Strategic Flood Risk Assessment for the Draft Cork City Development Plan 2022-2028
No.
Reference from Plan
Provision management of existing and potential future flood risks. The Guidelines recommend a sequential approach to spatial planning, promoting avoidance rather than justification and subsequent mitigation of risk. The guidelines define the Justification Test as an assessment of whether a development proposal within an area at risk of flooding meets specific criteria for proper planning and sustainable development and demonstrates that it will not be subject to unacceptable risk nor increase flood risk elsewhere. The Justification Test should be applied only where development is within flood risk areas that would be defined as inappropriate under the screening test of the sequential risk-based approach. Cork City Council will adopt a precautionary approach, namely to avoid development in floodplains, wetlands and coastal areas prone to flooding and so preserve these natural defences that hold excess water until it can be released slowly back into river systems, the sea or seep into the ground. Where flood risk is an issue, applicants will generally be required to carry out a site specific Flood Risk Assessment (apart from minor developments, where such an approach would not be justified). Policy in relation to the incorporation of measures such as Sustainable Urban Drainage Systems (SUDS) to reduce surface runoff is outlined above and should be incorporated in so far as possible to reduce risks. To provide adequate storm water infrastructure in order to accommodate the planned levels of growth within the plan area and to ensure that appropriate flood management measures are implemented to protect property and infrastructure. To protect, enhance and manage the City’s floodplains, wetlands and coastal habitat areas that are subject to flooding as vital ‘green infrastructure’ which provides space for storage and conveyance of floodwater, enabling flood risk to be more effectively managed and reduce the need to provide flood defence infrastructures. Cork Council will also require that all proposed flood protection or alleviation works will be subject to Appropriate Assessment to ensure there are no likely significant effects on the integrity, defined by the structure and function, of any European Sites and that the requirements of Article 6 of the EU Habitats Directive are met. To work with the Office of Public Works (OPW) in the progression and completion of Flood Risk Management Plans and flood relief schemes including the Lower Lee Flood Relief Scheme (LLFRS), schemes in Blackpool, Glanmire / Glashaboy, Douglas / Togher and other schemes that may be developed during the period of the plan. (a) To restrict development in identified flood risk areas, in particular flood plains. All new development proposals shall comply with the requirements of the Planning System and Flood Risk Management –Guidelines for Planning Authorities (2009) and Department of Environment, Community and Local Government Circular PL2/2014, in particular through the application of the sequential approach and the Development Management Justification Test. (b) All significant proposals for development identified as being vulnerable to flooding will be required to provide a site specific Flood Risk Assessment to identify potential loss of floodplain storage and proposals for the storage or attenuation (e.g. SUDS) of run-off discharges (including foul drains) to ensure development does not increase the flood risk in the relevant catchment. (c) Adopt a river catchment approach to rivers entering the City, practicing natural flood management wherever practical and appropriate. Development proposals should integrate green and blue infrastructure measures to offset 11.216
3
Objective 9.6 Storm Water
4
Objective Protection
9.8
Flood
5
Objective
9.9
Flood
Protection Schemes
6
Objective 9.10 Development in Flood Risk Areas
7
Development Management Paragraph 11.216
peak flood flows including the following options: (1)
Nature-based solutions and “slow-the-flow” initiatives. Incorporation of SUDS to limit runoff from existing and new development.
(2) (3) (4) (5) (6) (7) (8)
Wetland enhancement on floodplains. Native tree planting and landscaping schemes. Rainwater harvesting and rainwater boxes. Natural banks, water dykes and water squares. Natural flood management techniques. Green roofs and green walls
CAAS for Cork City Council
16
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