- The council will permit development including change of use, where the applicant can demonstrate that satisfactory and sustainable measures will be implemented to overcome the impacts from flooding, where it would:
- a.be at risk from flooding;
- b.increase the risk of flooding elsewhere;
- c.hinder future access to watercourses for maintenance purposes;
- d.cause loss of the natural floodplain;
- e.affect the integrity of existing flood defences; or
- f.increase surface water run-off.
- Development within areas at risk from flooding must include measures to ensure it is resilient in the event of flood events. Such measures are essential so as to reduce the likelihood that properties will be inundated by water in the event of a flood event. The development should include places of safety and access and egress above designed flood levels. Planning permission will be refused if a development is not demonstrably safe, resilient to flood risk and drained sustainably.
- Applicants should consult with the water and sewerage undertaker to confirm the extent and nature of flood risk from sewers and reservoirs.
- Development adjacent to Main Rivers must provide an undeveloped buffer zone of at least 8 metres (preferably 10 metres) from the top of the riverbank to allow for maintenance access, ecological protection, and flood risk management.
- Where development affects fluvial floodplain storage, proposals must demonstrate level-for-level, volume-for-volume compensation within the 1 in 100-year flood extent (plus climate change allowance). This compensation should be delivered within the locality of the development to ensure it supports the flood risk management needs of the area in question.
- A flood risk monitoring framework may be required to demonstrate long-term management and maintenance of measures. For developments subject to FRA, there must be a commitment to ensure occupants to sign up to flood warning services from the EA. Planning permission will be refused if a development is not demonstrably safe, resilient to flood risk and drained sustainably.
Explanation
- 542) The Flood and Water Management Act (2010) assigns capabilities for managing local sources of flooding from surface water, groundwater and small (“ordinary”) watercourses to Lead Local Flood Authorities. Stockport Council is its own Lead