Figure 10.10b: South Docks Minimum Finished Floor Levels .
10.111 To ensure that proposed buildings are at low risk of surface water flooding, it is proposed to set minimum finished floor levels (FFL) at least 300mm above the predicted 1 in 100 year pluvial flood level, which varies across the docks. 10.112 It is recommended that this minimum level apply only to Water Compatible Development and Less Vulnerable Development as defined by the Flood Risk Planning Guidelines 3 , and subject to site specific flood risk assessment demonstrating appropriate flood mitigation strategy. 10.113 Highly Vulnerable Development shall be positioned above the 1 in 200 year tidal flood level, including appropriate allowances for climate change, residual risk (breach and overtopping) and freeboard. It is envisaged that minimum FFL along the quayside would be set at or above the proposed polder defence level of +3.8m - +4.35m OD, except for the western transition from Albert Quay where a minimum FFL of +3.8m OD can be accommodated due to constraints imposed by existing streetscapes.
10.114 Proposed Minimum Finished Floor Levels are provided in Figure 10.10b and in the Character Area Guidance, below. The proposed ground levels are set out in Appendix One of the South Docks Drainage Strategy currently being completed.
Development Management Controls
SuDS and Site run-off
10.115 It is proposed that all private developments will provide on-site storage for surface water, to prevent overwhelming of the capacity of the proposed public system during extreme events and thus share the burden of providing the necessary storage volume. The gradual implementation of this storage will incrementally reduce the pressure on the public drainage system, thus providing flexibility in the relative timing of the delivery of both public and private sector developments and infrastructure.
3 “The Planning System and Flood Risk Management: Guidelines for Planning Authorities”, OPW/DoEHLG, 2009.
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Cork City Draft Development Plan 2022-2028
Volume 1 I Chapter 10
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