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Bird locations by date and species In 30 surveys, we mapped 21,486 birds comprising 88 species “interact with” the intertidal habitat. Each full “survey” represents a unique month-year-tide combination (but not necessarily a unique day). Specifically, for each of 15 months between January 2012 and March 2013 we conducted separate, but temporally adjacent high-tide and low-tide bird surveys (30 in total) throughout the intertidal habitats. Back to back surveys within the same month are not meant to be independent measures of bird abundance and should be averaged to get an idea of bird abundance in a particular month. Birds were counted if they were in the intertidal habitat. We also counted some species, like raptors, if they were perched in adjacent... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: California, Carpinteria, Carpinteria Salt Marsh Reserve, Santa Barbara County, bird, All tags... distribution, estuary, habitat, mapping, salt marsh, trematodes, 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 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 Standard deviation of the vegetated fraction in coastal wetlands along the U.S. Gulf of Mexico Coast (16-bit GeoTIFF) Prior research has shown that sediment budgets, and therefore stability, of microtidal marsh complexes scale with areal unvegetated to vegetated marsh ratios (UVVR) suggesting these metrics are broadly applicable indicators of microtidal marsh vulnerability. This effort has developed the UVVR metric using Landsat 8 satellite imagery for the coastal areas of the contiguous United States (CONUS). These datasets provide annual averages of 1) developed, 2) vegetated, 3) unvegetated fractional covers and 4) an unvegetated to vegetated ratio (UVVR) at 30-meter resolution over the coastal areas of the contiguous United States for the years 2014-2018. Additionally, multi-year average values of vegetated fractional cover... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: GeoTIFF, Gulf of Mexico Ocean, USGS:5f5a86e482cefd9f208671b5, United States, coastal ecosystems, All tags... coastal processes, inlandWaters, marsh health, marsh stress, resilience, salt marsh, sedimentation, society, vegetation, vulnerability, wetland ecosystems, wetland functions, Fewer tags Standard deviation of the vegetated fraction in coastal wetlands along the U.S. Pacific Coast (16-bit GeoTIFF) Prior research has shown that sediment budgets, and therefore stability, of microtidal marsh complexes scale with areal unvegetated to vegetated marsh ratios (UVVR) suggesting these metrics are broadly applicable indicators of microtidal marsh vulnerability. This effort has developed the UVVR metric using Landsat 8 satellite imagery for the coastal areas of the contiguous United States (CONUS). These datasets provide annual averages of 1) developed, 2) vegetated, 3) unvegetated fractional covers and 4) an unvegetated to vegetated ratio (UVVR) at 30-meter resolution over the coastal areas of the contiguous United States for the years 2014-2018. Additionally, multi-year average values of vegetated fractional cover... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: GeoTIFF, Pacific Ocean, USGS:5f5aa0f282cefd9f20868a81, United States, coastal ecosystems, All tags... coastal processes, inlandWaters, marsh health, marsh stress, resilience, salt marsh, sedimentation, society, vegetation, vulnerability, wetland ecosystems, wetland functions, Fewer tags Tijuana: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Sea-Level Rise and Coasts, Southwest CASC, Tijuana, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags Change in salinity exposure of salt marsh units in Edwin B. Forsythe National Wildlife Refuge, New Jersey during Hurricane Sandy As part of the Hurricane Sandy Science Plan, the U.S. Geological Survey is expanding National Assessment of Coastal Change Hazards and forecast products to coastal wetlands. The intent is to provide federal, state, and local managers with tools to estimate the vulnerability of coastal wetlands to various factors and to evaluate their ecosystem service potential. For this purpose, the response and resilience of coastal wetlands to physical factors need to be assessed in terms of the ensuing change to their vulnerability and ecosystem services. Edwin B. Forsythe National Wildlife Refuge (EBFNWR), New Jersey, was selected as a pilot study area. As part of this data synthesis effort, hydrodynamic and sediment transport... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, Map Service; Tags: Atlantic Ocean, Barnegat Bay, Edwin B. Forsythe National Wildlife Refuge, Great Bay, Little Egg Island, All tags... New Jersey, United States, coastal ecosystems, coastal processes, contamination, ecological processes, environment, environment, environmental assessment, estuary, inlandWaters, marsh health, oceans, polygon shapefile, resilience, salinity, salinity, salinity exposure, salt marsh, vegetation, vegetation, vulnerability, wetland ecosystems, wetland functions, Fewer tags Exposure potential of saltmarsh units in Edwin B. Forsythe National Wildlife Refuge to environmental health stressors (polygon shapefile) Natural and anthropogenic contaminants, pathogens, and viruses are found in soils and sediments throughout the United States. Enhanced dispersion and concentration of these environmental health stressors in coastal regions can result from sea level rise and storm-derived disturbances. The combination of existing environmental health stressors and those mobilized by natural or anthropogenic disasters could adversely impact the health and resilience of coastal communities and ecosystems. This dataset displays the exposure potential to environmental health stressors in the Edwin B. Forsythe National Wildlife Refuge (EBFNWR), which spans over Great Bay, Little Egg Harbor, and Barnegat Bay in New Jersey, USA. Exposure... