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Building Resilience to Coastal Hazards and Climate Change in Hawaii

April 2019

From May 2016 until April 2019, the Hawaii Department of Land and Natural Resources and the Office of Planning partnered with the University of Hawaii Sea Grant College Program to create three tools that support adaptation at the local level: an interactive data mapthe Hawaii Sea-Level Rise Viewer, and two guidance documentsIntegrating Coastal Hazards and Sea-Level Rise Resilience in Community Planning and Guidance for Disaster Recovery Preparedness in Hawaii. Much of Hawaii’s population and development exist on low-lying coastal plains that are vulnerable to erosion, flooding, and inundation. Building on the state’s 2017 Hawaii Sea Level Rise Vulnerability and Adaptation Report, the complementary tools are aimed at helping communities better prepare for future sea-level rise and other climate change impacts.

Resource Category: Data and tools

 

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Mexico Beach, Florida - Floodplain Ordinance 712

February 5, 2019

Mexico Beach is on the Gulf of Mexico in Bay County, Florida and faces climate enhanced hurricanes, coastal storm surge, sea level rise and flooding impacts. In October 2018, Hurricane Michael, a Category 4 storm, made landfall in Mexico Beach demolishing 70% of the town’s homes. The coastal community has amended the Federal Emergency Management Agency (FEMA) flood zones maps to reflect storm surge flood levels and high risk floodplain areas as implicated by Hurricane Michael flooding.  An ordinance has been adopted in which new construction in Mexico Beach must be elevated at least a foot and a half higher than FEMA's base-level flood predictions in both the region’s 100-year and 500-year floodplains.

Resource Category: Law and Governance

 

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Sea-level Rise: Projections for Maryland 2018

2018

Maryland’s shoreline and coastal bays are highly vulnerable to sea-level rise (SLR), causing shoreline erosion, deterioration of tidal wetlands, saline contamination of low-lying farm fields, "nuisance” tidal flooding, and more.  Fulfilling requirements of Maryland’s Commission on Climate Change Act of 2015, this report provides updated projections of sea-level rise expected into the next century along Maryland’s coast. The probabilistic SLR projections presented in the report offer a scientifically sound and readily applicable basis for planning and regulation, assessments of changes in tidal range and storm surge, development of inundation mapping tools, infrastructure siting and design, and identification of adaptation strategies for high-tide flooding and saltwater intrusion.

Resource Category: Data and tools

 

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Resilient Boston Harbor

October 17, 2018

The plan to develop a climate resilient Boston Harbor in the City of Boston, Massachusetts offers strategies for Boston's 47-mile shoreline that will increase access and open space along the waterfront while better protecting the city during a major flooding event. The plan focuses on green infrastructure and natural solutions to lowering the severity of sea level rise and flooding from climate change. “Resilient Boston Harbor” invests in Boston's waterfront with a proposed restructuring of Fort Point Channel, and development of coastal protection from East Boston to the Dorchester shoreline.

Resource Category: Planning

 

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CA AB 3012 State Coastal Conservancy: grants: climate change projects

September 21, 2018

AB 3012 authorizes the State Coastal Conservancy to address climate change impacts on California’s coastal resources through funding projects that reduce greenhouse gas emissions, address extreme weather events, sea level rise, storm surge, beach and bluff erosion, salt water intrusion, flooding, and other coastal hazards that threaten coastal communities, infrastructure, and natural resources.

Resource Category: Law and Governance

 

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Climate Ready Boston Coastal Resilience Tracker

September 2018

The City of Boston, Massachusetts is implementing many coastal resilience projects through the Climate Ready Boston program. This project tracker maps and describes a number of these progressive approaches to coastal resilience. The projects included in this tool are recommendations from the coastal resilience solutions plans for East Boston, Charlestown and South Boston.

Resource Category: Solutions

 

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Rigorously Valuing the Role of U.S. Coral Reefs in Coastal Hazard Risk Reduction

2019

This report issued by the U. S. Geological Survey and the U. S. Department of the Interior quantifies the value of U. S. coral reefs in protecting people and infrastructure from coastal hazards that will be exacerbated by climate change and sea-level rise including extreme weather events, flooding, and erosion. The report is intended to inform stakeholders and decision-makers of the value of coral reefs in reducing risk from coastal hazards, and to provide quantitative data that can be used to consider the role coral reefs should play in adaptation and risk mitigation planning.

Authors or Affiliated Users: Curt Storlazzi, Borja Reguero, Aaron Cole, Erik Lowe, James Shope, Ann Gibbs, Barry Nickel, Robert McCall, Ap R. van Dongeren, Michael Beck

Resource Category: Assessments

 

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Patterns and Projections of High Tide Flooding Along the U.S. Coastline Using a Common Impact Threshold

February 2018

The National Oceanic and Atmospheric Administration (NOAA) analyzes "high tide flooding" (also known as "nuisance flooding") in this report, and finds that it is becoming more commonplace due to sea level rise. High tide flooding impacts roads, beaches, parks, and private property, and is generally more disruptive than damaging. However, there are places such as Norfolk, Virginia; San Diego, California; and the U. S Marshall islands where it is currently a serious problem. Even more, with continued sea level rise, flooding is likely to increase.

Authors or Affiliated Users: William Sweet, Greg Dusek, Jayantha Obeysekera, John Marra

Resource Category: Data and tools

 

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County of San Mateo, California Sea Level Rise Vulnerability Assessment

March 13, 2018

San Mateo County, California is particularly vulnerable to sea level rise as it is bound by the Pacific Ocean to the west and the San Francisco Bay to the east. This comprehensive 200+ page sea level rise vulnerability assessment offers a highly detailed analysis of the current and future coastal flooding and erosion risks for the County in terms of various sectors and networked infrastructure including critical infrastructure assets, impacts on human mental and physical health, vulnerable populations, and natural communities and ecosystems.

Resource Category: Assessments

 

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WEDG (Waterfront Edge Design Guidelines)

March 2018

A program of the Waterfront Alliance, WEDG is a tool for use prior to and during the design process of waterfront projects. Created for professionals, communities, and landowners, the tool is a credit system and series of guidelines to develop and enhance coastal projects on a voluntary basis. The guidelines support decision making for development that is resilient to the coastal impacts of climate change, enhances ecological protections, and provides equitable public access.

Resource Category: Planning

 

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