6-16-25 Commission Workshop Adopted MinutesMINUTES
Commission Workshop Meeting
Monday, June 16, 2025 - 6:00 PM
City Hall, Commission Chamber
800 Seminole Road, Atlantic Beach, FL 32233
ATTENDANCE:
Present: Curtis Ford, Mayor - Seat 1 (At Large)
Bruce Bole, Commissioner - Seat 2 (District 1308)
Thomas Grant, Commissioner - Seat 3 (District 1307)
Candace Kelly, Commissioner - Seat 4 (District 1306)
Jessica Ring, Commissioner - Seat 5 (District 1312)
Also Present: William B. Killingsworth, City Manager (CM)
Donna Bartle, City Clerk (CC)
Ladayija Nichols, Deputy City Clerk (DCC)
Amanda Askew, Neighborhoods Department Dir. (NDD)
Abrielle Genest, Principal Planner (PP)
CALL TO ORDER
Mayor Ford called the meeting to order at 6:00 PM.
1. UPDATES TO THE VULNERABILITY ASSESSMENT AND ADAPTATION PLAN
NDD Askew and PP Genest presented as detailed in the agenda packet, in addition to a
PowerPoint (which is attached hereto and made part of this official record as Attachment A)
and answered questions from the Commission.
Mayor Ford requested information on what surrounding cities, such as Neptune Beach and
Jacksonville Beach, are doing regarding their vulnerability assessments.
Commissioner Bole expressed the need for the City to publicize vulnerable areas to inform the
community effectively.
6-16-25 Attachment A
2. PUBLIC COMMENT
The following speakers provided their comments:
Sarah Boren shared two motions from ESC's recent meeting: ESC recommended integrating
the master stormwater management plan into the vulnerability assessment and adaptation plan.
ESC recommended waiting for the completion of the master stormwater management plan
before changing Chapter 24 and removing the 400 -foot trigger for on-site retention in residential
areas.
Commission Workshop
June 16, 2025
ADJOURNMENT
The meeting adjourned at 6:51 PM
Attest:
Donna L. Bartle, City Clerk
Date Approved: (/�3,2
Curbs Ford, Mayor
Commission Workshop
June 16, 2025
Coastal Vulnerability
Assessment &
Adaptation Plan Update
Commission Workshop Meeting
June 16, 2025 _4
'
AW
Attachment A to
6-16-25 Minutes
Nroject uoals
ably with risk when measuring hazard impacts. NOAA provides a useful
definition of vulnerabilit that informs the follow-on actions described
later in this chapter (2010):
"The potential for loss of or harm/damage to exposed assets largely
due to complex interactions among natural processes, land use deci-
sions, and community resilience."
Why do you need a
Vulnerability Assessment?
A Vulnerability Assessment
helps a community determine
which structural and social
assets are likely to be impacted
by future coastal flooding and
sea level rise.
Fla. Dept. of Environment Protection = FDEP
Sea Level Rise = SLR
Vulnerability Assessment = VA 3
Attachment A to
6-16-25 Minutes
Grant Funding
• Flood Mapping Updates
• Marsh Baseline Survey
• Public Meetings
• Adaptation Plan Updates
Gommunlry OnvolofXnelit Block OratN - ���
Mttgathon ICOBG-MITI
P�EPAj?r
O� 'Oh
O
Attachment A to
6-16-25 Minutes
F.S. 380.093 Overview
• Must encompass entire county or municipality.
• Must include all "critical assets" owned or maintained by applicant.
• Include depth of future high tide flooding.
• Include depth of current and future storm surge flooding (100 -year
event).
• Include depth of current and future rainfall -induced flooding (100 -
year & 500 -year events).
• Use National Oceanic and Atmospheric Administration's (NOAA) 2022
intermediate -low and intermediate sea -level -rise projections.
• Include 2050 and 2080 planning horizons.
