south atlantic coastal study quarterly webinar

South Atlantic Coastal StudyQuarterly Webinar

CONNECTION INFORMATION:

Webinar:

https://attendee.gotowebinar.com/register/8910897840115176205

Webinar #4

January 26th, 2021

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Shared Vision Statement

"The SACS vision is to provide a common understanding of risk from coastal storms

and sea level rise to support resilient communities and habitats. This collaborative

effort will leverage stakeholders’ actions to plan and implement cohesive coastal

storm risk management strategies along the South Atlantic and Gulf Coast shorelines,

including the territories of Puerto Rico and the U.S. Virgin Islands."

Hazard + Performance + Exposure + Vulnerability + Consequences = Risk

Figure 1: Risk Conceptualized (ER 1105-2-101)

Meeting Purpose

Brief progress update since the last Quarterly Webinar in October 2020

Technical spotlight: Sand Availability and Needs Determination (SAND), Regional Sediment Management Optimization, and Geoportal products

Looking ahead

Q&A via chat function (15-20 min)

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SACS Quarterly Update Webinar: Agenda

SACS Overview

• Introduction

• Program Status/ Overview

• 2021 Snapshot

• FAAS Update

SACS Products Technical Overview

• Regional Sediment Management (RSM)

• Sand Availability and Needs Determination (SAND)

• Dredged Material Management Areas (DMMA)

Questions & Discussion

Next Steps and Closing Remarks

• Looking Ahead @ 2021

• Upcoming opportunities for engagement

• Questions

• Open Discussion

Geoportal

• SAND WebmappingApplications

• Navigating the Geoportal

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Command Center Team:

Pam Castens Regional Project Manager

Lisa Clark Outreach Lead

Idris Dobbs Economics Lead

Trevor Lancaster Geospatial Lead

Drew Condon Engineering Lead

Kristina May Environmental Lead

Clay McCoy Regional Sediment Management Lead

Matt Schrader Planning Lead

District Project Managers:

Brennan Dooley Wilmington District PM

Diane Perkins Charleston District PM

Jeffrey Schwindaman Savannah District PM

Ashleigh Fountain Jacksonville District PM

Meredith LaDart Mobile District PM

South Atlantic Coastal Study Team

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POLL - What type of organization do you represent?

Federal

Agency

State/Local

AgencyAcademia

OtherNon-Governmental

Agency

South Atlantic Coastal Study

Tribal

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POPULATION & INFRASTRUCTURE

HAZARDS

ENVIRONMENTAL & CULTURAL

WA

VEW

ATC

H III

AD

CIR

C/S

TWA

VE

CSTO

RM

CO

UPLE

RJO

INT

PR

OB

AB

ILIT

Y

USFWS; BON SECOUR NWR

RISK ASSESSMENTREGIONAL SEDIMENTMANAGEMENT (RSM)

OPTIMIZATION

COASTAL HAZARDSSYSTEM (CHS)

GEOPORTALMEASURES & COSTS

LIBRARY

Assessment based on exposure of population and infrastructure, environmental and cultural resources, and social vulnerability to inundation hazards.

Identifies and quantifies total contribution of RSM principles to projects in the SACS study area that support long-term coastal resiliency.

Determines the need and availability of sediment to maintain beaches for the next 50 years.

Provides current and projected water elevation data for the study area.

Provides the public access to study datasets, products, and documentation.

Detailed list of Coastal Storm Risk Management (CSRM) measures and their costs developed to a screening level for use in USACE and stakeholder planning.

HABITAT AND ENVIRONMENT DATASETS

POPULATION INFRASTRUCTUREDATASETS

HAZARDDATASETS

FOCUS AREA DATA

DERIVEDPRODUCTS

REVETMENT (PROFILE VIEW)

BEACH NOURISHMENT

COASTAL PROGRAM GUIDE

STATE & TERRITORYAPPENDICES

PLANNING AID REPORT (U.S. FISH AND WILDLIFE SERVICE

[USFWS])

INSTITUTIONAL & OTHER BARRIERS ANALYSIS

FOCUS AREA ACTION STRATEGIES

Outreach and information package to help communities better leverage needed resources on a disaster-wide, statewide, or community-wide basis.

Specific information for each state and territory will be provided in stand-alone appendices to the main report.

Priority environmental areas will be identified using Tier 1 data, the USFWS Planning Aid Report, and stakeholder tools. Resiliency to coastal storms and sea level rise will be evaluated and measures to increase resiliency will be recommended.