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, Map Service; Tags: Atlantic Ocean, Barnegat Bay, Edwin B. Forsythe National Wildlife Refuge, Great Bay, Little Egg Island, All tags... New Jersey, United States, coastal ecosystems, coastal processes, contaminant transport, contamination, ecological processes, ecotoxicology, environment, environmental assessment, estuary, facility registry service, inlandWaters, marsh health, oceans, polygon shapefile, resilience, salt marsh, sediment, sedimentation, toxic release inventory, vegetation, vulnerability, wetland ecosystems, wetland ecosystems, wetland functions, Fewer tags Unvegetated to vegetated marsh ratio in Fire Island National Seashore and Central Great South Bay salt marsh complex, New York Unvegetated to vegetated marsh ratio (UVVR) in the Fire Island National Seashore and Central Great South Bay salt marsh complex, is computed based on conceptual marsh units defined by Defne and Ganju (2018). UVVR was calculated based on U.S. Department of Agriculture National Agriculture Imagery Program (NAIP) 1-meter resolution imagery. Through scientific efforts initiated with the Hurricane Sandy Science Plan, the U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands, including the Fire Island National Seashore and Central Great South Bay salt marshes, with the intent of providing Federal, State, and local managers with tools to estimate... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Ocean, Bellport Bay, Ecology, Fire Island National Seashore, Geography, All tags... Geomorphology, Great South Bay, Information Sciences, LTER, Long-Term Ecological Research, Marine Geology, Narrow Bay, New York, Nicoll Bay, Patchogue Bay, Remote Sensing, Robert Moses State Park, Suffolk County, UVVR, United States, Water Island, coastal ecosystems, coastal processes, environment, estuary, geospatial datasets, inlandWaters, marsh health, oceans, salt marsh, vegetation, wetland ecosystems, wetland functions, Fewer tags Unvegetated to vegetated ratio 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, UVVR, 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, vegetation, wetland ecosystems, wetland functions, Fewer tags Elevation of marsh units in Blackwater salt marsh complex, Chesapeake Bay, Maryland Note: The 2022 data release "Geospatial Characterization of Salt Marshes in Chesapeake Bay" incorporates the Blackwater region salt marsh dataset. (https://doi.org/10.5066/P997EJYB) This data release contains coastal wetland synthesis products for the geographic region of Blackwater salt marsh complex, Chesapeake Bay, Maryland. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and others, 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... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Blackwater National Wildlife Refuge, Chesapeake Bay, Dorchester County, Fishing Bay, Honga River, All tags... Maryland, Nanticoke River, United States, Wicomico County, coastal ecosystems, coastal processes, elevation, environment, estuary, geospatial datasets, inlandWaters, marsh health, oceans, salt marsh, vegetation, wetland ecosystems, wetland functions, Fewer tags Rate of shoreline change of marsh units in eastern Long Island salt marsh complex, New York (ver. 2.0, March 2024) This data release contains coastal wetland synthesis products for the geographic region of eastern Long Island, New York, including the north and south forks, Gardiners Island, and Fishers Island. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, mean tidal range, and shoreline change rate are calculated for smaller units delineated from a Digital Elevation Model, providing the spatial variability of physical factors that influence wetland health. Through scientific efforts initiated with the Hurricane Sandy Science Plan, the U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Ocean, Long Island Sound, Moriches Bay, New York, Peconic Bay, All tags... Shinnecock Bay, Suffolk County, United States, accretion, coastal ecosystems, coastal processes, coastline, environment, estuary, geospatial datasets, inlandWaters, marsh health, oceans, polygon shapefile, resilience, salt marsh, sediment, shoreline, tides (oceanic), vegetation, vulnerability, wetland ecosystems, wetland functions, Fewer tags Vegetated fraction in coastal wetlands along the U.S. Atlantic Coast (16-bit GeoTIFF) Prior research has shown that sediment budgets, and therefore stability, of microtidal marsh complexes scale with areal unvegetated to vegetated marsh ratios (UVVR) suggesting these metrics are broadly applicable indicators of microtidal marsh vulnerability. This effort has developed the UVVR metric using Landsat 8 satellite imagery for the coastal areas of the contiguous United States (CONUS). These datasets provide annual averages of 1) developed, 2) vegetated, 3) unvegetated fractional covers and 4) an unvegetated to vegetated ratio (UVVR) at 30-meter resolution over the coastal areas of the contiguous United States for the years 2014-2018. Additionally, multi-year average values of vegetated fractional cover... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: GeoTIFF, Pacific Ocean, USGS:5f5b813d82cefd9f2087a728, United States, coastal ecosystems, All tags... coastal processes, inlandWaters, marsh health, marsh stress, resilience, salt marsh, sedimentation, society, vegetation, vulnerability, wetland ecosystems, wetland functions, Fewer tags Barcode Value for GCPO LCC Estuarine Tidal Marsh Description of condition index value scores for estuarine tidal marsh along and within 10 km of the GCPO LCC Gulf Coast subgeography. A series of raster calculations were used in a dichotomous decision-based framework to compile a per-pixel draft condition index value at a 10 m resolution for GCPO estuarine tidal marsh based on the number of configuration and condition endpoints met within each marsh pixel. Pixels not identified as a estuarine marsh but that were identified as having the potential to be marsh were given a score of 1, provided the pixels were not classified as developed. Potential estuarine tidal marsh pixels were derived from a combination of potential estuarine tidal marsh classes in the Landfire... