Research to identify areas that are most vulnerable to coastal change hazards including beach and dune erosion, long-term shoreline change, and sea-level rise.
Coastlines are constantly changing landscapes that pose fascinating science questions as well as unique management challenges. The National Assessment of Coastal Change Hazards (NACCH) provides robust scientific findings that help to identify areas that are most vulnerable to diverse coastal change hazards including beach and dune erosion, long-term shoreline change, and sea-level rise. Through extensive observation, modeling and prediction of these processes, scientists gauge how U.S. shores have historically shifted, and how past changes will affect their vulnerability to future hazards.
Storm-Induced Coastal Change Hazards - Research to understand the magnitude and variability of extreme storm impacts on sandy beaches in order to improve real-time and scenario-based predictions of coastal change to support management of coastal infrastructure, resources, and safety.
Long-Term Coastal Change - Nationally-consistent compilation of historic shoreline positions and maps of changes along open-ocean sandy shores of the conterminous U.S. and parts of Alaska and Hawaii.
Coastal Vulnerability to Sea-Level Rise - Historical and recent observations of coastal change are combined with model simulations of beaches, barrier islands, wetlands, and coastal aquifers to determine the probability of coastal change due to sea-level rise.
Coastal Change Hazards Portal - Online access to data and tools enables users to apply coastal change hazards assessments to their specific needs.
Integration of Processes over Different Spatial and Temporal Scales - Integration of the different scales of coastal processes to better understand future vulnerability to storms, long-term erosion, and sea-level rise.
Below are research tasks and science projects associated with this project.
Integration of Processes over Different Spatial and Temporal Scales
Forecasting Coastal Change
National Assessment of Coastal Vulnerability to Sea Level Rise
Long-Term Coastal Change
Below are publications associated with this project.
National assessment of shoreline change—Summary statistics for updated vector shorelines and associated shoreline change data for the north coast of Alaska, U.S.-Canadian Border to Icy Cape
Coupling centennial-scale shoreline change to sea-level rise and coastal morphology in the Gulf of Mexico using a Bayesian network
National assessment of shoreline change: a GIS compilation of vector shorelines and associated shoreline change data for the north coast of Alaska, U.S.-Canadian border to Icy Cape
National assessment of shoreline change: historical change along the north coast of Alaska, U.S.-Canadian border to Icy Cape
A method for determining average beach slope and beach slope variability for U.S. sandy coastlines
National assessment of hurricane-induced coastal erosion hazards: Northeast Atlantic Coast
Using a Bayesian Network to predict shore-line change vulnerability to sea-level rise for the coasts of the United States
Hurricane Sandy: observations and analysis of coastal change
Scaling coastal dune elevation changes across storm-impact regimes
Evaluation of wave runup predictions from numerical and parametric models
National assessment of shoreline change: historical shoreline change along the Pacific Northwest coast
Geomorphic and human influence on large-scale coastal change
Below are data or web applications associated with this project.
Coastal Change Hazards Portal
Interactive access to coastal change science and data for our Nation’s coasts. Information and products are organized within three coastal change hazard themes: 1) extreme storms, 2) shoreline change, and 3) sea-level rise. Displays probabilities of coastal erosion.
Oblique Aerial Photography Viewer
Obique photos offer a unique perspective of the coast. Features such as beach erosion or accretion, dune erosion and overwash can all be clearly characterized in this imagery. It also documents coastal infrastructure, as well as the damage that infrastructure may incur as the result of an impacting hurricane.
iCoast
Help scientists at the U.S. Geological Survey annotate aerial photographs with keyword tags to identify changes to the coast after extreme storms.
Coastal Change Hazards Portal
Interactive access to coastal change science and data for our Nation’s coasts. Information and products are organized within three coastal change hazard themes: 1) extreme storms, 2) shoreline change, and 3) sea-level rise. Displays probabilities of coastal erosion.
Below are news stories associated with this project.
- Overview
Research to identify areas that are most vulnerable to coastal change hazards including beach and dune erosion, long-term shoreline change, and sea-level rise.
Cliff erosion is a common storm-induced hazard along the West Coast. (Public domain.) Coastlines are constantly changing landscapes that pose fascinating science questions as well as unique management challenges. The National Assessment of Coastal Change Hazards (NACCH) provides robust scientific findings that help to identify areas that are most vulnerable to diverse coastal change hazards including beach and dune erosion, long-term shoreline change, and sea-level rise. Through extensive observation, modeling and prediction of these processes, scientists gauge how U.S. shores have historically shifted, and how past changes will affect their vulnerability to future hazards.
Storm-Induced Coastal Change Hazards - Research to understand the magnitude and variability of extreme storm impacts on sandy beaches in order to improve real-time and scenario-based predictions of coastal change to support management of coastal infrastructure, resources, and safety.
Long-Term Coastal Change - Nationally-consistent compilation of historic shoreline positions and maps of changes along open-ocean sandy shores of the conterminous U.S. and parts of Alaska and Hawaii.
Coastal Vulnerability to Sea-Level Rise - Historical and recent observations of coastal change are combined with model simulations of beaches, barrier islands, wetlands, and coastal aquifers to determine the probability of coastal change due to sea-level rise.
