N, 2° 16' 49.41" W

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity
Country	England
Main contact forename	Alasdair
Main contact surname	Maxwell
Main contact user ID
Contact organisation	Environment Agency
Contact organisation web site	http://www.environment-agency.gov.uk
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

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Site

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Name	Moreton Channel
WFD water body codes	GB108044009690
WFD (national) typology	Low, Medium, Calcareous
WFD water body name	Frome Dorset (Lower) & Furzebrook Stream
Pre-project morphology	Very little geomorphological diversity or in channel features.
Reference morphology	Increased channel complexity, supporting greater ecological diversity.
Desired post project morphology
Heavily modified water body	No
National/international site designation
Local/regional site designations
Protected species present	No
Invasive species present	No
Species of interest	Brown trout, salmon, grayling, bullhead, minnow, brook-lamprey & stoneloach
Dominant hydrology
Dominant substrate
River corridor land use	Rural - mixed land use.
Average bankfull channel width category
Average bankfull channel width (m)
Average bankfull channel depth category
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)	500500 m <br />0.5 km <br />50,000 cm <br />
Project started
Works started	2010/09/01
Works completed	2010/09/05
Project completed
Total cost category	1 - 10 k€
Total cost (k€)	72007,200 k€ <br />7,200,000 € <br />
Benefit to cost ratio
Funding sources	Environment Agency and Frome, Piddle and West Dorset Fishery Association

Cost for project phases

Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
Investigation and design
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Reasons for river restoration

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Mitigation of a pressure
Hydromorphology
Biology
Physico-chemical
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Measures

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Planform / Channel pattern
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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	Yes	Yes	No	Yes	No	Improvement
Macrophytes	Yes	Yes	No	Yes	No	Improvement

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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Monitoring documents

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Image gallery

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Additional links and references

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Supplementary Information

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