0
100% Grant Funded by the Florida
Resilient Coastlines Program
Completed in June 2019 and Updated in
April 2021
100 -Year Storm Surge and Rainfall Driven
Flooding for 2044, 2069, and 2119
Nuisance Flooding (MHHW)
Used NOAA 2017 Intermediate -High Sea -
Level -Rise Projections
Completed Prior to F.S. 380.093 and
Resilient Florida Grant Program
Guidelines/Requirements (RFGP)
��'• /' *' may_, •�
I
Attachment A to
6-16-25 Minutes
Major Differences
2019 and 2021 VA
• 20441 2069 and 2119 planning
horizons
• Intermediate -high NOAA 2017
SLR projections
• Critical asset inventory
• 2007 LiDAR imagery
2025 Update
2050 and 2080 planning horizons
• Intermediate -low and
intermediate NOAA 2022SLR
projections
• Expanded critical asset inventory
• 2018 LiDAR imagery
11
Attachment A to
6-16-25 Minutes
Data Collection: Critical Community Assets
Asset Type
Affordable Public Housing
10
Airports
0
Bridges
0
Bus Terminals
0
Colleges and Universities
1
Communications Facilities
0
Community Centers
4
Conservation Lands
5
Correctional Facilities
0
Day Cares
2
Disaster Debris Management Sites
3
Disaster Recovery Centers
1
Drinking Water Facilities
0
Electric Production and Supply
Facilities
0
Emergency Medical Service Facilities
0
Emergency Operation Centers
1
Fire Stations
1
Health Care Facilities
10
Historical and Cultural Assets
1
Hospitals
0
Law Enforcement Facilities
1
Lift Stations
33
Asset Type
Local Government Facilities
3
Logistical Staging Areas
2
Major Roadways
83
Marinas
0
Military Installations
0
Parks
16
Ports
0
Radio Communications Towers
4
Rail Facilities
0
Railroad Bridges
0
Risk Shelter Inventory
1
Schools
3
Shorelines
1
Solid and Hazardous Waste Facilities
2
State Government Facilities
0
Stormwater Treatment Facilities and Pump
Stations
0
Surface Waters
38
Wastewater Treatment Facilities and Lift
Stations
3
Water Utility Conveyance Systems
0
Wetlands
109
W
Attachment A to
6.2
n tsaCollection : Critical
Community Assets
• Mined from County,
City,State and
Federal data
sources.
• Inventory includes
-350 critical
community assets.
00
Pioneer Dr
r y
■
AtA ■
hes
Ass— 0
20th �.
1� 14th Sc
I
d
I
1 Selva Marina v
1
Cour& Club
,t
_ t1
1
11th St
�nner RQ
1
14th
I - �,
w
• 1
I r
3 N f p
A N
1
a
I
d
r
Or,.,.v,.v c�..rv. cww.
csm.�.mn. r.�..
• rou,,..i cve.� a..r. F/o/
N
•^v.a
O«..n. c,,.....«..
Q u.....
e-^.-:fve+.., A-6
W + 0 1,250 2.500
E �—
..i.. rte.
s.... w.�.
INM wn.,e,
1:30,000
tr•rt
Attachment A to
6-16-25 Minutes
upciated Flood Mapping: Requirements
• Existing, 2050, and 2080 planning horizons
• Intermediate -low and Intermediate Sea -Level -Rise (SLR)
Projections
• Existing and future high tide flooding
• Number of expected tidal flood days
• Use existing storm surge data
• Include 100 -year flood event ata minimum
• Include 100 -year and 500 -year rainfall event
• Vary future boundary conditions based on SLR projections
11
Attachment A to
6-16-25 Minutes
Updated Flood Mapping: Scenarios
20 scenarios are
required by State
Statute.
City also chose to
map combined
surge and rainfall
flooding for the
100 -year event.
Flooding Type MHHW+2' 100 -Year 500 -Year
I IUCI /JUi IIIy-VQy
1 IW%JU1116
Existing
X
X
X
2050 Int -Low
X
X
X
2080 Int
X
X
X
2080 Int -Low
X
X
X
2080 Int
X
X
X
Kainraii
inoucea riooamg
Existing
X
X
2050 Int -Low
X
X
2080 Int
X
X
2080 Int -Low
X
X
2080 Int
X
X
Storm Suree Floodine
Existing
2050 Int -Low
2080 Int
2080 Int -Low
2080 Int
Notes: Jra— highlighted cells indicate required scenarios.
MHHW = Mean Higher High Water
12
Attachment A to
6-16-25 Minutes
Sea -Level -Rise Projections - 2050
Sea Level Data and Projections: Mayport (Bar Pilots Dock). FL (8720218) -
NOAA Tide Gauge
Feet above North American Vertical Datum of 1988
(Datum accepted Nov 2. 2020)
2020
Click on legend items to hide./show them in the plot
MHHW - 5 -Year Moving Average
MHHW - NOAA et al. 2022 - High
• MHHW - NOAA et al. 2022 - Intermediate
• MHHW - NOAA et al. 2022 - Low
MHHW - 19 -Year Moving Average
• MHHW - NOAA et al. 2022 - Intermediate -High
• MHHW - NOAA et al. 2022 - Intermediate -Low
2140
14
MHHW Values
5
. MHHW - NOAAet al2022 - igh: 3.64 ft.
• MHHW - NO et al 2022 - Intermediate -Hi 3.44 ft.
'
4
• MHHW - NOAA et al 2022 - Intermedial 1.24 ft „ ;�;
.....
« • • ' •
• ' • • ' • • . • • • • • .
............ • • • • I . MHHW - et al 2022 - Intermediate -Lo•. 3.11 tL
l
INOAA
! • MHHW - NOAA et al. 2022 - Low. 2.95 ft.
