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

More documents

Recommendations

Info

84What does the SFRA not provide?The SFRA is an area-wide study and the level of detail is commensurate with itsstrategic nature. It does not provide suitably detailed site-specific information,such as design flood levels. A site-specific flood risk assessment is still requiredto cover in more detail all sources of flood risk for individual developments. Thelevel of detail required for a site-specific flood risk assessment depends on the scaleand nature of the development and the risks involved.Planning GuidelinesWhere does the SFRA fit in the planning process?The SFRA is not a statutory planning document. It is a consultation document thatshould be used to inform a development plan or local area plan, enabling theimplementation of the sequential approach and the testing of development zoningagainst flood risk criteria. It can also be used to assist other planning decisions,such as development management, and emergency planning. In any instance, asite-specific flood risk assessment may be required when deciding on the grant ofplanning permission.What is the sequential approach?The sequential approach uses mapped flood zones alongside considerations of thevulnerability of different types of development to give priority to development inzones of low flood probability. Only if there are no reasonable sites available inzones of low flood probability should consideration be given to development inhigher flood probability zones. The sequential approach should also be used withinsites to help ensure that the most vulnerable uses are sited in the area of lowestprobability.What is the Justification Test?Where there are insufficient sites available to locate development outside floodrisk areas, it may be necessary, to meet the objectives of proper planning andsustainable development, for development to be sited within flood risk areas. TheJustification Test is an examination of such proposals against proper planning andsustainable development criteria and, if these are satisfied, against flood risk criteriato ensure that risks are reduced to an acceptable level and that flood risk is notincreased elsewhere.How is vulnerability defined?Different types of development are classified as being highly vulnerable, lessvulnerable or water-compatible, depending largely on the risks to people who willuse the development, the effects of damage to buildings and structures that mightbe caused by flooding, and the potential environmental damage that could becaused arising from pollution caused by the development were it to flood.What is the definition of the flood zones in these guidelines?The flood zones are defined on the basis of the probability of flooding from riversand the sea. Because of the generally more dynamic nature of coastal flooding
compared to river flooding, a lower probability of coastal flooding is used to definethe highest-risk zone.85• Zone A is at highest risk and has a 1 in 100 (or 1%) chance of flooding in anyone year from rivers and a 1 in 200 (or 0.5%) chance of flooding from the sea.• Zone B is at moderate risk of flooding from rivers and the sea and its outerlimit is defined by a 1 in 1000 (or 0.1%) chance of flooding in any one year.• Zone C is the low risk area, with a less than 1 in 1000 (
Page 7:
At the site-specific level, develop
Page 10 and 11:
Planning Guidelines
Page 12 and 13:
2regard to the guidelines in the pe
Page 14 and 15:
4Planning GuidelinesReport of the F
Page 16 and 17:
6Chapter 2:Flooding - Key ConceptsP
Page 18 and 19:
82.5 Increase in flooding due to de
Page 20 and 21:
10Flood risk2.13 Understanding floo
Page 22 and 23:
122.21 In undertaking a flood risk
Page 24 and 25:
142.30 Increases in rainfall intens
Page 26 and 27:
16after periods of heavy rainfall.
Page 28 and 29:
18that also meet the objectives of
Page 30 and 31:
20more than 1 in 200). Development
Page 32 and 33:
22Government under Section 28 of th
Page 34 and 35:
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 86 and 87: 76drainage processes and removing p
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 96 and 97: 86pressure in the embankment and ge
Page 98: Printed on recycled paper containin
show all

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

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?