Report of priority biological resource habitats in the South Atlantic region that are vulnerable to harm from coastal storms and sea level rise with a focus on areas used by federally listed species. Report will also include a description of risk to coastal national wildlife refuges.

Document identifies institutional and other barriers to providing comprehensive protection for affected coastal areas. The report will include information on the performance of existing federal CSRM projects and recommendations for improvement.

Focus area action strategies (FAAS) will use SACS products in combination with other resources to develop actionable risk reduction strategies with stakeholders. FAAS will serve as examples for how vulnerabilities in other high risk locations can be addressed.

VULNERABILITY ON THE OUTER BANKS

FLORIDA FEDERALCSRM PROJECTPOST-TROPICAL STORM FAY, 2008

TIER 1 ENVIRONMENTAL,

CULTURAL & HABITAT EXPOSURE

FLORIDA BEACH AFTER 1962 NOR’EASTER -WITHOUT FEDERAL CSRM PROJECT

SACS TIER 1 RISK ASSESSMENT https://sacs.maps.arcgis.com/apps/MapSeries/index.html?appid=c54beb5072a04632958f2373eb1151cf

SOUTH ATLANTIC REGION HURRICANES

PRIORITY ENVIRONMENTAL AREA

IDENTIFICATION

SAND AVAILABILTY & NEEDS DETERMINATION

(SAND)

AVAILABLE ON WEB PAGE AVAILABLE ON WEB PAGE

South Atlantic Coastal Study | Key Products

https://sacs.maps.arcgis.com/apps/MapSeries/index.html?appid=c54beb5072a04632958f2373eb1151cf

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Overview of ActivitiesReport

Milestone

2018 2019 2020 2021 2022

STAKEHOLDER

WORKSHOPS

AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

Vision 1 Vision 2 Focus Area MeetingsWorkshops

Complete

Complete

In-Progress

PR/USVI

Complete

STUDY SCOPE

TIER 1

MEASURES and

COST LIBRARY

CHSAtlantic GoMex Archival

RSM OPTIM

PPEs / IOB

STATE

APPENDICES

CompleteSAND

HAZUS/Tier II

ERA

Complete

MAIN REPORT Draft Final

GEOSPATIAL

ENVIRONMENTAL Draft Complete

Draft 1 complete

HAZUS State Dash.

Complete 60% 40%

Ongoing

FOCUS AREA WORKSHOPS

In-progress

Final Report Milestone

Draft complete Review in-progress

Review In-progress

Draft Final

D2 in progress

In-Progress Review

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2021 Snapshot

2021JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

REGIONAL PRODUCTS

FAAS/Appendix Refinement and Reviews

CHS:SA Public

Avail

CHS Validation Meeting

Final Draft IOB Report

Final IOB Report

STATE APPENDICES

Complete Draft FAAS and State/Territory

Appendices

Strategies/High risk

areas

DRAFT REPORTConcurrent Reviews

Final Measures and Cost Library REPORT

Final Environmental At-Risk Resource Technical Report

CHS:PR/USVI

Public Avail

CHS:GoMex

Public Avail

Rec Milestone

Report Milestone

MCL WEBAPP DEVELOPMENT

Final CPG Report

Prep Draft Report for ReleaseDraft Main Report/FAAS/Appendices Refinement and Review

Wrap-Up All Remaining CHS Activities

IPR

Stakeholder Coordination

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Virtual Communications

Newsletter Distribution

Stakeholders

South Atlantic Coastal Study - Outreach

Academia, 79

County, 170Federal, 405

State, 277Local, 128

NGO, 117

Tribal, 56

Other, 75

https://www.sad.usace.army.mil/SACS

1300+

Strong

✓ Quarterly Webinar #4

✓ Focus Area Workshops - Complete

✓ Military Installation Workshop - Complete

Email us [email protected]

https://www.sad.usace.army.mil/SACS

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FAAS Workshop Schedule

FAAS Workshops consisted of three webinars per focus area:

1. KICK-OFF

(90 MINS)

• Focus Area Details

• Shared Vision Statement for Focus Area

• Preparation for Strategy Development Workshop

2. STRATEGY DEVELOPMENT WORKSHOP

(3-4 HOURS)

• Questionnaire Feedback

• Technical Discussions

• Action Strategy Development

3. WRAP-UP

(90 MINS)

• Overview Action Strategy Feedback

• Action Strategy Prioritization & Evaluation

• Gather Input before Finalization

Completed in Aug/SeptCompleted in July 2020 Completed in Oct/Nov/Dec

436 stakeholders participating 319 stakeholders participating 392 stakeholders participating

SACS ProductsSand Availability and Needs Determination

2020 Regional Sediment Management Optimization Update

Dredged Material Management Area

Clay McCoy, PhD

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FOCUS: Regional Sediment Management Products

• Brief project descriptions:

– SAND – 50-Year Assessment

– 2020 RSM Optimization Update

– DMMA Beneficial Use and Offloading

• Why these projects?

