Case study:Bleinheim Palace Project: Difference between revisions

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{{Case_study_status
{{Case study status
|Approval status=
|Approval status=Approved
   
 
 
   
      Draft
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{{Location
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|Country=England
|Country=England
|Main contact forename=Nick
|Main contact forename=Nick
|Main contact surname=Elbourne
|Main contact surname=Haycock
|Main contact id=NickRRC
|Contact organisation=Haycock Environmental Consultants
|Contact organisation=River Restoration Centre
|Partner organisations=Amenity Water,
|Partner organisations=Amenity Water,  
|Multi-site=No
|Multi-site=No
|Project picture=P1375.JPG
|Project picture=P1375.JPG
|Picture description=River Evenlode, post restoration
|Picture description=River Evenlode, post restoration
|Project summary=Due to their loss of spawning and nursery sites, rheophilic fish populations (especially barbel, chub and dace) the river Evenlode faced significant recruitment problems. These problems originate in the widening and dredging of the channel leaving it over-sized, with few features to provide habitat or refuge for juvenile fish. With local angling club membership dwindling, the project aimed to increase fish populations in the river through the introduction of a more diverse flow and the allowance of more frequent flooding.
|Project summary=Due to their loss of spawning and nursery sites, rheophilic fish populations (especially barbel, chub and dace) the river Evenlode faced significant recruitment problems. These problems originate in the widening and dredging of the channel leaving it over-sized, with few features to provide habitat or refuge for juvenile fish. With local angling club membership dwindling, the project aimed to increase fish populations in the river through the introduction of a more diverse flow and the allowance of more frequent flooding.
}}
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{{Case_study_subcatchment
{{Image gallery}}
|Subcatchment=
{{Case study image
   
|File name=P1378.JPG
   
|Caption=River Evenlode, May 2006
      River Evenlode
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{{Case study image
|File name=P1386.JPG
|Caption=Created side bars, May 2006
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{{Case study image
|File name=P1401.JPG
|Caption=Backwater (for high water flows), May 2006
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{{Case study image
|File name=P1408.JPG
|Caption=Water access for lifestock, May 2006
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{{Case study image
|File name=P1432.JPG
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{{Case study image
|File name=P1437.JPG
|Caption=Spit in river, May 2006
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{{Case study subcatchment
|Subcatchment=Evenlode (Bledington to Glyme confluence)
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|Mn discharge=3.70 m3/s
|Mn discharge=3.70 m3/s
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{{Project_background
{{Project background
|Reach length directly affected=
|Reach length directly affected=2000 m
   
|Project started=2005/09/01
   
|Works completed=2006/03/01
      2000 m
|Total cost category=100 - 500 k€
|Project started=
|Total1 cost=140 k€
      2005/09/01
|Works started=
     
|Works completed=
      2006/03/01
|Project completed=
     
|Total cost category=
      100 - 500 k€
|Total1 cost=
      110 k€
|Funding sources=
     
|Investigation and design cost category=
     
|Invst and design cost=
     
|Investigation and design Lead organisation=
     
|Investigation and design Other contact forename=
     
|Investigation and design Other contact surname=
     
|Stakeholder1 engagement cost category=
     
|stk engagement cost=
     
|Stakeholder engagement Lead organisation=
     
|Stakeholder engagement Other contact forename=
     
|Stakeholder engagement Other contact surname=
     
|Works1 and supervision cost category=
     
|Wrk and supervision cost=
     
|Works and supervision Lead organisation=
     
|Works and supervision Other contact forename=
     
|Works and supervision Other contact surname=
     
|Post-project1 management and maintenance cost category=
     
|Post-project2 management and maintenance cost=
     
|Post-project management and maintenance Lead organisation=
     
|Post-project management and maintenance Other contact forename=
     
|Post-project management and maintenance Other contact surname=
     
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{{Motivations
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{{Measures
{{Measures
|Bank and bed modifications measure=
|Bank and bed modifications measure=Planting,Creation of pools and riffles, Introduction of spawning gravels,
   
