Wake County Hazard Mitigation Plan - January 2020

SECTION 7: MITIGATION ACTION PLANS

Table 7.4 – Mitigation Action Plan, Town of Cary

Town of Cary

Hazard(s) Addressed

Relative Priority

Lead Agency/ Department

Potential Funding Sources

Implementation Schedule

Action #

Description

Goal Objective

Estimated Cost

2019 Status

Status Comments/Explanation

Prevention

Town’s Comprehensive Plan- The Town has an existing comprehensive plan which includes land use, parks and recreation, open space, transportation, utilities, and environment.

$1M for plan development; implementation ongoing

Cary's comprehensive plan, called alternately the Cary Community Plan and the Imagine Cary Plan was finalized on January 24, 2017. Implementation in-process. Multi-pronged approach including 5 key components: 1) Working Group of residents and local experts to learn and advise 2) Maintenance, including Condition Assessment (a separately listed "action") 3) Open Space, examining how open space and tree canopy provide stormwater benefits 4) Model, hiring a firm to build a hynamic rainfall-runoff model to establish a baseline and test solutions and scenarios 5) Ordinance, looking at the stormwater ordinance as a way to achieve our risk mitigation goals In phase 4, (1-GIS Assessment Tool, 2-GIS Mapping Data and assessment, 3-Modeling, 4-Maintenance) Assessment Tool completed. GIS Mapping 99% completed.

In-Progress – Carry Forward

P-1

4

2

All

High

Cary Planning

General Fund

2-3 years

General Fund and $300K Grant

P-2

Adaptive Approach to Stormwater

4

1

Flood

High

Cary Stormwater

$900,000

Ongoing

New

P-3

Stormwater Condition Assessment Program

4

2

Flood

High

Cary Stormwater

$750,000

General Fund

2-3 years

New

P-4 P-5 P-6

Develop flood model for upper Swift Creek watershed

2 2 2

2 2 2

Flood, Hurricane Flood, Hurricane

High High

Cary Stormwater Cary Stormwater Cary Stormwater

Unknown Unknown Unknown

Town Funds Town Funds Town Funds

1 year

New New New

N/A N/A N/A

Develop flood model for Symphony Lake Engineering evaluation of Tryon Road dam

2-3 years 3-5 years

Dam Failure

Moderate

Conduct study and develop improvement plan for Twin Lakes dam Conduct flood study on Town-owned lake/dam, including breach analysis

P-7

2

2

Dam Failure

High

Cary Stormwater

Unknown

Town Funds

3-5 years

New

N/A

River Flooding, Dam Failure

P-8

2

2

High

Cary Stormwater

Unknown

Town Funds

2-3 years

New

N/A

On-going partnership among Triangle area jurisdictions intended to do joint resilience planning and action. The group's first deliverable of a Triangle Regional Resilience Assessment was finalized late 2018. The group is continuing to meet and consider how it may implement recommendations of the assessment together.

Variable (depending on outside consultants)

River Flooding, Wildfire, Drought, Extreme Heat

General Funds

Ongoing

New

P-9

Triangle Regional Resiliency Partnership

4

1

Moderate

Town of Cary

Property Protection

PP-1

Culvert Replacement - Arbor Brook

3

2

Flood

High

Cary Stormwater

$400,000

General Fund

1 year

New

Replace existing culverts with larger culverts

PP-2

Culvert Replacement - Two Creeks

3

2

Flood

High

Cary Stormwater

$800,000

General Fund

1 year

New

Replace existing culverts with larger culverts

Natural Resource Protection

In planning phase. Implementing SW management above and beyond state requirements. Detention of 2, 5 and 10-year storm reduces scour on receiving stream. Extra 50-foot buffer (UTB) on USGS streams; no buffers platted in lots.

Cary Stormwater and Facilities

NRP-1 Downtown Park

3

2

Flood

High

$750,000

General Fund

2-3 years

New

Private (Developer) Funds

Ongoing - Next 5 Years

Cary Stormwater and Cary Planning

Over $10,000,000

NRP-2 Buffer and UTB Protection

3

2

Flood

High

New

Structural Projects

SP-1

Infrastructure improvements on Summer Lakes Dr.

3

2

Flood

High

Cary Stormwater

$900,000

General Fund

1 year

New

Replace existing undersized culverts

SP-2 SP-3

Infrastructure improvements on Vincrest Ct Update Water Shortage Response Plan

3 2

2 4

Flood

High High

Cary Stormwater

$400,000 Staff Time

General Fund

2-3 years

New New

Replace existing undersized culverts

Drought

Town of Cary

N/A

1 year

N/A

Wake County Multi-Jurisdictional Hazard Mitigation Plan 2019

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