• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2021-01-01T00:00:00.000+00:00

These data were automated to provide an accurate high-resolution historical shoreline of Saint Croix River, ME suitable as a geographic information system (GIS) data layer. These data are...

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• Organization: Department of the Interior
• Updated: 1995-07-06T00:00:00Z

This file contains the water quality data summarized in the 1995 report entitled: Baseline Water Quality Inventory, Saint Croix National Scenic River National Wild And Scenic River. The data and...

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• Organization: Department of the Interior
• Updated: 1995-06-30T00:00:00Z

This file contains the locations at which water quality data was summarized in the 1995 report entitled: Baseline Water Quality Inventory, Saint Croix National Scenic River National Wild And...

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• Organization: Department of the Interior
• Updated: 2001-01-01T00:00:00Z

This data set contains small-scale base GIS data layers compiled by the National Park Service Servicewide Inventory and Monitoring Program and Water Resources Division for use in a ...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2019-08-01T00:00:00.000+00:00

This geospatial dataset depicts a sewage no-discharge zone established under Clean Water Act Section 312. The area(s) depicted are zones where the discharge of any sewage, treated or untreated,...

• Organization: Department of the Interior
• Updated: 2020-08-31T00:00:00Z

This dataset contains stable isotope (δ13C) and radioisotope (Δ14C) compositions of dissolved inorganic carbon, dissolved organic carbon, particulate organic carbon, and bed material organic...

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• Organization: Department of the Interior
• Updated: 2025-05-16T00:00:00Z

Benthic macroinvertebrates have long been used as an indicator of water quality impairment in streams and rivers. Indices of Biotic Integrity (IBI) calculated from macroinvertebrate diversity and...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2005-10-01T00:00:00.000+00:00

U.S.V.I. watershed outflow points; areas of maximum flow accumulation within hydrological basins.

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• Organization: Department of the Interior
• Updated: 2020-08-20T00:00:00Z

This dataset describes the concentration and morphology of microplastics in the St. Croix National Scenic Riverway and Mississippi National River and Recreation Area, Wisconsin and Minnesota....

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• Organization: Department of the Interior
• Updated: 2022-06-07T00:00:00Z

These data were converted from the originally delivered Microsoft Access PLOTs database from the Vegetation Mapping Inventory Project of Saint Croix National Scenic Riverway. These...

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• Organization: Department of the Interior
• Updated: 2021-04-09T00:00:00Z

The geodatabase contains 13 relate tables that together provide updated and synchronized classifications to an existing vegetation map layer for each of the nine park units in the Great Lakes...

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• Organization: Department of the Interior
• Updated: 2025-01-30T00:00:00Z

Hydrographic and Impairment Statistics (HIS) is a National Park Service (NPS) Water Resources Division (WRD) project established to track certain goals created in response to the Government...

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• Organization: Department of the Interior
• Updated: 2023-10-06T00:00:00Z

Hydrographic and Impairment Statistics (HIS) is a National Park Service (NPS) Water Resources Division (WRD) project established to track certain goals created in response to the Government...

• zip

• Organization: Department of the Interior
• Updated: 2023-10-06T00:00:00Z

Hydrographic and Impairment Statistics (HIS) is a National Park Service (NPS) Water Resources Division (WRD) project established to track certain goals created in response to the Government...

• zip

• Organization: Department of the Interior
• Updated: 2025-07-01T00:00:00Z

Forest vegetation provides an integrated measure of terrestrial ecosystem health by expressing information about the collective suite of drivers and stressors which act upon it. These include...

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• +6 more

• Organization: Department of the Interior
• Updated: 2020-11-10T00:00:00Z

Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and...

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• Organization: Department of the Interior
• Updated: 2020-08-19T00:00:00Z

Comma-separated values (.csv) files containing data related to a National-scale assessment of mercury bioaccumulation in the US National Parks using dragonfly larvae as biosentinels through a...

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• Organization: Department of the Interior
• Updated: 2026-01-05T00:00:00Z

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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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2026-01-20T00:00:00.000+00:00

This collection includes census based carbonate budget data that are collected in coral reef habitats in the Atlantic Ocean. These habitats include sites around Puerto Rico, Florida, and the...

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• Organization: Department of the Interior
• Updated: 2026-01-20T00:00:00Z

National Park Service Unit tract polygons

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