2022_MDBB_Miami_Shores_Briefing (002)RE-INITIATION OF THE MIAMI-DADE
BACK BAY COASTAL STORM RISK
MANAGEMENT FEASIBILITY STUDY
MIAMI SHORES VILLAGE BRIEFING
Jim Murley
Chief Resilience Officer
Miami-Dade County
Michelle Hamor - Chief, Planning and Policy Branch
Faraz Ahmed, Planning Team Lead
Abbe Preddy, Project Manager
U.S. Army Corps of Engineers, Norfolk District
1 November 2022
https://www.saj.usace.army.mil/MiamiDadeBackBayCSRMFeasibilityStudy/
2MIAMI-DADE BACK BAY CSRM FEASIBILITY STUDY:
PAST TO PRESENT
3MIAMI-DADE BACK BAY CSRM FEASIBILITY STUDY:
PAST TO PRESENT
Milestones Date
Feasibility Study Began Oct 2018
Tentatively Selected Plan Jan 2020
Release of Draft Integrated Feasibility Report and Programmatic EIS (60-day
comment period)
Jun 2020
Feasibility Study Paused and Formal Request received from Miami-Dade
County to extend study timeline beyond 3-years and $3 million
Aug 2021
3-year Study Timeline expired Oct 2021
Subsequent formal request from Miami-Dade County Mayor Daniella Levine
Cava to ASA(CW)
Dec 2021
Time and Funding Request approved by Assistant Secretary of the Army for
Civil Works (ASA(CW))
Aug 2022
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Study Purpose: To reduce coastal storm risk through the implementation of coastal storm risk
management (CSRM) measures designed to reduce potential damage caused by coastal storms,
including preventing loss of human life. This study is a response to the study authority (Public Law
84-71, June 15, 1955) and will develop and evaluate CSRM measures for Miami-Dade County.
Study Objectives:
Increase the resilience of Miami-Dade County to function effectively before, during, and after
coastal storm events by decreasing the vulnerability of critical infrastructure to flooding damages
from sea level rise and storm surge.
Reduce economic damages to structures in communities vulnerable to severe flooding damages
from sea level rise and storm surge.
Incorporate natural and nature-based features (NNBFs) to reduce flood damages and
complement the recommended nonstructural and structural measures
Seven strategic focus areas were selected: Arch Creek, Aventura, Cutler Bay, Little River, Miami
River, North Beach, and South Beach. Critical infrastructure included throughout the County.
STUDY BACKGROUND AND OBJECTIVES
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RECOMMENDED PLAN (2021)
Structural Measures: Storm surge barriers with
associated floodwalls, pump stations, and tide gates
at Biscayne Canal, Little River, Miami River, Coral
Gables Waterway and Snapper Creek Canal.
Nonstructural Measures: Elevating residential
homes and floodproofing non-residential buildings
Dry floodproofing critical infrastructure such as
fire and police stations, medical facilities, evacuation
centers, potable water facilities, and pump stations
(250 locations)
Natural and Nature-Based Features (NNBFs):
Mangrove and coastal wetland restoration at Cutler
Bay
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• General concerns with proposed structural measures: aesthetic concerns;
environmental harm to Biscayne Bay; equity concerns and “winners and
losers” associated with proposed structural measures; floodwalls would
bisect communities, potential impacts to navigation and recreational access
• Limited inclusion of NNBFs and green infrastructure
• A need to assess flood risk more holistically and consider the existing
Central and Southern Florida Flood Control System
• Critical Infrastructure List should be expanded
STAKEHOLDER COMMENTS
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RE-INITIATING THE MIAMI-DADE BACK BAY CSRM
FEASIBILITY STUDY: TWO PARTS
PART 1: 12 months
Objective: In coordination with Miami-Dade County, develop an additional alternative that
supports the study objectives and sufficiently compares in performance to the
Recommended Plan. The alternative would integrate and refine measures of the
Recommended Plan that received broad support and modify/replace measures that raised
local concerns.
The alternative may include the following:
•Hybrid structural/NNBF measures to reduce coastal storm surge risk at Miami River; more
NNBFs in general
• Nonstructural measures in Biscayne Canal and Little River in place of structural measures (i.e.
surge barrier/floodwall)
• An evaluation of additional areas of the community where nonstructural measures could be
incorporated within the existing focus areas
• Additional critical infrastructure
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Milestones Date
Public Meeting (Virtual)Oct 12, 2022
Briefing to City of Coral Gables Oct 13, 2022
Briefing to Biscayne Bay Water Management Advisory Board Oct 25, 2022
USACE Leadership Meeting with Mayor Cava Oct 26, 2022
Briefing to Village of Miami Shores Nov 1, 2022
Charrette Overview (Virtual)Nov 2, 2022
Charrette in Miami-Dade County Nov 14-18, 2022
Monthly Interagency Meetings Sept 2022 - July 2023
Quarterly Public Updates Jan 2023 – Jul 2023
12-month check-in with ASA(CW)Aug 3, 2023
RE-INITIATING THE MIAMI-DADE BACK BAY CSRM
FEASIBILITY STUDY: THE NEXT 12-MONTHS
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DRAFT CHARRETTE AGENDA
NOVEMBER 14 - 18
Monday Tuesday Wednesday Thursday Friday
Morning Site Visit -
Miami River
Site Visit - Miami
Shores
Focus: Natural and
Nature-Based Features -
Cutler Bay
Wrap-up Meeting
and next actions
(Hybrid)
Afternoon
Kick-off Meeting
(Hybrid),
Leadership
Opening
Remarks
Charrette:
Miami River
Focused
Charrette:
Nonstructural
Charrette: Natural and
Nature-Based Features
Evening Public Meeting
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Milestones Date
12-month check-in with ASA(CW)Aug 3, 2023
Feasibility Study Kick-off, additional analysis, public scoping, etc.TBD
Monthly Interagency Meetings TBD
Tentatively Selected Plan TBD
Published Draft Report TBD
Agency Decision Milestone TBD
Published Final Report TBD
Chiefs Report Aug 3, 2027
RE-INITIATING THE MIAMI-DADE BACK BAY CSRM
FEASIBILITY STUDY: PART 2
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COORDINATION EFFORTS
•USACE Engineering With Nature Program
• Engineering With Nature ® is the intentional alignment
of natural and engineering processes to efficiently and sustainably deliver economic, environmental,
and social benefits through collaboration.
•Coordination with Other USACE Studies/Projects
• Miami-Dade CSRM Study (Beach)
• Biscayne Bay and Southeastern Everglades Ecosystem Restoration (BBSEER) Project
• Biscayne Bay Coastal Wetlands (BBCW)
• Miami Harbor Navigation Improvement Study
• Central & South Florida (C&SF) Flood Resiliency Study
•Public Engagement
• Coordinating with Miami-Dade County over coming weeks/months for joint communication.
• Website update and draft public comment tool https://arcg.is/0ub0Cf
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• Email:MDBB-CSRMStudy@usace.army.mil
• Written Comments:
Environmental Analysis Section, Norfolk District
803 Front Street
Norfolk, Virginia 23510
• For any accessibility issues that prevent written comments,please call (757) 201-7728.
• Project Documents are Located:
https://www.saj.usace.army.mil/MiamiDadeBackBayCSRMFeasibilityStudy/
PUBLIC COMMENT OPTIONS