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#1 Federal

Administrative Boundaries Centroids of National Park System Units

Organization: Department of the Interior
Dataset Last Updated: July 08, 2026 at 12:00 AM

National Park Service Unit Centroid Points.

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Search relevance: 1.00 | Views last month: 25 | Catalog Last Checked: August 01, 2026 at 04:09 AM

#2 Federal

National Park System Current Tract Polygons

Organization: Department of the Interior
Dataset Last Updated: July 08, 2026 at 12:00 AM

National Park Service Unit tract polygons

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Search relevance: 1.00 | Views last month: 19 | Catalog Last Checked: August 20, 2026 at 12:54 AM

#3 Federal

Seabeach Amaranth Presence-Absence Data, Assateague Island National Seashore, 2014

Organization: Department of the Interior
Dataset Last Updated: April 26, 2023 at 12:00 AM

Seabeach amaranth (Amaranthus pumilus) is a federally threatened plant species that was once prevalent on beaches of the U.S. mid-Atlantic coast. To re-establish a population at Assateague Island...

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Search relevance: 1.00 | Views last month: 18 | Catalog Last Checked: August 01, 2026 at 06:08 AM

#4 Federal

20200110-DO-NOT-USE-Test-Copy-NGDAID-16-Administrative Boundaries of National Park System Units 9/30/2019 - National Geospatial Data Asset (NGDA) NPS National Parks Dataset-DO-NOT-USE

Organization: Federal Geographic Data Committee
Dataset Last Updated: September 30, 2019

National Park Service unit boundaries.

ZIP

Search relevance: 1.00 | Views last month: 16 | Catalog Last Checked: August 03, 2026 at 08:35 AM

#5 Federal

Trackline navigation for swath interferometric bathymetry data collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri polyline shapefile, GCS WGS 84)

Organization: Department of the Interior
Dataset Last Updated: November 19, 2021 at 12:00 AM

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy in the fall of 2012. The U.S. Geological Survey...

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Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: August 01, 2026 at 05:04 AM

#6 Federal

PNG formatted images of Multi-channel streamer seismic-reflection profiles collected by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA, 2014

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy. A U.S. Geological Survey cruise was conducted in the...

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Search relevance: 1.00 | Views last month: 9 | Catalog Last Checked: August 01, 2026 at 05:33 AM

#7 Federal

2-meter Swath interferometric backscatter data collected in 2014 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (8-bit GeoTIFF, UTM Zone 18N, WGS 84)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy. A U.S. Geological Survey cruise was conducted in the...

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XML

Search relevance: 1.00 | Views last month: 9 | Catalog Last Checked: August 01, 2026 at 04:45 AM

#8 Federal

nos_5mint: 5-meter bathymetry grid produced from 23 multibeam hydrographic surveys collected off the Delmarva Peninsula by the National Oceanic and Atmospheric Administration's National Ocean Service between 2006 and 2011 (Esri binary grid, UTM Zone 18N, WGS 84)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

Between 2006 and 2011 Science Applications International Corporation (SAIC), under contract by the National Oceanic and Atmospheric Administration's (NOAA) National Ocean Service (NOS), collected...

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Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: August 01, 2026 at 03:45 AM

#9 Federal

Trackline navigation for Swath interferometric data collected by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA, 2014 (Esri polyline shapefile, GCS WGS 84)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy. A U.S. Geological Survey cruise was conducted in the...

XML
XML

Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: August 01, 2026 at 05:20 AM

#10 Federal

Trackline navigation for multi-channel streamer seismic-reflection profiles collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri polyline shapefile, GCS WGS 84)

Organization: Department of the Interior
Dataset Last Updated: November 19, 2021 at 12:00 AM

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy in the fall of 2012. The U.S. Geological Survey...

XML
XML

Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: August 01, 2026 at 05:14 AM

#11 Federal

Surface Elevation Table Measurements Along the Atlantic Seaboard, 2026 Cumulative Data Package

Organization: Department of the Interior
Dataset Last Updated: January 28, 2026 at 12:00 AM

The National Park Service (NPS) in response to the growing evidence and awareness of the effects of climate change on federal lands determined that monitoring wetland elevation change is a top...

Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 01, 2026 at 04:00 AM

#12 Federal

Total Mercury Concentrations in Dragonfly Larvae from U.S. National Parks (ver. 11.0, January 2026)

Organization: Department of the Interior
Dataset Last Updated: January 05, 2026 at 12:00 AM

Comma-separated values (.csv) file containing data related to mercury concentrations in dragonfly samples from U.S. National Parks, Protected Places, and other federal lands collected as part of...

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Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 01, 2026 at 04:56 AM

#13 Federal

Location and analyses of sediment samples collected by the U.S. Geological Survey in 2015 along the Delmarva Peninsula, MD and VA (Esri point shapefile and CSV file, Geographic, WGS 84)

Organization: Department of the Interior
Dataset Last Updated: November 19, 2021 at 12:00 AM

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy in the fall of 2012. The U.S. Geological Survey...

XML
XML

Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 01, 2026 at 03:54 AM

#14 Federal

Trackline navigation for Edgetech 4200 sidescan sonar data collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri polyline shapefile, GCS WGS 84)

Organization: Department of the Interior
Dataset Last Updated: November 19, 2021 at 12:00 AM

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy in the fall of 2012. The U.S. Geological Survey...

