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Location Folder Show Tree ROOT _ScienceBase Catalog __USGS Data Release Products 09471143 - Walnut Gulch below ARS Flume 6, near Tombstone, AZ - 07/28/2017 Flow Event Data 12-digit hydrologic unit outlet (pour) points for the NHDPlus V2.1 WBD snapshot 1992 digital surface model and orthomosaic of Malakoff Diggins State Historic Park, California 2010-2017 zooplankton data from whole water-column tows in Lakes Michigan and Huron 2013 East Bay Seismic Experiment (EBSE) -- Implosion Data, Hayward, Calif More... Filters Date Range Past year (354) Past month (20) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (191) Raster (25) NetCDF OPeNDAP Service (11) OGC Web Service (9) ArcGIS Service Definition (2) Types Map Service (255) OGC WMS Layer (228) OGC WFS Layer (219) Downloadable (218) Shapefile (191) More... Contacts U.S. Geological Survey - ScienceBase Woods Hole Coastal and Marine Science Center U.S. Geological Survey Marie K Bartlett Coastal and Marine Geology Program More... Categories Data (318) Data Release - Revised (2) Image (2) Data Release - In Progress (1) Tag Types Theme (377) Place (372) theme (14) USGS Scientific Topic Keyword (30) place (11) ISO 19115 Topic Category (8) ISO Topic Category (12) More... Tag Schemes None (349) USGS Thesaurus (350) ISO 19115 Topic Category (356) Geographic Names Information System (GNIS) (57) Common geographic areas (36) Marine Realms Information Bank (MRIB) keywords (53) General (7) More... View Results as: JSON ATOM CSV Browse Folder

Computed Tomography (CT) scans, photographs, X-ray Fluorescence (XRF) scans, grain size, and gamma-ray bulk density data of vibracores from Searsville Lake, Jasper Ridge Biological Preserve, Stanford, California This data release presents measurements and data from two vibracores (JRBP2018-VC01A and JRBP2018-VC01B) collected from Searsville Lake, a reservoir in Jasper Ridge Biological Preserve, Stanford, California, on October 29, 2018 (USGS Field Activity 2018-682-FA). Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Jasper Ridge, PCMSC, Pacific Coastal and Marine Science Center, All tags... San Mateo County, Searsville Lake, Stanford, State of California, U.S. Geological Survey, USGS, geochemistry, geoscientificInformation, limnology, sediment, Fewer tags Beach topography and nearshore bathymetry of northern Monterey Bay, California This data release presents beach topography and nearshore bathymetry data from repeated surveys in northern Monterey Bay, California to document changes in shoreline position and coastal morphology as they relate to episodic (storms), seasonal, and interannual and longer (e.g. El Niño) processes. The ongoing monitoring program was initiated in October 2014 with semi-annual surveys performed in late summer (September or October) and Spring (March). Nearshore bathymetry and topography data were collected along a series of shore-perpendicular transects spaced primarily at 50-250 m intervals between Santa Cruz and Moss Landing, California (fig. 1). The transects were located along sandy stretches of the coastline... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bathymetry and Elevation, CMGP, Coastal and Marine Geology Program, Echo Sounders, GPS (Global Positioning System), All tags... GPS measurement, Geophysics, Global Positioning System (GPS) observations, LIDAR, Monterey Bay, Monterey County, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Santa Cruz County, U.S. Geological Survey, USGS, Water Depth, bathymetry, bathymetry measurement, coastal sediment budget, digital elevation models, elevation, single-beam echo sounder, topographic mapping, topography, Fewer tags Coastal Storm Modeling System (CoSMoS) for Central California, v3.1 First Release: November 2018 The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of kilometers) of storm-induced coastal flooding and erosion for both current and future sea-level rise (SLR) scenarios. CoSMoS v3.1 for Central California shows projections for future climate scenarios (sea-level rise and storms) to provide emergency responders and coastal planners with critical storm-hazards information that can be used to increase public safety, mitigate physical damages, and more effectively manage and allocate resources within complex coastal settings. Data for Central California covers the coastline from Pt. Conception to Golden Gate Bridge.... Categories: Data Release - Revised; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Beaches, CMHRP, Central California, Central California Coast, Climate change, All tags... ClimatologyMeteorologyAtmosphere, Coastal and Marine Hazards and Resources Program, Coastal erosion, Earth