Coastal Change Hazards Portal - Online access to data and tools enables users to apply coastal change hazards assessments to their specific needs.
Integration of Processes over Different Spatial and Temporal Scales - Integration of the different scales of coastal processes to better understand future vulnerability to storms, long-term erosion, and sea-level rise.
- Science
Below are research tasks and science projects associated with this project.
Integration of Processes over Different Spatial and Temporal Scales
This research uses state-of-the-art observations, numerical models, and model-data assimilation techniques to better understand their cumulative effect on coastal change.Forecasting Coastal Change
This project focuses on understanding the magnitude and variability of extreme storm impacts on sandy beaches. The overall objective is to improve real-time and scenario-based predictions of coastal change to support management of coastal infrastructure, resources, and safety.ByNatural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, St. Petersburg Coastal and Marine Science Center, Hurricane Dorian, Hurricane Florence, Hurricane Harvey, Hurricane Irma, Hurricane Jose, Hurricane Maria, Hurricane Matthew, Hurricane Michael, Hurricane Nate, Hurricane SandyNational Assessment of Coastal Vulnerability to Sea Level Rise
The original national coastal vulnerability index (CVI) assessment was motivated by expected accelerated sea-level rise (SLR) and the uncertainty in the response of the coastline to SLR. This research was conducted between 1999 and 2001, and is currently being updated using new data sources and methodology. This original study was part of the National Assessment of Coastal Change Hazards project.Long-Term Coastal Change
Goals of this task include developing and improving coastal-change assessments and supporting long-term planning and decision making to ensure sustainable coastal economies, infrastructure, and ecosystems. - Publications
Below are publications associated with this project.
Filter Total Items: 31National assessment of shoreline change—Summary statistics for updated vector shorelines and associated shoreline change data for the north coast of Alaska, U.S.-Canadian Border to Icy Cape
Long-term rates of shoreline change for the north coast of Alaska, from the U.S.-Canadian border to the Icy Cape region of northern Alaska, have been updated as part of the U.S. Geological Survey’s National Assessment of Shoreline Change Project. Short-term shoreline change rates are reported for the first time. Additional shoreline position data were used to compute rates where the previous rate-AuthorsAnn E. Gibbs, Bruce M. RichmondCoupling centennial-scale shoreline change to sea-level rise and coastal morphology in the Gulf of Mexico using a Bayesian network
Predictions of coastal evolution driven by episodic and persistent processes associated with storms and relative sea-level rise (SLR) are required to test our understanding, evaluate our predictive capability, and to provide guidance for coastal management decisions. Previous work demonstrated that the spatial variability of long-term shoreline change can be predicted using observed SLR rates, tidAuthorsNathaniel G. PlantNational assessment of shoreline change: a GIS compilation of vector shorelines and associated shoreline change data for the north coast of Alaska, U.S.-Canadian border to Icy Cape
The Arctic Coastal Plain of northern Alaska is an area of strategic economic importance to the United States, is home to remote Native communities, and encompasses unique habitats of global significance. Coastal erosion along the Arctic coast is chronic, widespread, and may be accelerating, which threatens defense- and energy-related infrastructure, natural shoreline habitats, and Native communitiAuthorsAnn E. Gibbs, Karen A. Ohman, Bruce M. RichmondNational assessment of shoreline change: historical change along the north coast of Alaska, U.S.-Canadian border to Icy Cape
Beach erosion is a persistent problem along most open-ocean shores of the United States. Along the Arctic coast of Alaska, coastal erosion is widespread, may be accelerating, and is threatening defense and energy-related infrastructure, coastal habitats, and Native communities. As coastal populations continue to expand and infrastructure and habitat are increasingly threatened by erosion, there isAuthorsAnn E. Gibbs, Bruce M. RichmondA method for determining average beach slope and beach slope variability for U.S. sandy coastlines
The U.S. Geological Survey (USGS) National Assessment of Hurricane-Induced Coastal Erosion Hazards compares measurements of beach morphology with storm-induced total water levels to produce forecasts of coastal change for storms impacting the Gulf of Mexico and Atlantic coastlines of the United States. The wave-induced water level component (wave setup and swash) is estimated by using modeled offsAuthorsKara S. Doran, Joseph W. Long, Jacquelyn R. OverbeckNational assessment of hurricane-induced coastal erosion hazards: Northeast Atlantic Coast
Beaches serve as a natural buffer between the ocean and inland communities, ecosystems, and natural resources. However, these dynamic environments move and change in response to winds, waves, and currents. During extreme storms, changes to beaches can be great, and the results are sometimes catastrophic. Lives may be lost, communities destroyed, and millions of dollars spent on rebuilding. DurinAuthorsJustin J. Birchler, Hilary F. Stockdon, Kara S. Doran, David M. ThompsonUsing a Bayesian Network to predict shore-line change vulnerability to sea-level rise for the coasts of the United States