|Floodplain / River corridor=Creation of backwaters
   
|Planform / Channel pattern=Channel narrowing,
      Planting,Creation of pools and riffles,Placement of spawning gravels
|Floodplain / River corridor=
      Creation of backwater structures
|Planform / Channel pattern=
     
|Other technical measure=
     
|Management interventions=
     
|Social measures=
     
|Wider stakeholder / citizen engagement=
     
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{{Additional_links_and_references_header}}
{{Additional links and references header}}
{{Additional links and references
|Link=www.therrc.co.uk/case_studies/evenlode_blenheimpalace.pdf
|Description=River Restoration Centre Case Study
}}
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{{Additional_links_and_references_footer}}
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Latest revision as of 10:29, 5 June 2017

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Location: 51° 52' 39.49" N, 1° 29' 42.45" W
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Project overview

Edit project overview
Status Complete
Project web site
Themes Habitat and biodiversity, Hydromorphology, Water quality
Country England
Main contact forename Nick
Main contact surname Haycock
Main contact user ID
Contact organisation Haycock Environmental Consultants
Contact organisation web site
Partner organisations Amenity Water
Parent multi-site project
This is a parent project
encompassing the following
projects
No
River Evenlode, post restoration

Project summary

Edit project overview to modify the project summary.


Due to their loss of spawning and nursery sites, rheophilic fish populations (especially barbel, chub and dace) the river Evenlode faced significant recruitment problems. These problems originate in the widening and dredging of the channel leaving it over-sized, with few features to provide habitat or refuge for juvenile fish. With local angling club membership dwindling, the project aimed to increase fish populations in the river through the introduction of a more diverse flow and the allowance of more frequent flooding.

Monitoring surveys and results

This case study hasn’t got any Monitoring survey and results, you can add some by editing the project overview.

Lessons learnt

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Image gallery


River Evenlode, May 2006
Created side bars, May 2006
Backwater (for high water flows), May 2006
Water access for lifestock, May 2006
P1432.JPG
Spit in river, May 2006
ShowHideAdditionalImage.png


Catchment and subcatchment

Catchment

River basin district Thames
River basin Cotswolds

Subcatchment

River name Evenlode (Bledington to Glyme confluence)
Area category 100 - 1000 km²
Area (km2)
Maximum altitude category 200 - 500 m
Maximum altitude (m) 213213 m <br />0.213 km <br />21,300 cm <br />
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Arable and Horticulture
Waterbody ID GB106039029960



Site

Name River Evenlode
WFD water body codes GB106039029960
WFD (national) typology
WFD water body name Evenlode (Bledington to Glyme confluence)
Pre-project morphology High width:depth
Reference morphology 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, Sand, Cobble
River corridor land use Extensive agriculture
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) 3.70 m3/s3,700 l/s <br />
Average channel gradient category
Average channel gradient
Average unit stream power (W/m2)


Project background

Reach length directly affected (m) 2000 m2 km <br />200,000 cm <br />
Project started 2005/09/01
Works started
Works completed 2006/03/01
Project completed
Total cost category 100 - 500 k€
Total cost (k€) 140 k€140,000 € <br />
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

Mitigation of a pressure
Hydromorphology Substrate conditions, Width & depth variation, Continuity of sediment transport, Flow velocities
Biology Fish: Species composition, Fish: Abundance
Physico-chemical
Other reasons for the project Landscape enhancement, Recreation


Measures

Structural measures
Bank/bed modifications Planting, Creation of pools and riffles, Introduction of spawning gravels
Floodplain / River corridor Creation of backwaters
Planform / Channel pattern Channel narrowing
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other


Monitoring

Hydromorphological quality elements

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

Biological quality elements

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

Physico-chemical 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

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


Monitoring documents



Additional documents and videos


Additional links and references

Link Description
http://www.therrc.co.uk/case studies/evenlode blenheimpalace.pdf River Restoration Centre Case Study

Supplementary Information

Edit Supplementary Information