sciences, Erosion, Extreme Weather, Floods, Hazards Planning, Mathematical Modeling, Ocean Waves, Ocean Winds, Oceans, PCMSC, Pacific Coastal and Marine Science Center, San Mateo County, Sea-Level Rise, Sea-level Change, State of California, Storm Surge, Storms, USGS, Water Depth, Wind, climate-change effects, waves, Fewer tags Maps of earthquake ground motions for the 2009 NEHRP Recommended Seismic Provisions and the 2010 ASCE/SEI 7 Standard For designing buildings and other structures to safely resist earthquakes, the 2009 National Earthquake Hazards Reduction Program (NEHRP) Recommended Seismic Provisions and the 2010 American Society of Civil Engineers, Structural Engineering Institute (ASCE/SEI) 7 Standard contain maps of Risk-Targeted Maximum Considered Earthquake (MCER) spectral response accelerations, Maximum Considered Earthquake Geometric Mean (MCEG) peak ground accelerations, and long-period transition periods (TL). The MCER ground motions are also in the 2013 ASCE/SEI 41 Standard and the 2012 and 2015 editions of the International Building Code. The MCER, MCEG, and TL maps are derived from the U.S. Geological Survey (USGS) National Seismic... Tags: USGS Science Data Catalog (SDC) Intersects for coastal region of Cape Cod Bay, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.1 The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast and support local land-use decisions. Trends of shoreline position over long and short-term timescales provide information to landowners, managers, and potential buyers about possible future impacts to coastal resources and infrastructure. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates along ocean-facing sections of the Massachusetts coast. In 2013 two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from NOAA's Ocean Service, Coastal... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Coast, CMGP, Cape Cod, Cape Cod Bay, Coastal and Marine Geology Program, All tags... DSAS, Digital Shoreline Analysis System, Intersects, Massachusetts, North America, Shoreline, Shoreline Change, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, geospatial datasets, oceans, Fewer tags Elevation of marsh units in Massachusetts salt marshes This data release contains coastal wetland synthesis products for Massachusetts, developed in collaboration with the Massachusetts Office of Coastal Zone Management. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and tidal range are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with tools to estimate the vulnerability and ecosystem service potential of these wetlands.... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Buzzards Bay, Cape Cod, Cape Cod Bay, Cape Cod National Seashore, Danvers River, All tags... Duxbury Bay, Essex Bay, Great Marsh Area of Critical Environmental Concern, Ipswich River, Martha's Vineyard, Massachusetts, Massachusetts Bay, Merrimack River, Nantucket, Neponset River, North River, Parker River National Wildlife Refuge, Parker River/Essex Bay Area of Critical Environmental Concern, Pines River, Pleasant Bay Area of Critical Environmental Concern, Plum Island, Sandy Neck/Barnstable Area of Critical Environmental Concern, Scituate Harbor, South River, United States, Wellfleet Harbor Area of Critical Environmental Concern, Weymouth Back River, Weymouth Fore River, coastal ecosystems, coastal processes, elevation, elevation, environment, estuary, geospatial datasets, inlandWaters, marsh health, oceans, salt marsh, vegetation, wetland ecosystems, wetland functions, Fewer tags Mean tidal range of marsh units in Massachusetts salt marshes This data release contains coastal wetland synthesis products for Massachusetts, developed in collaboration with the Massachusetts Office of Coastal Zone Management. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and tidal range are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with tools to estimate the vulnerability and ecosystem service potential of these wetlands.... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Buzzards Bay, Cape Cod, Cape Cod Bay, Cape Cod National Seashore, Danvers River, All tags... Duxbury Bay, Essex Bay, Great Marsh Area of Critical Environmental Concern, Ipswich River, Martha's Vineyard, Massachusetts, Massachusetts Bay, Merrimack River, Nantucket, Neponset River, North River, Parker River National Wildlife Refuge, Parker River/Essex Bay Area of Critical Environmental Concern, Pines River, Pleasant Bay Area of Critical Environmental Concern, Plum Island, Sandy Neck/Barnstable Area of Critical Environmental Concern, Scituate Harbor, South River, United States, Wellfleet Harbor Area of Critical Environmental Concern, Weymouth Back River, Weymouth Fore River, coastal