Case study:Tanners Brook

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Location: 50° 56' 43", -1° 24' 51"
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Project overview

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Status Complete
Project web site http://www.ecrr.org/Portals/27/Tanners%20Brook,%20Southampton.pdf
Themes Flood risk management, Habitat and biodiversity, Social benefits
Country England
Main contact forename Josh
Main contact surname Peacock
Main contact user ID
Contact organisation Environment Agency
Contact organisation web site
Partner organisations Southampton Council, Arup, Southampton Golf Club
Parent multi-site project
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encompassing the following
projects
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Project summary

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Holly Brook is a tributary of Tanner’s Brook, a heavily urbanised watercourse which flows through Millbrook and into Southampton Water. Both watercourses are heavily modified in their lower reaches due to urban development and are subject to fluvial flooding at various locations. The Holly Brook channel has been straightened and culverted in some sections. Flow in the Holly Brook is predominantly uniform glides with a meandering planform and localised riffles and pools – overall it has limited geomorphological diversity. Further downstream it is constrained by urban development. In Southampton Golf Club the channel had been culverted, resulting in poor drainage. The 27 hole golf course is characterised by a highly managed undulating landscape with frequent copses of mature trees throughout the course. Holly Brook is currently culverted through the middle of the course, with the exception of a short stretch through a large woodland copse in the very centre of the course (designated as a Site of Importance for Nature Conservation). To the north of the golf course, the brook flows naturally through a mature woodland copse. To the south, the brook is culverted underneath Southampton Sports Centre.

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Catchment and subcatchment

Catchment

River basin district South East
River basin Test and Itchen

Subcatchment

River name Tanner's Brook
Area category 10 - 100 km²
Area (km2)
Maximum altitude category Less than 100 m
Maximum altitude (m) 98
98 m
0.098 km
9,800 cm
Dominant geology Siliceous
Ecoregion Great Britain
Dominant land cover Suburban
Waterbody ID GB107042016620



Site

Name
WFD water body codes GB107042016620
WFD (national) typology
WFD water body name Tanner's Brook
Pre-project morphology
Reference morphology
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
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Project background

Reach length directly affected (m)
Project started 2012/01/01
Works started
Works completed
Project completed 2013/01/01
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Reasons for river restoration

Mitigation of a pressure Urbanisation
Hydromorphology
Biology
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Measures

Structural measures
Bank/bed modifications
Floodplain / River corridor
Planform / Channel pattern Deculverting
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other


Monitoring

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Supplementary Information

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