– WRDA 2016, NACCS

– SACS goals, complementary products

– SAD coastal Navigation and Flood Risk Mgmt, RSM Center of Expertise

• Project overviews

– Methods

– Highlights/results

– Applications and next steps

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Sand Availability And Needs Determination (SAND)

COMPONENTS

– 50-Year Beach Sand Analysis

– First regional assessment of long-term beachfront sand needs

– 50-year sand needs for all beach projects

– Sand resources evaluated: offshore, RSM, DMMA

– 50-year sand balance and recommendations

DMMA Beneficial Use and Sediment Exchange Study

– Assessment of offloadableupland placement sites in SAD

Kings Bay DMMA

Beneficial Uses

St. Lucie County

Offshore Sand

Resources

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2020 RSM Optimization

• Analysis of >70 coastal NAV and Flood Risk Management projects in Division

– Beach and nearshore placement, open water dispersal, thin layer placement (TLP), env. habitat development

• Highlights value of RSM and includes ROM costs for all projects

• Informs budgets, promotes RSM implementation, lessons learned

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Why these products?

Section 1204, WRDA’16 Requirements

(1) Identify risks and vulnerabilities of

coastal areas within SAD AOR to

increased hurricane and storm damage as

a result of sea level rise (SLR).

(2) Conduct a comprehensive analysis of

current CSRM measures with an emphasis

on RSM practices to sustain/enhance

current storm protection.

(3) Recommend measures to address

coastal vulnerability of areas affected

by SLR.

(4) Develop a long-term strategy to

address increased hurricane/storm

damages resulting from SLR and identify

opportunities to enhance resiliency and

lower risks.

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Why these products?

(1) Provide a Common Operating Picture of Coastal Risk Provide decision-makers at all levels with a comprehensive and consistent regional assessment of coastal risk.

(2) Identify High-Risk Locations/Focus Current and Future Resources Enable resources to be focused on the most vulnerable areas.

(3) Identify and Assess Risk Reduction ActionsAssess actions that would reduce risk to vulnerable coastal populations.

(4) Promote and Support Resilient Coastal Communities Ensure a sustainable coastal landscape system, considering future sea level rise scenarios and climate change; Provide information to stakeholders to optimize existing efforts to reduce risk.

(5) Promote Sustainable Projects and Programs Develop and provide consistent foundational elements to support coastal studies and projects; Regionally manage projects through Regional Sediment Management and other opportunities.

(6) Leverage Supplemental Actions Multiple Federal supplemental studies and construction efforts funded by Public Law 115-123 will inform, and be informed by, the SACS.

SACS Goals

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SAND project overview: 50-year beach sand analysis

•Quantify long-term beach sand needs for region

Objective:

•Subject matter experts from all SAD districts

•12 state and federal agencies that manage coastal resources

•Taylor Engineering

Team:

•Final Report

•Databases: sand needs and sand resources, documents database

•Regional workshops

Products:

*All products available on SACS website

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• Vetting the project

• Stakeholder engagements:

– Seven stakeholder workshops

– Stakeholder online data input

– Stakeholder data review period

• 12 coastal management agencies:

– Quarterly and situational meetings

– Final report reviews

– HUGE role in data acquisition and review

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Norriego Point RSM

Destin, FL

Beach Nourishment

Duck, NCPhotograph– The Town of Duck


• Sand Needs – Beach nourishment projects with a history of nourishments or studies for future work.

• 50 yr Sand Needs – An estimated volume based on the average annualized fill volume of past nourishments forecast over 50 years. In the absence of past nourishments, this is estimated from studies and permits.

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50 Yr Sand Needs Calculation

NOURISHMENT

VOLUMESYEARS

ESTIMATED ANNUAL

NEED

ESTIMATED CURRENT

SAND NEED

ESTIMATED 50-

YEAR SAND NEED

(2020-2070)

V1,V2,…VN Y1,Y2,…YN 𝑅 =(𝑉1+𝑉2 +⋯𝑉𝑁)/𝑁

(𝑌1 − 𝑌𝑁)/(𝑁 − 1)𝐶 = (2020 − 𝑌1) × 𝑅 𝐹 = 𝐶 + (𝑅 × 50)

• If two nourishment events occurred, then the Erosion Rate (R) is given as R = V1/(Y1 - Y2).