ecosystems, coastal processes, environment, estuary, geospatial datasets, inlandWaters, marsh health, oceans, salt marsh, tidal range, tides (oceanic), vegetation, wetland ecosystems, wetland functions, Fewer tags Historical shoreline positions for the coast of MA, from 1844 - 2014 The U.S. Geological Survey, in cooperation with the Massachusetts Office of Coastal Zone Management compiled Massachusetts vector shorelines into an updated dataset for the Office’s Shoreline Change Project. The Shoreline Change Project started in 1989 to identify erosion-prone areas of the Massachusetts coast by compiling a database of historical shoreline positions. Trends of shoreline position over long- and short-term timescales provide information to landowners, managers, and potential buyers about possible future changes to costal resources and infrastructure. This updated dataset strengthens the understanding of shoreline position change in Massachusetts. It includes U.S. Geological Survey vector shorelines... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Coast, Buzzard’s Bay, Cape Cod Bay, Coastal and Marine Geology Program, DSAS, All tags... Digital Shoreline Analysis System, MA CZM, MHW, Martha’s Vineyard, Massachusetts, Massachusetts Coastal Zone Management, Massachusetts Shoreline Change Project, Mean High Water, Nantucket, National Assessment of Shoreline Change Project, New England, North Shore, Outer Cape, Shoreline, Shoreline Change, South Cape, South Shore, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, geospatial datasets, oceans, Fewer tags Baselines for Outer Cape Cod, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.1 The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast by compiling a database of historical (mid 1800's-1989) shoreline positions. Trends of shoreline position over long and short-term timescales provide information to landowners, managers, and potential buyers about possible future impacts to coastal resources and infrastructure. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates along ocean-facing sections of the Massachusetts coast. In 2013, two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Coast, Baseline, CMGP, Cape Cod, Coastal and Marine Geology Program, All tags... DSAS, Digital Shoreline Analysis System, Massachusetts, New England, North America, Outer Cape, Shoreline, Shoreline Change, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, geospatial datasets, oceans, Fewer tags Intersects for the coastal region around Boston, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.1 The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast and support local land-use decisions. Trends of shoreline position over long and short-term timescales provide information to landowners, managers, and potential buyers about possible future impacts to coastal resources and infrastructure. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates along ocean-facing sections of the Massachusetts coast. In 2013 two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from NOAA's Ocean Service, Coastal... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Coast, Boston, CMGP, Coastal and Marine Geology Program, DSAS, All tags... Digital Shoreline Analysis System, Intersects, Massachusetts, North America, Shoreline, Shoreline Change, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, geospatial datasets, oceans, Fewer tags Long-term and short-term shoreline change rates for the region of Buzzards Bay, Massachusetts, calculated with and without the proxy-datum bias using the Digital Shoreline Analysis System version 5.1 The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast and support local land-use decisions. Trends of shoreline position over long and short-term timescales provide information to landowners, managers, and potential buyers about possible future impacts to coastal resources and infrastructure. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates along ocean-facing sections of the Massachusetts coast. In 2013 two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from NOAA's Ocean Service, Coastal... