Conningbrook Wetlands
The wetlands method works by extracting a small amount of the flow from the river, passing it through specially planted reed beds which help to filter the nitrogen and phosphorus from the water, before allowing flow to rejoin the main river.
Client: Quinn Estates
Status: Construction complete - operational February 2024
Services
Flood Risk Services
- Flood Risk Assessment (FRA)
- Sustainable Drainage Strategy
- Flood Defence (Mitigation) Strategy
- Flood Investigation
- Hydrology & Hydraulic Modelling
- Flood Emergency Plan
- Basement Impact Assessment (BIA)
- Groundwater Flooding
- Expert Witness
Environmental Services
- Nutrient Neutrality
- Flow & Water Quality Monitoring & Sampling
- River Geomorphological Survey & Assessment
- Water Framework Directive (WFD) Assessment
- Water Resources Assessment
- Environmental Impact Assessment (EIA)
- Air Quality Assessment (AQA)
- Catchment Management Plans
- Environmental Permits, Licences & Consents
- Expert Witness
Engineering Services
- Sewerage Design
- Sustainable Drainage Systems (SuDS) Design
- Landscape Amenity & Sport Facility Drainage
- Earthworks Design
- River Design
- Roads & Driveways
- Expert Witness
Project details
The project represents the first technical solution using a wetland to address nutrient neutrality in the South East of England.
Technical elements of the project were developed by Water Environment Ltd working closely with Water Design Engineers over a period of three years to obtain the approval of Natural England in respect of the impacts on the Stodmarsh Nature Reserve.
Associated work also included completion of a Water Framework Directive Assessment, including walkover survey and River Condition Assessment, hydraulic modelling and design of in-channel improvements.
Planning permission was obtained from Ashford Borough Council in July 2022, with the abstraction license and Flood Risk Activity Permit issued by the Environment Agency in November 2022.