Sea-level rise is an ongoing phenomenon that is expected to continue and is projected to have a wide range of effects on coastal environments and infrastructure during the 21st century and beyond. Consequently, there is a need to assemble relevant datasets and to develop modeling or other analytical approaches to evaluate the likelihood of particular sea-level rise impacts, such as coastal erosionAuthorsBenjamin T. Gutierrez, Nathaniel G. Plant, Elizabeth A. Pendleton, E. Robert ThielerHurricane Sandy: observations and analysis of coastal change
Hurricane Sandy, the largest Atlantic hurricane on record, made landfall on October 29, 2012, and impacted a long swath of the U.S. Atlantic coastline. The barrier islands were breached in a number of places and beach and dune erosion occurred along most of the Mid-Atlantic coast. As a part of the National Assessment of Coastal Change Hazards project, the U.S. Geological Survey collected post-HurrAuthorsKristin L. Sopkin, Hilary F. Stockdon, Kara S. Doran, Nathaniel G. Plant, Karen L.M. Morgan, Kristy K. Guy, Kathryn E. L. SmithScaling coastal dune elevation changes across storm-impact regimes
Extreme storms drive change in coastal areas, including destruction of dune systems that protect coastal populations. Data from four extreme storms impacting four geomorphically diverse barrier islands are used to quantify dune elevation change. This change is compared to storm characteristics to identify variability in dune response, improve understanding of morphological interactions, and providAuthorsJoseph W. Long, Anouk T. M. de Bakker, Nathaniel G. PlantEvaluation of wave runup predictions from numerical and parametric models
Wave runup during storms is a primary driver of coastal evolution, including shoreline and dune erosion and barrier island overwash. Runup and its components, setup and swash, can be predicted from a parameterized model that was developed by comparing runup observations to offshore wave height, wave period, and local beach slope. Because observations during extreme storms are often unavailable, aAuthorsHilary F. Stockdon, David M. Thompson, Nathaniel G. Plant, Joseph W. LongNational assessment of shoreline change: historical shoreline change along the Pacific Northwest coast
Beach erosion is a chronic problem along most open ocean shores of the United States. As coastal populations continue to increase and infrastructure is threatened by erosion, there is increased demand for accurate information regarding past and present trends and rates of shoreline movement. There is also a need for a comprehensive analysis of shoreline movement that is consistent from one coastalAuthorsPeter Ruggerio, Meredith G. Kratzmann, Emily A. Himmelstoss, David Reid, Jonathan Allan, George KaminskyGeomorphic and human influence on large-scale coastal change
An increasing need exists for regional-scale measurements of shoreline change to aid in management and planning decisions over a broad portion of the coast and to inform assessments of coastal vulnerabilities and hazards. A recent dataset of regional shoreline change, covering a large portion of the U.S. East coast (New England and Mid-Atlantic), provides rates of shoreline change over historicalAuthorsCheryl J. Hapke, Meredith G. Kratzmann, Emily A. Himmelstoss - Web Tools
Below are data or web applications associated with this project.
Coastal Change Hazards Portal
Interactive access to coastal change science and data for our Nation’s coasts. Information and products are organized within three coastal change hazard themes: 1) extreme storms, 2) shoreline change, and 3) sea-level rise. Displays probabilities of coastal erosion.
ByNatural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, St. Petersburg Coastal and Marine Science Center, Woods Hole Coastal and Marine Science Center, Gulf of Mexico, Hurricane Dorian, Hurricane Harvey, Hurricane Ian, Hurricane Irma, Hurricane Isaias, Hurricane Jose, Hurricane Laura, Hurricane Marco, Hurricane Maria, Hurricane Matthew, Hurricane Michael, Hurricane Nate, Hurricane Sandy, HurricanesOblique Aerial Photography Viewer
Obique photos offer a unique perspective of the coast. Features such as beach erosion or accretion, dune erosion and overwash can all be clearly characterized in this imagery. It also documents coastal infrastructure, as well as the damage that infrastructure may incur as the result of an impacting hurricane.
ByNatural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, St. Petersburg Coastal and Marine Science Center, Hurricane Florence, Hurricane Harvey, Hurricane Irma, Hurricane Isaias, Hurricane Jose, Hurricane Laura, Hurricane Marco, Hurricane Maria, Hurricane Matthew, Hurricane Sandy, HurricanesiCoast
Help scientists at the U.S. Geological Survey annotate aerial photographs with keyword tags to identify changes to the coast after extreme storms.
Coastal Change Hazards Portal
Interactive access to coastal change science and data for our Nation’s coasts. Information and products are organized within three coastal change hazard themes: 1) extreme storms, 2) shoreline change, and 3) sea-level rise. Displays probabilities of coastal erosion.
ByNatural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, St. Petersburg Coastal and Marine Science Center, Woods Hole Coastal and Marine Science Center, Gulf of Mexico, Hurricane Dorian, Hurricane Harvey, Hurricane Ian, Hurricane Irma, Hurricane Isaias, Hurricane Jose, Hurricane Laura, Hurricane Marco, Hurricane Maria, Hurricane Matthew, Hurricane Michael, Hurricane Nate, Hurricane Sandy, Hurricanes - News
Below are news stories associated with this project.