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Accretion, Atlantic Coast, Baseline, Buzzards Bay, CMGP, All tags... Coastal and Marine Geology Program, DSAS, Digital Shoreline Analysis System, Erosion, Esri polyline shapefile, Historical Shoreline, LRR, Linear Regression Rate, Long-term, Massachusetts, Massachusetts Office of Coastal Zone Management, New England, Shoreline, Shoreline Change Rate, Short-term, Transect, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, geoscientificInformation, geospatial datasets, oceans, Fewer tags Uncertainty of forecasted shoreline positions for Florida and Georgia During Hurricane Irma, Florida and Georgia experienced substantial impacts to beaches, dunes, barrier islands, and coral reefs. Extensive erosion and coral losses from hurricanes result in increased vulnerability of coastal regions, including densely populated areas. Erosion may put critical infrastructure at risk of future flooding and may cause economic loss. The U.S. Geological Survey (USGS) Coastal and Marine Hazards Resources Program is working to assess shoreline erosion along the southeast U.S. coastline and analyze its implications for future vulnerability. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Coastal and Marine Geology Program, DSAS, Digital Shoreline Analysis System, Florida, Georgia, All tags... Kalman filter, Shoreline Forecasting, Shoreline Forecasting Uncertainty, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, geospatial datasets, oceans, Fewer tags High resolution idealized COAWST model to test marsh lateral retreat formulations The numerical model is built using an high resolution (1m) idealized domain to test the implementation of lateral retreat formulations in the COAWST modeling framework. The lateral retreat is calculated within the model and is based on lateral wave thrust. Categories: Data; Types: NetCDF OPeNDAP Service; Tags: barotropic_sea_water_x_velocity, barotropic_sea_water_y_velocity, coastal processes, dataset, mathematical modeling, All tags... ocean_s_coordinate_g1, oceans, sea_surface_height_above_geopotential_datum, sea_water_potential_temperature, sea_water_salinity, sea_water_x_velocity, sea_water_y_velocity, service, time, Fewer tags Intersects for the Florida east coast (FLec) coastal region generated to calculate short-term shoreline change rates using the Digital Shoreline Analysis System version 5 During Hurricane Irma in September 2017, Florida and Georgia experienced significant impacts to beaches, dunes, barrier islands, and coral reefs. Extensive erosion and coral losses result in increased immediate and long-term hazards to shorelines that include densely populated regions. These hazards put critical infrastructure at risk to future flooding and erosion and may cause economic losses. The USGS Coastal and Marine Hazards Resources Program (CMHRP) is assessing hurricane-induced coastal erosion along the southeast US coastline and implications for vulnerability to future storms. Shoreline positions were compiled prior to and following Hurricane Irma along the sandy shorelines of the Gulf of Mexico and Atlantic... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Coast, CMGP, Coastal and Marine Geology Program, DSAS, Digital Shoreline Analysis System, All tags... Florida, Georgia, Gulf Coast, Intersect points, Intersects, North America, Shoreline, Shoreline Change, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, geospatial datasets, oceans, Fewer tags Seabeach Amaranth Presence-Absence Data, Assateague Island National Seashore, 2010 Understanding how sea-level rise will affect coastal landforms and the species and habitats they support is critical for developing approaches that balance the needs of humans and native species. Given the magnitude of the threat posed by sea-level rise, and the urgency to better understand it, there is an increasing need to forecast sea-level rise effects on barrier islands. To address this problem, scientists in the U.S. Geological Survey (USGS) Coastal and Marine Geology program are developing Bayesian networks as a tool to evaluate and to forecast the effects of sea-level rise on shoreline change, barrier island geomorphology, and habitat availability for species such as the piping plover (Charadrius melodus)... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Assateague Island, Assateague Island, Assateague Island National Seashore, Assateague Island National Seashore, Atlantic Ocean, All tags... Barrier Island, Bayesian Network, CMHRP, Chincoteague National Wildlife Refuge, Coastal Erosion, Coastal Habitat, Coastal Hazards, Coastal and Marine Hazards and Resources Program, Coastal processes, Delmarva Peninsula, Erosion, GIS, Geographic Information Systems, MD, MHW, Maryland, Mean High Water, North America, Probability, Sea Level Rise, Sea-level change, Seabeach amaranth, Shoreline Change, U.S. Geological Survey, USA, USGS, United States, VA, Virginia, Woods Hole Coastal and Marine Science Center, coastal processes, environment, environment, erosion, geographic information systems, geomorphology, geoscientificInformation, geoscientificInformation, geospatial analysis, geospatial datasets, hazards, hazards, land use and land cover, sea-level change, transect sampling, vegetation, Fewer tags Topobathy