CRS AUDIT

A STUDY ON TYBEE ISLAND’S CRS AND OPEN SPACE PROGRAM

National Flood Insurance Program Community Rating SystemAugust 28, 2014

BACKGROUND

• CRS RECERTIFICATION & CYCLE VISIT APRIL 2014

• NEW CRS MANUAL 2013

• CHANGES TO ACTIVITIES / CREDITS

• BIGGERT WATERS ACT/HOMEOWNER FLOOD INSURANCE AFFORDABILITY ACT OF 2014

TYBEE ISLAND – CRS PROGRAM AUDIT

CATEGORIES OF FLOODPLAIN MANAGEMENT ACTIVITIES:

• PUBLIC INFORMATION

• MAPPING AND REGULATIONS

• FLOOD DAMAGE REDUCTION

• WARNING AND RESPONSE

OPEN SPACE PRESERVATION

1450 POINTS

50 POINTS

350 POINTS

50 POINTS

250 POINTS

600 POINTS

120 POINTS

• Open Space Preservation (OSP)• Deed Restrictions (DR)• Natural Functions Open Space (NFSP)• Special Flood-Related Hazard Open

Space (SHOS)• Open Space Incentives (OSI)• Low-Density Zoning (LZ)• Natural Shoreline Protection (NSP)

OPEN SPACE PRESERVATION

• Open Space Preservation (OSP)• Deed Restrictions (DR)• Natural Functions Open Space (NFSP)• Special Flood-Related Hazard Open Space

(SHOS)

• Open Space Incentives (OSI)• Low-Density Zoning (LZ)• Natural Shoreline Protection (NSP)

Credits local regulations

Credit specific to properties

Total Site6 Acres

Total Site6 Acres

Area in SFHA3 Acres

Total Site

6 Acres

Area in SFHA

3 Acres

Impervious Area in SFHA

0.75 Acres

OSP Eligible

2.25 Acres

Total Site

6 Acres

Area in SFHA

3 Acres

Impervious Area in SFHA

0.75 Acres

OSP Eligible

2.25 Acres

Total acreage in SFHA = 100Acreage of Open Space = 2.25Ratio of Open Space = 0.0225

(2.25 / 100)Open Space points for this Site =

32.6 (0.0225 x 1450)

OPEN SPACE PRESERVATION• TOTAL ACREAGE OF THE CITY

• 2,046 ACRES

• TOTAL ACREAGE OF SPECIAL FLOOD HAZARD AREA

• 1,768 (86% OF CITY)

• AE ZONE, 1,200 ACRES (59%)

• VE ZONE, 568 ACRES (28%)

• Beach• Dunes• Parks• Coastal Marshlands• Conservation

Easements• Other

aOSP / aSFHA = rOSPrOSP * 1450 = Open Space

Points

OPEN SPACE PRESERVATION (OSP)

aOSP rOSP = (OSP / aSFHA)

OSP Points (rOSP*1450)

Beach 200.1 0.113 164.11

Dunes 108.6 0.061 89.07

Memorial Park 7.2 0.004 5.90

Jaycee Park 9.4 0.005 7.71

Tybee Lighthouse * 6 0.003 4.92

Coastal Marshlands 502.25 0.284 411.92

4-H Center * 6.31 0.004 5.18Buza Property 0.6 0.000 0.49

Sallie Pearce 7.4 0.004 6.07

19th Street - Conservation 0.6 0.000 0.49

Buckley Property - Hwy 80 16.4 0.009 13.45

OSP = 710

OPEN SPACE PRESERVATION

Total Site = 11.3 acres

OSP Eligible = 7.2 acres

DEED RESTRICTIONS (DR)ADR / ASFHA = RDR

RDR * 50 = DEED RESTRICTION POINTS

aDR rDR = (aDR/aSFHA) DR = (rDR*50)

Beach 200.1 0.113 5.66Dunes 108.6 0.061 3.07

Jaycee Park 9.4 0.005 0.27

Coastal Marshlands 502.25 0.284 14.20

Buza Property 0.6 0.000 0.02

Sallie Pearce 7.4 0.004 0.2119th Street - Conservation 0.6 0.000 0.02Buckley Property - Hwy

80 16.4 0.009 0.46

Deed Restrictions50 Points

DR = 24

COASTAL MARSHLANDS PROTECTION ACT

• GENERAL ASSEMBLY DECLARES THAT COASTAL MARSHLANDS OF GA ARE A VITAL NATURAL RESOURCE SYSTEM

• MARSHLANDS PROVIDE THE FOLLOWING

• HABITAT

• NUTRIENTS

• BUFFERS AGAINST FLOODING AND EROSION

• DISSEMINATE POLLUTANTS

• NATURAL RECREATIONAL RESOURCE

• ECONOMIC RESOURCE

NATURAL FUNCTIONING OPEN SPACE (NFOS)