XML
XML

Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 01, 2026 at 04:14 AM

#15 Federal

Estuarine Nutrient Enrichment Tier-3 Seagrass Monitoring Data for Assateague Island National Seashore through 2021 (Certified)

Organization: Department of the Interior
Dataset Last Updated: November 15, 2022 at 12:00 AM

As part of the Northeast Coastal and Barrier Network's Estuarine Nutrient Enrichment Monitoring program, Network staff and cooperators continued to monitor seagrass cover and health at several...

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CSV

Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 01, 2026 at 03:57 AM

#16 Federal

2025 Estuarine Nutrient Enrichment Water Quality Monitoring Data Package

Organization: Department of the Interior
Dataset Last Updated: April 01, 2026 at 12:00 AM

Residential, agricultural, and urban expansion in the Northeast has resulted in an increase in anthropogenic nutrient loading to the region’s coastal zone. Estuaries can generally assimilate some...

Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 01, 2026 at 03:59 AM

#17 Federal

Bathymetry Data, 75cm-Resolution, Assateague Island National Seashore, 2014-2015

Organization: Department of the Interior
Dataset Last Updated: February 01, 2019 at 12:00 AM

This dataset contains bathymetry data collected during acoustic surveys completed along the 58‐km long Assateague barrier island stretching from the Ocean City inlet in Maryland, down past...

Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 01, 2026 at 04:07 AM

#18 Federal

Reflection point navigation for multi-channel streamer seismic-reflection profiles collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri point shapefile, GCS WGS 84)

Organization: Department of the Interior
Dataset Last Updated: November 19, 2021 at 12:00 AM

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy in the fall of 2012. The U.S. Geological Survey...

XML
XML

Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 01, 2026 at 04:09 AM

#19 Federal

Shot point navigation at even 500 shot intervals for EdgeTech SB-512i chirp seismic-reflection data collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri point shapefile, GCS WGS 84)

Organization: Department of the Interior
Dataset Last Updated: November 19, 2021 at 12:00 AM

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy in the fall of 2012. The U.S. Geological Survey...

XML
XML

Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 01, 2026 at 05:30 AM

#20 Federal

Trackline navigation for EdgeTech SB-512i chirp seismic-reflection data collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri polyline shapefile, GCS WGS 84)

Organization: Department of the Interior
Dataset Last Updated: November 19, 2021 at 12:00 AM

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy in the fall of 2012. The U.S. Geological Survey...

XML
XML

Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 01, 2026 at 05:34 AM

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Administrative Boundaries Centroids of National Park System Units

National Park System Current Tract Polygons

Seabeach Amaranth Presence-Absence Data, Assateague Island National Seashore, 2014

20200110-DO-NOT-USE-Test-Copy-NGDAID-16-Administrative Boundaries of National Park System Units 9/30/2019 - National Geospatial Data Asset (NGDA) NPS National Parks Dataset-DO-NOT-USE

Trackline navigation for swath interferometric bathymetry data collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri polyline shapefile, GCS WGS 84)

PNG formatted images of Multi-channel streamer seismic-reflection profiles collected by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA, 2014

2-meter Swath interferometric backscatter data collected in 2014 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (8-bit GeoTIFF, UTM Zone 18N, WGS 84)

nos_5mint: 5-meter bathymetry grid produced from 23 multibeam hydrographic surveys collected off the Delmarva Peninsula by the National Oceanic and Atmospheric Administration's National Ocean Service between 2006 and 2011 (Esri binary grid, UTM Zone 18N, WGS 84)

Trackline navigation for Swath interferometric data collected by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA, 2014 (Esri polyline shapefile, GCS WGS 84)

Trackline navigation for multi-channel streamer seismic-reflection profiles collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri polyline shapefile, GCS WGS 84)

Surface Elevation Table Measurements Along the Atlantic Seaboard, 2026 Cumulative Data Package

Total Mercury Concentrations in Dragonfly Larvae from U.S. National Parks (ver. 11.0, January 2026)

Location and analyses of sediment samples collected by the U.S. Geological Survey in 2015 along the Delmarva Peninsula, MD and VA (Esri point shapefile and CSV file, Geographic, WGS 84)

Trackline navigation for Edgetech 4200 sidescan sonar data collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri polyline shapefile, GCS WGS 84)

Estuarine Nutrient Enrichment Tier-3 Seagrass Monitoring Data for Assateague Island National Seashore through 2021 (Certified)

2025 Estuarine Nutrient Enrichment Water Quality Monitoring Data Package

Bathymetry Data, 75cm-Resolution, Assateague Island National Seashore, 2014-2015

Reflection point navigation for multi-channel streamer seismic-reflection profiles collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri point shapefile, GCS WGS 84)

Shot point navigation at even 500 shot intervals for EdgeTech SB-512i chirp seismic-reflection data collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri point shapefile, GCS WGS 84)

Trackline navigation for EdgeTech SB-512i chirp seismic-reflection data collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri polyline shapefile, GCS WGS 84)