APPENDIX C: MITIGATION ALTERNATIVES
create opportunities for the public to benefit from education and recreation while eliminating potential for future flooding. The City of Raleigh’s Future Land Use Map designates preservation, conservation, and conservation-residential lands to maintain open space throughout the City. Planning for open space must also be supplemented with development regulations to ensure that stormwater runoff is managed, and that development is protected from flooding. Future flood losses in Raleigh will be reduced through the implementation of the International Building Code, the City’s Flood Damage Prevention Ordinance, and Stormwater Management Ordinance. Enforcement of the flood protection elevation requirement will provide an extra level of protection for buildings constructed in the City. Stormwater management and the requirement that post-development runoff cannot exceed pre- development conditions is one way to prevent future flood losses. Retention and detention requirements also help to reduce future flood losses. CRS Credit The CRS encourages strong building codes. It provides credit in two ways: points are awarded based on the community's Building Code Effectiveness Grading Schedule (BCEGS) classification and points are awarded for adopting the International Code series. The HMPC was concerned about the State Building Code Council and the implementation of the most current version of the International Building Code. CRS credits are available for regulations that encourage developers to preserve floodplains or other hazardous areas away from development. There is no credit for a plan, only for the enforceable regulations that are adopted pursuant to a plan. The City of Raleigh could receive credit for Activity 430 – Higher Regulatory Standards and for Activity 420 – Open Space Preservation for preserving parcels within the SFHA as open space. Preserving flood prone areas as open space is one of the highest priorities of the Community Rating System. The credits in the 2017 manual have doubled for OSP (Open Space Preservation). The City of Raleigh could also receive credit for Activity 450 – Stormwater Management for enforcing regulations for stormwater management and soil and erosion control. The HMPC did not recommend any changes to the City’s Comprehensive Plan, Zoning Ordinance, or Subdivision Ordinance, but did agree that higher standards should be considered for the Flood Damage Prevention Ordinance. Table C.1 – Prevention Mitigation Options and Recommended Projects Action # Mitigation Action Reason for Pursuing / Not Pursuing Funding Prevention Measures Considered by HMPC and Not Recommended - n/a
Encourage voluntary compliance with floodplain development regulations. Manage growth and development in the City through a constantly updated Master Plan.
Could save money on enforcement but would not guarantee compliance with standards. Limited staff resources and monies to support constant updates to a Master Plan. No political appetite for lowering the 50% threshold. Would be difficult to get Council support.
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n/a
Incorporate a lower substantial threshold for damage and improvement
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n/a
Prevention Measures and Funding Recommended for Implementation
City Stormwater has also worked with the Stormwater Management Advisory Commission to develop recommendations to further enhance the lake preservation program. It is anticipated that the revised program will be considered by City Council
Establish a Lake Preservation Policy that encourages private property owners to preserve existing lakes and ponds, and in certain circumstances provides for public assistance.
Operating Budget
P-1
Wake County Multi-Jurisdictional Hazard Mitigation Plan 2019
C.5
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