0 l
7990 2000 2010 2020 2030 2040 2060
2070
2080
2090 2100
2020
Click on legend items to hide./show them in the plot
MHHW - 5 -Year Moving Average
MHHW - NOAA et al. 2022 - High
• MHHW - NOAA et al. 2022 - Intermediate
• MHHW - NOAA et al. 2022 - Low
MHHW - 19 -Year Moving Average
• MHHW - NOAA et al. 2022 - Intermediate -High
• MHHW - NOAA et al. 2022 - Intermediate -Low
2140
14
Attachment A to
6-16-25 Minutes
Sea -Level -Rise Projections -2080
Sea Level Data and Projections: Mayport (Bar Pilots Dock), FL (8720218)
NOAA Tide Gauge
Feet above North American Vertical Datum of 198'• � •
2080
(Datum accepted Nov 2, 2020) 01"t''T I I 111'*' 1 %I- I.. - -
e
• MHHW - NOAA et al 2022 - High6. 6 ft.
.r
6 . MHHW - NOAA et a1 2022 - Intermediate -High 5. ft.
. MHHW - NOAA et al 2022 - Intermediat 4.46 ft •
• MHHW - NOAA et a1 2022 - Intermediate -Lo ti 3.77 (L , ......
• , �„ 1 1 1 1 1 1 1 1� l— MHHW - NOAA et al 2022 - Low 3.34 fL f
0
1990 2000 201 2020 Z03C 2040 2050 2060 2070 y2C8C 2090 2100
Click on legend items to hide%show them in the plot
MHHW - 5 -Year Moving Average
* MHHW - NOAA et al. 2022 - High
.• MHHW - NOAA et al. 2022 - Intermediate
MHHW - NOAA et al. 2022 - Low
MHHW - 19 -Year Moving Average
MHHW - NOAA et al. 2022 - Intermediate -High
MHHW - NOAA et al. 2022 - Intermediate -Low
_<<, 2140
Attachment A to
6-16-25 Minutes
Modeling/Mapping Approaches
• Use City's Existing Stormwater Model
• 100- and 500-year/24-Hour Design Storm Events
• Modify Rainfall Depths for Future Conditions
• Modify Boundary Conditions for SLR
• Modify Runoff Parameters for Future Growth
• Use City's Modified FEMA Model
• Adjust Stillwater Elevations (SWELs) to Account for SLR
• Add Wave Action
• MHHW Elevation + 2 -feet
16
Attachment A to
6-16-25 Minutes
100-Year/2050/Int Rainfall Flooding
17
Attachment A to
6-16-25 Minutes
100-Year/2050/Int Storm Surge Flooding
Attachment A to
6-16-25 Minutes
100-Yr/2050/Int Combined Flooding
Legend
Combined Inundation - 2050
Intermediate 100YR/24HR
Flood Depth (ft)
City Limit
ASSISI /
SeIh
Count
LLLL _ ®•d
r — — — — — — —Ismm 1
ill
1 • " tI 1
1 ?
— y Rd
St
h
r ,
o` �a \
19
Attachment A to
6-16-25 Minutes
Comparison to Previous Results
Key Differences
■ 2007 vs. 2018 FDEM LiDAR for
Inundation Mapping
■ 2044 Intermediate -High
N OAA 2017 vs. 2050
Intermediate NOAA 2022 =
Slightly Reduced Surge
Inundation Extent
■ Rainfall Change Factors Not
Used Previously = Expanded
Rainfall Inundation Extent
20
Attachment A to
6-16-25 Minutes
Marsh
Baseline Survey
• Monitor marsh extents over time to quantify impacts
from sea -level -rise.
• The City's
marsh provides
critical
habitat as well as flood
protection
during tropical
storms
and hurricanes.
21
Attachment A to
6-16-25 Minutes
Marsh
Baseline Survey
Mapped 6 Primary Habitats
■ Water - 164 ac.
■ Juncus Gerardii - 94 ac.
■ Saltgrass - 2 ac.
■ Spartina - 126 ac.
■ )uncus and Spartina Mix - 56
ac.
■ Wooded / Non -Marsh Grass
Areas - 130 ac.
Attachment A to
6-16-25 Minutes
Adaptation Plan Update
• Identify goals and strategies to best minimize risks and
establish a process to implement those strategies
• Used updated modeling from VA to identify the
exposure and sensitivity of critical assets
• Expanded adaptation strategies for focus areas
Attachment A to
6-16-25 Minutes
rocus Areas
• No changes
• Proposed raising road segments above the projected
flooding and surge areas
• Proposed backflow prevention systems and stormwater
pond locations along Hopkins Creek and Sherman Creek
Attachment A to
6-16-25 Minutes
Focus Areas
Attachment A to
6-16-25 Minutes
Next Steps
■ Complete the Vulnerability Assessment and
Adaptation Plan updates
■ Public Meeting #2 - June 25, 2025 at 5:30
p.m.
■ Bring to Commission for approval on July 14,
2025
27
Attachment A to
6-16-25 Minutes
Questions?
28