Drainage & Flooding


A Flood Risk Assessment (FRA) will be submitted as part of the outline planning application.

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Low risk of on-site flooding

Low risk of flooding from rivers or the sea

Low risk of flooding from other sources such as surface water and groundwater

No increased risk of on-site flooding

Any surface water runoff will be managed by attenuation and controlled discharge directly into the ground. A site investigation has confirmed that the site geology makes the site suitable for this method

A series of basins/ponds, swales, soakaways and areas of permeable paving will be used to control surface water flows, they will also act as a buffer to store water during periods of high rainfall, then discharge rainwater to the ground

Site will absorb 1 in a 100-year rainfall event

Plus an additional allowance to account for increased rainfall due to climate change, providing a betterment over the existing scenario

No negative impact on local sewers

The public sewer records show surface water and foul sewers located in Downland Drive to the west of the site and King George VI Avenue to the south. Public water mains records also shown water mains within Downland Drive, King George VI Avenue and along the eastern site boundary. Any proposed housing units will be kept clear of these sewers and water mains, with appropriate easements

  Swale

Swale

  Local Pond

Local Pond

  Permeable Paving

Permeable Paving