The Planning System and Flood Risk Management - Offaly County ...

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76drainage processes and removing pollutants from urban run-off atsource; and• Avoiding structures in the floodplain.Figure B4 below illustrates the application of the principles above in a landscapeplanning context.Planning GuidelinesFig. B4: Landscape Planning and Flood RiskFigure B5 below illustrates the application of the principles above in a SuDSplanning and management context.Fig. B5: SuDS Planning and Flood Risk3.5 Site layoutThe broader framework planning of the case study site illustrates theimportance of getting the context right for more detailed site layout. Importantdesign issues to consider at the more detailed site layout stage include:
• The size, shape and qualities of the landscape and planting; and• The incorporation of detailed Sustainable Drainage Systems (SuDS)measures into the design.77More detailed issues of building design and construction are dealt with insection 4 of this appendix.Figure B6 below illustrates examples of the application of detailed measuresto an illustrative site example.Fig. B6: Detailed Site Layout PlanningThe main aspects of the scheme illustrated in Figure B6 include:• The identification of a focal space as part of green open space networkwith clear routes of movement and escape to higher ground;• Ease of access to higher land in the event of a flood;• Clear water conveyancing routes free of barriers such as walls or buildings;• Choice of durable flood resistant plant species;• A conventional low-cost earth bund and arrangements to removerainwater or floodwater seepage from within the bund;Planning Guidelines
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At the site-specific level, develop
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Planning Guidelines
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2regard to the guidelines in the pe
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4Planning GuidelinesReport of the F
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6Chapter 2:Flooding - Key ConceptsP
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82.5 Increase in flooding due to de
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10Flood risk2.13 Understanding floo
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122.21 In undertaking a flood risk
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142.30 Increases in rainfall intens
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16after periods of heavy rainfall.
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18that also meet the objectives of
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20more than 1 in 200). Development
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22Government under Section 28 of th
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24Planning GuidelinesDevelopment in
Page 36 and 37: 26Chapter 4:Flooding and Spatial Pl
Page 38 and 39: 28floodplain. Effective co-ordinati
Page 40 and 41: 30Planning GuidelinesFig. 4: Develo
Page 42 and 43: 32• Include zoning objectives to
Page 44 and 45: 34specific areas, ensuring that flo
Page 46 and 47: 36should use the flood risk informa
Page 48 and 49: 38planning authority to ensure that
Page 50 and 51: 40• these guidelines, and in part
Page 52 and 53: 425.22 Where development proposals
Page 54 and 55: 44Chapter 6:ConclusionPlanning Guid
Page 56 and 57: 46TermsDefinitionPlanning Guideline
Page 64 and 65: 54Appendix A - Screening for andCar
Page 66 and 67: 56Climate changeincreased intensity
Page 68 and 69: 58Strategic assessments provide the
Page 70 and 71: 60As part of a FRA, information on
Page 72 and 73: 62A successful FRA is characterized
Page 74 and 75: 64• Suggested policies for sustai
Page 76 and 77: 66Planning Guidelines• The impact
Page 78 and 79: 68An additional document on interpr
Page 80 and 81: 70Table A2: The Flood Risk Balance
Page 82 and 83: 72Appendix B - Addressing FloodRisk
Page 84 and 85: 74Figure B2 below illustrates how t
Page 88 and 89: 78• Signing of floodplain areas s
Page 90 and 91: 80flood level. Care must be taken t
Page 92 and 93: 82Appendix C - Frequently AskedQues
Page 94 and 95: 84What does the SFRA not provide?Th
Page 96 and 97: 86pressure in the embankment and ge
Page 98: Printed on recycled paper containin
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