Wake County Hazard Mitigation Plan - January 2020

SECTION 7: MITIGATION ACTION PLANS

Table 7.2 – Mitigation Action Plan, City of Raleigh

City of Raleigh

Potential Funding Sources

Action #

Hazard(s) Addressed

Relative Priority

Lead Agency/ Department

Implementation Schedule

Description

Goal

Objective

Estimated Cost

2019 Status

Status Comments/Explanation

Prevention

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 during calendar year 2019. Enhancements would include the continued ability to restore and upgrade dams and spillways associated with safety improvements as well as removal of dams to protect safety and restore natural conditions City Stormwater is currently working on an Integrated Stormwater Management Master Plan. Basin studies will be reviewed and updated as needed with further improvement needs and opportunities identified and prioritized. Reduction of flooding hazards remains a key priority for improvement projects.

Establish a Lake Preservation Policy that encourages private property owners to preserve existing lakes and ponds, and in certain circumstances provides for public assistance.

Raleigh Engineering Services

In-Progress – Carry Forward

P-1

4

1

Flood

Moderate

$100,000 - $1m

Local

1 year

Develop ongoing multi-year program of detailed basin studies for each watershed in City’s jurisdiction. Fifteen basin studies are complete with 10 additional studies budgeted in the capital program. (CRS 410). Planning Commission to consider program to develop future conditions floodplain mapping for all FEMA mapped areas (this is already done for non-FEMA mapped areas). The program would consist of a multi-year capital program for mapping for all FEMA streams in the ETJ and consideration of changes to development regulations in these areas. Future conditions would be based on expected development per the Comprehensive Plan and zoning maps. Reallocation of Falls Lake water conservation pool; increased available storage for water supply by 4.1B gallons Implementation of a regional mutual aid contract between local water utilities which would describe how the utilities would provide assistance if a partner utility experienced a water shortage Develop a written Resiliency Plan for City of Raleigh operations and services, including infrastructure resilience, community resilience, ecosystem resilience and governance resilience. Water Shortage Response Plan which uses a hydrologic model (OASIS) to establish risk based drought triggers that are designed to reduce water demand before severe drought conditions and also when to exit drought triggers when conditions improve. Update and maintain GIS data of building footprints, parcels, and critical facilities, and use it to regularly identify buildings in need of mitigation. Develop ongoing program designed to utilize Federal grant resources to assist private property owners in relocating existing structures out of flood hazard zones. (CRS 500/510/520)

Raleigh Engineering Services

In-Progress – Carry Forward

P-2

2

2

Flood

Moderate

$100,000 - $1m

Local

1 year

The preliminary maps that have all FEMA floodplain in the city studied for future conditions. Our ordinance is already set up to enforce these areas. Once the maps are effective this effort will be complete.

Raleigh Engineering Services

In-Progress – Carry Forward

P-3

4

2

Flood

Moderate

$100,000 - $1m

Local

3-5 years

Public Utilities Department

Ongoing - Next 5 years

N/A

P-4

2

1

Drought

High

No cost

N/A

New

Variable - depends on volume of water transferred between systems

Public Utilities Department

Public Utilities Dept

Ongoing - Next 5 years

N/A

2

2

Drought

High

P-5

New

Less than $100,000

N/A

P-6

4

1

All

High

Office of Sustainability

Unknown

2-3 years

New

Public Utilities Department

Ongoing - Next 5 years

N/A

P-7

2

2

Drought

Moderate

No cost

N/A

New

Updated data will be used in future plan updates and risk assessments and to identify properties that should be prioritized for mitigation.

Raleigh Information Technology, GIS staff

Ongoing - Next 5 years

New

P-8

2

2

All

Moderate

Staff time

Local

Property Protection

The city is cataloging potential candidates for relocation based on our current repetitive loss list. Staff has developed a scoring system based on cost benefit for relocation.

Raleigh Engineering Services

In-Progress – Carry Forward

PP-1

3

2

Flood

Moderate

$100,000 - $1m

Local, Federal

3-5 years

Wake County Multi-Jurisdictional Hazard Mitigation Plan 2019

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