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: AQUATIC ECOSYSTEMS, AQUATIC ECOSYSTEMS, BIOSPHERE, BIOSPHERE, BIOSPHERE, All tags... BIOSPHERE, BIOSPHERE, BIOSPHERE, COASTAL, COASTAL, COASTAL, COASTAL, Conservation planning, Data, EARTH SCIENCE, EARTH SCIENCE, EARTH SCIENCE, EARTH SCIENCE, EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS, EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL > MUDFLAT, EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > ESTUARY, EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > LAND RESOURCES, EARTH SCIENCE > LAND SURFACE > LANDSCAPE > LANDSCAPE ECOLOGY, EARTH SCIENCE > LAND SURFACE > LANDSCAPE > RECLAMATION/REVEGETATION/RESTORATION, ECOSYSTEMS, ECOSYSTEMS, ECOSYSTEMS, ECOSYSTEMS, ECOSYSTEMS, ECOSYSTEMS, ESTUARINE WETLANDS, GCPO, Gulf Coast, Gulf Coastal Plains and Ozarks, Gulf of Mexico, Informing Conservation Delivery, LCC, LCC Network Science Catalog, MARINE ECOSYSTEMS, MARINE ECOSYSTEMS, MARINE ECOSYSTEMS, MARINE ECOSYSTEMS, Population and Habitat Evaluation/Projection, SALT MARSH, SAV/SEA GRASS BED, WETLANDS, WETLANDS, biota, completed, condition index value, conservation planning, desired ecological state, ecological assessment, environment, estuarine, geoscientificInformation, planningCadastre, tidal marsh, wetland, Fewer tags Conceptual marsh units of Hudson Valley and New York City salt marsh complex, New York This data release contains coastal wetland synthesis products for the geographic region of Hudson Valley and New York City, New York. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and mean tidal range, are calculated for smaller units delineated from a Digital Elevation Model, providing the spatial variability of physical factors that influence wetland health. Through scientific efforts initiated with the Hurricane Sandy Science Plan, 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... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Dutchess County, Hudson River, LTER, Long-Term Ecological Research, Lower Bay, All tags... New York, Putnam County, Queens County, Staten Island, United States, Upper Bay, Westchester County, coastal ecosystems, coastal processes, environment, estuary, geospatial datasets, inlandWaters, marsh health, oceans, salt marsh, vegetation, wetland ecosystems, wetland functions, Fewer tags Elevation of marsh units in Hudson Valley and New York City salt marsh complex, New York This data release contains coastal wetland synthesis products for the geographic region of Hudson Valley and New York City, New York. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and mean tidal range, are calculated for smaller units delineated from a Digital Elevation Model, providing the spatial variability of physical factors that influence wetland health. Through scientific efforts initiated with the Hurricane Sandy Science Plan, 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... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Dutchess County, Hudson River, LTER, Long-Term Ecological Research, Lower Bay, All tags... New York, Putnam County, Queens County, Staten Island, United States, Upper Bay, Westchester County, coastal ecosystems, coastal processes, 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 north shore Long Island salt marsh complex, New York This data release contains coastal wetland synthesis products for the geographic region of north shore Long Island, New York. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and mean tidal range, are calculated for smaller units delineated from a Digital Elevation Model, providing the spatial variability of physical factors that influence wetland health. Through scientific efforts initiated with the Hurricane Sandy Science Plan, 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... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Ocean, LTER, Long Island Sound, Long-Term Ecological Research, Nassau County, All tags... New York, Suffolk County, United States, 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 Wave thrust values at point locations along the shorelines of Massachusetts and Rhode Island This product provides spatial variations in wave thrust along shorelines in Massachusetts and Rhode Island. Natural features of relevance along the State coast are salt marshes. In recent times, marshes have been eroding primarily through lateral erosion. Wave thrust represents a metric of wave attack acting on marsh edges. The wave thrust is calculated as the vertical integral of the dynamic pressure of waves. This product uses a consistent methodology with sufficient spatial resolution to include the distinct features of each marsh system. Waves under different climatological wind forcing conditions were simulated using the coupled ADCIRC/SWAN model system. The estuarine and bay areas are resolved with horizontal... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Coastal Wetlands, Coastal processes, Geomorphology, Massachusetts, Mathematical modeling, All tags... Ocean waves, Rhode Island, Salt marsh, Shoreline, United States of America, Vulnerability, Wave attack, Wave thrust, biota, wetland ecosystems, Fewer tags Morro Bay, California: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Morro Bay, Sea-Level Rise and Coasts, Southwest CASC, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags Pt. Mugu, California: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Pt. Mugu, Sea-Level Rise and Coasts, Southwest CASC, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags 1 2 3 4 5 6 »