ANFOS / ASFHA = RNFOS

RNFOS * 350 = NATURAL FUNCTIONING OPEN SPACE POINTS

Natural Functioning Open Space350 Points

NFOS1 (170 Points) aNFOS rNFOS1 = (aNFOS1/aSFHA) NFOS = (rNFOS1*170)

Beach 200.1 0.113 19.24Dunes 108.6 0.061 10.44

Jaycee Park 9.4 0.005 0.90Coastal Marshlands 502.25 0.284 48.29

Buza Property 0.6 0.000 0.06Sallie Pearce 7.4 0.004 0.71

Buckley Property - Hwy 80 16.4 0.009 1.58

NFOS 3 (50 Points) aNFOS3 rNFOS3 = (aNFOS3/aSFHA) NFOS3 = (rNFOS3*50)

Critical habitit for piping plover (portion of the beach)

199 0.113 5.63NFOS1

82 Points

ONGOING COASTAL INITIATIVES THAT BENEFIT NFIP AND CRS PROGRAMS

National Flood Insurance Program Community Rating SystemAugust 28, 2014

COASTAL STORMWATER SUPPLEMENT (CSS)

CSS ELEMENTS

• ORDINANCE

• GREEN INFRASTRUCTURE/LOW IMPACT DEVELOPMENT FOCUS

• STORMWATER RUNOFF VOLUME/WQ CONTROL

• DRAINAGE STRUCTURE MAINTENANCE AGREEMENTS

• REQUIRED FOR NPDES MS4 COMMUNITIES

• WATER COURSE PROTECTION?

CRS ACTIVITY 450 STORMWATER REGULATION (MAX 755)

Stormwater management regulations 380Size of development regulated 110Managing stormwater volume 225Public maintenance regulation 20Low impact development 25Watershed master plan 315Erosion and sedimentation control 40Water quality regulations 20

http://epd.georgia.gov/georgia-epd-coastal-stormwater-supplement-stormwater-management-manual

COUNTY HAZARD MITIGATION PLANNING

COASTAL PLANNING INITIATIVES

• COASTAL HAZARD PLANS DUE FOR AN UPDATE 2014 – 2016.

• GEORGIA COASTAL HAZARDS COMMUNITY OF PRACTICE

• CHATHAM COUNTY NATURAL RESOURCES PROTECTION COMMISSION

• CRC COASTAL HAZARD MITIGATION PLAN

ACTIVITY 510 - FLOODPLAIN MANAGEMENT

Floodplain management plan 382

10- Step ProcessRepetitive loss area analyses 140Natural floodplain functions plan 100www.CRSresources.org/500

COASTAL FLOOD MAP PROJECT

• INLAND PHASE COMPLETED

• COASTAL PHASE IN PROGRESS, TO BE COMPLETED 2015/2106

• PARTNERS: FEMA, GA DNR, NOAA, CRC, LOCAL GOVERNMENT

• LOCAL CONTRIBUTIONS OF RESOURCES/LOCAL STUDIES

ACTIVITY 410 FLOODPLAIN MAPPING

New study 290State review bonus 60Leverage for non-FEMA cost sharing (multiplier) %Higher study standards 160Floodway standard 110

ONLINE MAPPING RESOURCES

ONLINE SERVICES• THE GEORGIA COASTAL HAZARDS

PORTAL

• HTTP://GCHP.SKIO.USG.EDU/

• US FISH AND WILDLIFE GEOSPATIAL SERVICES

• HTTP://WWW.FWS.GOV/GIS/DATA/NATIONAL/

CRS ACTIVITY POINTS AVAILABLE

Activity 420 (Open Space Preservation) c420

2020

Preserved open space OSP145

0Deed restriction on OSP parcel DR 50Natural functions open space NFOS 350Natural shoreline protection NSP 120

Activity 320 Map Information Service 901. Basic FIRM information 302. LiMWA/floodway info/CBRS area 203. Other flood problems not shown on FIRM 204. Flood depth data 205. Special flood-related hazards 206. Historical flood information 207. Natural floodplain functions 20

DRAINAGE SYSTEM OPERATION & MAINTENANCE

COASTAL/STATEWIDE PROGRAMS

• SPECIAL OPTION LOCAL SALES TAX

• NPDES PERMITS

• MS4 PHASE I & II

• WATERSHED PROTECTION PLANS

CRS ACTIVITIES

Activity 540 (Drainage System Maintenance) 570Channel debris removal 200Problem site maintenance 50Capital improvements program 70Stream dumping regulations 30Storage basin maintenance 120

OTHER INITIATIVES?WHAT’S HAPPENING IN YOUR COMMUNITY?

QUESTIONS?

ED DITOMMASO, AICP GISP(C) (912) 596-3407ED@ECOLOGICALPLANNING.NET

COURTNEY REICH, AICP(C) (912) 656-1316COURTNEY@ECOLOGICALPLANNING.NET

Ecological Planning Group, LLC7 East Congress Street, Suite 801Savannah, GA 31401www.ecologicalplanning.net