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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.
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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
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Surging Seas - FEMA NFIP Community Rating System Guide
February 13, 2017
Surging Seas is a suite of free public web tools for sea level rise and coastal flood analysis from Climate Central. Climate Central has identified many ways the Surging Seas web tool could be used with FEMA's National Flood Insurance Program (NFIP)’s Community Rating System (CRS). CRS is a voluntary insurance rating program that recognizes communities for implementing floodplain management practices that exceed the Federal minimum requirements of the NFIP. In exchange for flood risk reduction, policyholders can receive reduced flood insurance premiums.
Author or Affiliated User: Daniel Rizza
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Rhode Island: STORMTOOLS for mapping coastal flooding
2016
STORMTOOLS is a set of comprehensive mapping tools providing a series of maps and data sets that depict the sea level rise and storm surge in Rhode Island. The site now features a set of data layers for municipalities. STORMTOOLS is intended as a way to make the data outputs of a complex set of modeling processes freely available, and is designed to help homeowners and municipalities in Rhode Island better understand their risks from coastal storms and flooding, and to plan for sea level rise.
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Recommendation of Sea Level Rise Planning Scenarios for Delaware: Technical Report
2017
The Delaware Department of Natural Resources and Environmental Control (DNREC) first developed Recommended Sea Level Rise Scenarios for Delaware in 2009. In 2016-2017, a new Delaware Sea Level Rise Technical Committee was convened to update the scenarios based on the latest scientific research and modeling. Led by Delaware Geological Survey and DNREC Delaware Coastal Programs, the Committee and these sea-level rise (SLR) planning scenarios respond to 2013 Executive Order 41 - which requires Delaware state agencies to factor SLR into capital improvement projects and land use decisions, and for DNREC to periodically update SLR scenarios with the best scientific data available.
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California “Sea the Future” Tool
The “Sea the Future” tool was developed by the State of California to help the state’s local planners and residents understand and be able to select from among a dozen different sea-level rise and flooding visualization tools that may be useful in efforts to plan for sea-level rise. Sea the Future provides summaries and information on tool features, similarities and differences across tools, and advantages and disadvantages of each tool so that end-users can make an informed decision about which tool(s) to use to support decisionmaking.
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2018 State of U.S. High Tide Flooding with a 2019 Outlook
June 2019
NOAA's fifth annual update of the State of Coastal High Tide Flooding (HTF) provides HTF projections to inform adaptation and decision-making for the following year, and over the longer term. High tide flooding (aka ‘sunny day’ or ‘nuisance’ flooding) occurs when water levels measured at NOAA tide gauges exceed heights based on the minor-flood thresholds set by NOAA’s National Weather Service. This report updates high tide flood frequencies during 2018 (based on the meteorological year: May 2018-April 2019) at 98 NOAA tide gauge locations, and provides a statistical outlook for 2019 (May 2019 - April 2020).
Authors or Affiliated Users: William Sweet, Greg Dusek, Doug Marcy, Greg Carbin, John Marra
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Sea-Level Report Cards: Trends, projections, and processes to aid coastal planning
2018
This tool is created and maintained by the College of William and Mary’s Virginia Institute of Marine Science (VIMS) and provides annual sea-level rise projections and trends for 32 localities across the nation where the National Oceanic and Atmospheric Administration (NOAA) maintains tidal gauges. The report cards are novel in that sea-level rise projections are presented on a local scale and expected to be updated annually (in January) as tidal gauge data becomes available. In comparison, similar data sets are often on a global scale and released after longer time spans.
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Landmark at Risk: Protecting the Historic Seaport of Annapolis, Maryland
October 2017
Utilizing GIS tools to overlay flood risk maps with Annapolis’ many historical sites, the interactive web-based resource help users to understand the threat to their community through images and story mapping. Spurred by the state’s 2008 Climate Action Plan, which assessed what approach (protecting, retreating, or abandoning) was most appropriate for coastal communities threatened by sea level rise, this tool brings together experts in planning, architecture, engineering, and historic preservation.
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2016 City of Imperial Beach Sea Level Rise Assessment
September 2016
The City of Imperial Beach is a mostly residential community located in San Diego County, California. With 1. 5 miles of coastline and waterbodies adjacent to three sides of the city, Imperial Beach is vulnerable to climate change-induced sea-level rise and flooding. This assessment projects sea-level rise along the coastline, assesses the associated risks to coastal resources and development, and evaluates adaptation strategies. Proposed near-term policy approaches include updating the zoning code with hazard zone overlays, developing a beach management plan, and working with state and federal partners to address vulnerabilities.
Resource Category: Data and tools