Products in Pea Island National Wildlife Refuge, North Carolina in November 2020 and April, September, and October 2021 The data in this part of the release characterize the beach and nearshore environment at the USGS DUring Nearshore Event eXperiment (DUNEX) site on Pea Island National Wildlife Refuge (PINWR) and at the Basnight Bridge (BB), NC. In November 2020, April, September, and October 2021, USGS and Woods Hole Oceanographic Institute (WHOI) scientists conducted multiple field surveys to collect a topobathy elevation time series. Bathymetry for topobathy products was collected in the nearshore using a single-beam echosounder mounted on a surf capable self-righting electric autonomous survey vehicle. Topography is produced using GPS walking surveys or structure-from-motion (SfM) with the imagery and ground control point data... Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Dare, North Carolina, Pea Island, All tags... U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, bathymetry, elevation, geoscientificInformation, oceans, remote sensing, single-beam echo sounder, Fewer tags Hurricane Sandy at Fire Island, NY using a variable bottom roughness over the barrier island The Coupled Ocean-Atmosphere-Wave-Sediment Transport (COAWST Warner and others, 2019; Warner and others, 2010) model was used to simulate ocean circulation, waves, and sediment transport to study barrier island breaches that occurred during Hurricane Matthew (2016) near Matazas FL, and Hurricane Sandy (2012) at Fire Island, NY. Hurricane Sandy was a Saffir-Simpson Category 2 hurricane that transited the Western Atlantic Ocean relatively far offshore of the US East Coast for five days until turning west to make landfall in New Jersey on 29 October 2012, causing extreme coastal erosion and flooding with destruction to residences and infrastructure along the East coast, particularly in the New York Bight. Maximum... Categories: Data; Types: Map Service, NetCDF OPeNDAP Service, OGC WMS Layer Flood-Inundation Depth Grids for Dardenne Creek Backwater, St. Charles County, Missouri, 2019 Digital flood-inundation maps for a 9.9-mile reach of Dardenne Creek, St. Charles County, Missouri, were created by the U.S. Geological Survey (USGS) in cooperation with St. Charles County, Missouri Department of Transportation, and the cities of O'Fallon and St. Peters, Missouri. The flood-inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Program at http://water.usgs.gov/osw/flood_inundation/ , depict estimates of the areal extent and depth of flooding corresponding to select water levels (stages) at the USGS streamgages 05514860 Dardenne Creek at Old Town St. Peters, Missouri, and 05587450 Mississippi River at Grafton, Illinois. Near-real-time stages at these streamgages... Tags: Dardenne Creek Backwater, Missouri, St. Charles County, flood-inundation maps, flooded area, All tags... floods, geospatial analysis, high-water marks, river/stream, Fewer tags Ground control points Head of the Meadow Beach, Truro, MA on March 10, 2023 The data in this release re-map the beach and nearshore environment at Head of the Meadow Beach in Truro, MA and provide updated environmental context for the 2020 CoastCam installation that looks out at the coast shared by beachgoers, shorebirds, seals, and sharks. This is related to the field activity 2022-015-FA and a collaboration with the National Park Service at Cape Cod National Seashore to monitor the region that falls within the field of view of CoastCam CACO-01, which are two video cameras aimed at the beach. In March and April 2023, U.S. Geological Survey and Woods Hole Oceanographic Institute (WHOI) scientists conducted field surveys to collect topographic and bathymetric data. Images of the beach for... Categories: Data; Tags: AeroPoint, CMHRP, Cape Cod, Coastal and Marine Hazards and Resources Program, GPS measurement, All tags... Global Positioning System (GPS) observations, Ground control point, Head of the Meadow Beach, Helikite, Massachusetts, Truro, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, elevation, geolocation measurement, geoscientificInformation, location, oceans, shoreline, Fewer tags Buzzards Bay The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast and support local land-use decisions. Trends of shoreline position over long and short-term timescales provide information to landowners, managers, and potential buyers about possible future impacts to coastal resources and infrastructure. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates along ocean-facing sections of the Massachusetts coast. In 2013 two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from NOAA's Ocean Service, Coastal... 1 2 3 4 5 ... 26 »