• If one nourishment or no nourishments occurred, then a published erosion rate is used.


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NOURISHMENT

VOLUMESYEARS ESTIMATED ANNUAL NEED ESTIMATED CURRENT SAND NEED

ESTIMATED 50-YEAR SAND

NEED (2020-2070)

V1,V2,…VN Y1,Y2,…YN 𝑅 =(𝑉1+𝑉2 +⋯𝑉𝑁)/𝑁

(𝑌1 − 𝑌𝑁)/(𝑁 − 1)𝐶 = (2020 − 𝑌1) × 𝑅 𝐹 = 𝐶 + (𝑅 × 50)

St Johns Shore Protection Project

St Augustine Beach, FLPhotograph– The St. Augustine Record


• Small emergency nourishments can skew the data

• Nourishments with a regular periodicity are preferred

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Borrow Area CategoriesCategory Confidence Description

Proven 90%Resource areas with beach-quality sand whose thickness and lateral extent have been fully

determined through design-level geotechnical data and in most cases are permitted.

Potential 70%

Resource areas with beach-quality sand whose existence has been verified through

preliminary geotechnical and geophysical data (with vibracores approximately one mile

apart). Thickness and/or lateral extent has been preliminarily determined.

Unverified Pluscan vary from

5% - 30%*

Resource areas hypothesized to exist on the basis of geophysical evidence (seismic

profiles, bathymetry, or side scan sonar) and at least one geotechnical core or surficial

samples verifying beach-quality sand.

Unverified 0%Resource areas hypothesized to exist on the basis of indirect evidence for the presence of

beach-quality sand.

Unusable 0%

Unusable for one or more of the following reasons:

1. All beach-compatible material has been removed from the area prior to the SAND Study,

2. The Sand source is inaccessible due to current conditions.

3. Area was investigated and the presence of non-beach quality material throughout the

area was verified.

*Confidence level for Unverified Plus borrow areas varies based on the density of the available geophysical and geotechnical data. This study provides

the estimated volumes of Unverified Plus borrow areas, but considers them as non-volume contributing for the summary tables.


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Ft. Pierce Beach Nourishment

Ft. Pierce, FL


Important Assumptions

• RSM Source 50 Year Volume estimates assume that the renewable sand source will continue filling at the same historical rate, calculated based on average dredge interval and average dredge volume per project

• Offshore Borrow Area volumes do not account for buffers required for:

– Hardbottom habitat

– Cultural resources

– Unexploded ordnance

– Dredge location constraints

• Calculations based on currently or nearly permitted projects as of summer 2020

• 50 Year Sand Needs are multiplied by 55% contingency: – 10% - 30% borrow area inefficiencies (sand left in the borrow area)

– 5% - 15% other dredging losses (dig-to-place loss)

– 10% - 25% future project performance, including sea level rise impacts

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Highlights:

• Regional, state, county-level maps: project and sand resources

• State, county, project-level tables

– Volume requirement

– Available sand volumes

– 50-year sand balance

• Databases and web app

• Recommendations

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Highlights:







• Recommendations

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Highlights:







• Recommendations

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•Coordinate with coastal management community, industry, and stakeholders to support R&D, technology, and techniques to maximize efficiency of resources

OVERARCHING THEMES

•Develop prioritization of sand needs and strategies to address needs

• Keep database updated

- Only useful if accurate

- Encourages interagency collaboration

- Supports education, outreach, and training

- Keeps topic visible to decision makers

• Focus on Unverified Plus sites for areas with sand deficits

•Identify areas to increase efficiencies to maximize use of available resources• 55% contingency: borrow area inefficiencies, dredging losses, future project performance

including SLR impacts

• Utilize regulatory flexibility (nearshore placement, beneficial use placement)


Highlights:







• Recommendations

ACTIONABLE ITEMS

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Example: Frying Pan Shoals Technical Workshop

Hosted by: Bureau of Ocean Energy Management, 13-16 Oct

https://usace1.webex.com/meet/clay.a.mccoy

SAND Applications

Resource for anyone involved in beachfront management in the southeast and beyond!

