Case study:New Forest LIFE project

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Location: 50° 52' 20.52" N, 1° 37' 32.71" W

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity, Hydromorphology, Land use management - forestry, Monitoring
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	Forestry Comission
This is a parent project encompassing the following projects	Highland Water at Warwickslade Lawn, Holmsley Inclosure Stream Restoration, Markway Stream Restoration

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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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Catchment

River basin district	South East
River basin	New Forest

Subcatchment

River name	Black Water
Area category	10 - 100 km²
Area (km2)
Maximum altitude category	100 - 200 m
Maximum altitude (m)	119119 m <br />0.119 km <br />11,900 cm <br />
Dominant geology	Siliceous
Ecoregion	Great Britain
Dominant land cover	Broadleaved Woodland
Waterbody ID	GB107042016710

Site

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Name	Highland Water/Blackwater
WFD water body codes	GB107042016720
WFD (national) typology	Low, Small, Siliceous
WFD water body name	Highland Water
Pre-project morphology	Straight
Reference morphology	Sinuous, Pool-riffle
Desired post project morphology
Heavily modified water body	Yes
National/international site designation	EU - Special Area of Conservation
Local/regional site designations	SSSI (Site of Special Scientific Interest)
Protected species present	No
Invasive species present	No
Species of interest
Dominant hydrology	Quick run-off
Dominant substrate	Barton clays and plateau gravels.
River corridor land use	Plantation forestry, Woodland
Average bankfull channel width category	2 - 5 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	0.0066
Average unit stream power (W/m2)

Project background

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Reach length directly affected (m)	3000 m3 km <br />300,000 cm <br />
Project started	2003/06/01
Works started	2005/06/01
Works completed	2006/08/01
Project completed
Total cost category
Total cost (k€)
Benefit to cost ratio
Funding sources

Cost for project phases

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

Reasons for river restoration

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Mitigation of a pressure	Flood defence
Hydromorphology	Width & depth variation, Flow velocities, Channel pattern/planform
Biology
Physico-chemical
Other reasons for the project	Bank erosion, Landscape enhancement

Measures

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Structural measures
Bank/bed modifications	Introduction of LWD to increase flow resistance - increasing frequency/magnitude of overbank flow, delaying flood peaks for flood mitigation and creating habitat for aquatic organisms. Bed-level raising with gravel addition.
Floodplain / River corridor
Planform / Channel pattern	Re-meandering of channel to increase capacity.
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
Width & depth variation	Yes	Yes	Yes			Improvement
Flow velocities	Yes	Yes	Yes			Improvement

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

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

Supplementary Information

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