Wey and Arun Canal
Proposals for Phase 1 include the use of short reaches of the Cranleigh Waters for navigation, linked with new sections of canal close to the original alignment. The scheme, designed as a linear-park to provide both recreation and environmental benefits, includes; in-channel improvement works, relandscaping of an existing island, new reaches of navigable channel, design of new and replacement bridges, construction of two new locks with associated towpaths, a winding hole and a lift bridge structure, remedial works to repair previous flood damage and provision of a natural fish pass to improve river continuity.
Client: Wey and Arun Canal Trust
Status: In planning, submitted in October 2020
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
Early-stage work focused on refinement of the design to minimise impact on flood risk. This included numerous walkover surveys to inform hydraulic modelling of the watercourse, with extensive optioneering of the canal design to ensure no risk of adverse impacts offsite. Improvements were sought to alleviate current flooding issues and reduce risks to neighbours.
The design of a new step-pool fish pass seeks to allow upriver migration of fish and presents an opportunity for improvement to the river habitat, in addition to wider ecological benefits presented by the development overall.
Water Environment Ltd worked in collaboration with the Trust, specialist ecologists, landscape and arboricultural consultants to assess the design as it evolved to ensure the best overall scheme was proposed, within the environmental constraints presented.
Hydraulic modelling and Flood Risk Assessments were prepared, and presentations were given to members of the public regarding the flood risk impact and improvements.