• Sand searches

• Feasibility studies

• Environmental assessments

• Long-term resource management and regional planning

QUESTIONS

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2020 RSM Optimization Update Overview

• Define RSM practices in SAD and promote more efficient program execution based on RSM principles.

Objective:

• Subject matter experts from all SAD districts

Team:

• Final Report

Products:

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Update of 2016 RSM Optimization Pilot that focused on Value of RSM

• Coupling NAV and FRM projects

• Savings from reduced mobilizations, executing one project instead of two

• 2016:

– $97 M in annual RSM value in SAD

– Effective with BU of beach sand but need to improve BU of other types of sediments

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Highlights:

• Inventory of all major RSM projects and techniques executed in SAD

• Advancements over the past several years

• Updated volumes, costs, and value data for all projects

• Document high value opportunities

• Recommendations

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Highlights:





• Recommendations

GA AIWW: Jekyll Creek Thin Layer Placement/Open Water Dispersal

Charleston Harbor: Artificial Reefs Jacksonville Harbor: Salt Marsh Restoration

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Highlights:





• Recommendations

Project Annual RSM Value

Charleston Harbor $37.2 M

Mobile Harbor $13.2 M

Tampa Harbor $5.3 M

Folly Beach-Folly River $5.1 M

Kings Bay - Nassau County $4.5 M

St. Augustine Inlet - St. Johns County $4.1 M

Baker's Haulover $3.9 M

Wilmington Harbor $3.8 M

Morehead City Harbor $2.8 M

Fort Myers Inlet $2.3 M

Folly River – Folly Beach Example

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Sarasota County (beach placement/inlets/CBRA): $2.6 M,

completed!

Charleston Harbor jetty (nearshore placement): $3 M,

contract awarded!


Highlights:





• Recommendations

– Expand RSM strategies across region and implement high value opportunities

– Nearshore placement

– Coastal Barrier Resources Act (CBRA) opportunities

Morehead City (nearshore placement): $6 M

Savannah Harbor – Tybee Island (beach placement): $1.1 M

QUESTIONS

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SAND project overview: DMMA Beneficial Use and Offloading

•Promote RSM best practices for managing DMMAs

Objective:

•Subject matter experts from all SAD districts

•Taylor Engineering

Team:

•Final Report

•DMMA Beneficial Use and Offloading database

Products:

*All products available on SACS website

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SAND project details: DMMA Beneficial Use and Offloading

• Coordination with Taylor Engineering and district NAV teams

• Data sources: district input, available reports/databases

• “OFFLOADABLE DMMA”: Upland, confined, accessible by road or barge, with limited site restrictions, and evaluated by USACE as having potential for offloading.

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Highlights:

• Overview of offloading and beneficial use concepts

• Beneficial use flowchart including uses by sediment type

• Offloading costs: beneficial use categories, transportation

• DMMA maps and summary tables

• Database and web app

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Highlights:






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• Highlights:






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Highlights:






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Next steps:

• Build on successes and identify opportunities

• Northeast Florida RSM: A Guide to Using Dredged Material for Estuarine Restoration

• Continue collaboration with partners and stakeholders

QUESTIONS

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Looking Ahead

Next 3 months and beyond

FEB-OCT 2021: Report Preparation and Refinement

APR 2021: Coastal Hazard System Available for

Puerto Rico and USVI

APR 2021: Next Quarterly Webinar- Environmental

Vulnerability and At-Risk Resource

Analysis

JUN 2021: CHS available for South Atlantic

AUG 2021: CHA available for Gulf of Mexico

OCT 2021: Draft Report

Questions & Discussion

4949

Thank You

ADDITIONAL INFORMATION

https://www.sad.usace.army.mil/SACS/

OUTREACH

[email protected]

Command Center Team:

Pam Castens – Regional Project [email protected]

Lisa Clark – Outreach [email protected]

Idris Dobbs – Economics [email protected]

Trevor Lancaster – Geospatial [email protected]

Drew Condon– Engineering [email protected]

Kristina May – Environmental [email protected]

Clay McCoy – RSM [email protected]

Matt Schrader – Planning [email protected]

District Project Managers:

Brennan Dooley– Wilmington District [email protected]

Diane Perkins – Charleston District [email protected]

Jeffrey Schwindaman – Savannah District [email protected]

Ashleigh Fountain – Jacksonville District [email protected]

Meredith LaDart – Mobile District [email protected]

https://www.sad.usace.army.mil/SACS/

mailto:[email protected]














south atlantic coastal study quarterly webinar

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