Case study:Lullingstone Castle phase 2

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Location: 51° 21' 9.84" N, 0° 11' 24.29" E

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Project overview

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

Example of first phase works

Project summary

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Aimed to improve the overall habitat of this section of river with a particular focus on habitat creation which would support spawning opportunities as well as juvenile and adult habitat for native Brown Trout. This was recognised as a section in very poor condition. The specific objectives were as follows:
1. To improve in-stream habitat by cleaning areas of loose gravels and increasingly flow rates to an optimal level to support fish, especially brown native trout, and creating habitat to support both juvenile and adult fish.
2. Increase natural flows which, even during low flows during the summer, can provide a healthy and diverse habitat.
3. Clear heavily shaded trees and plant marginal aquatic plants to support invertebrates and other aquatic life (water voles).
4. Improve the appearance of the river by creating a natural sinuous flow through this stretch of river, narrowing the channel using large woody debris and woody faggots to create in-channel structures.
5. Increase fishing opportunities within the river (and overall condition of the section). Over abstraction has led to the degradation of the Darent, where characteristic chalk-river chacateristics: clear water, macrophytes, low bans and natural flows have been lost. It has experienced heavy modification and provided power for milling and historic agricultural irrigation. The river also flows into a number of large on-line lakes that fragment habitat and put additional pressure on water quality and quantity.

Monitoring surveys and results

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Lessons learnt

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Qualitative success criteria were developed by the Project Partnership. All of the aims have been delivered upon with observed improvements in the quality of habitat and features particularly. It is believed that fish populations are improving, with wild brown trout being caught, suggesting that it could become an important local breeding area. Further areas where improvements can be made are being identified.

Image gallery

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Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Thames River basin Darent Subcatchment River name Mid Darent Area category 100 - 1000 km² Area (km2) Maximum altitude category 200 - 500 m Maximum altitude (m) 244244 m <br />0.244 km <br />24,400 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Arable and Horticulture Waterbody ID GB106040024222 Other case studies in this subcatchment: Darent Valley Path, Lullingstone Castle, River Darent at Hawley Manor Site Edit site Name WFD water body codes GB106040024222 WFD (national) typology WFD water body name Mid Darent 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 Dominant hydrology Dominant substrate River corridor 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 Edit project background Reach length directly affected (m) 500 m0.5 km <br />50,000 cm <br /> Project started 2011/01/01 Works started Works completed 2011/01/01 Project completed Total cost category 1 - 10 k€ Total cost (k€) Benefit to cost ratio Funding sources Environment Agency (Fisheries) Contribution of staff time (NWKCP, KAPS) 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 Edit reasons for restoration Mitigation of a pressure Hydromorphology Freshwater flow regime, Substrate conditions Biology Fish, Invertebrates, Macrophytes Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Habitat creation Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit 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 Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information