Catalog - Data.gov

#1 Federal

National Lakes Assessment 2022 Datafiles for Report " National Lakes Assessment: The Fourth Collaborative Survey of Lakes in the United States”

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: August 26, 2024

The National Lakes Assessment (NLA) is a statistical survey of the condition of our nation's lakes, ponds, and reservoirs. It is designed to provide information on the extent of lakes that support...

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Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: April 21, 2026 at 08:06 PM

#2 Federal

Water Stable Isotope data from NARS (NRSA and NLA)

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: June 02, 2025

Water stable isotope data measured on water chemistry samples collected as part of the National Aquatic Resource Surveys (NARS). One file is for the National Rivers and Streams Assessment (NRSA),...

Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: April 21, 2026 at 08:05 PM

#3 Federal

NARS NRSA data

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: November 09, 2023

NARS data used in the paper. This dataset is associated with the following publication: Fergus, C., J. Brooks, P. Kaufmann, A. Herlihy, R. Hill, R. Mitchell, and P. Ringold. Disentangling...

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Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: April 21, 2026 at 08:05 PM

#4 Federal

USEPA National Aquatic Resource National Rivers and Streams Assessment 2008–2009 (data and metadata Survey files); USEPA National Aquatic Resource National Rivers and Streams Assessment 2013–2014 (data and metadata Survey files).

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: September 01, 2023

USEPA National Aquatic Resource Surveys 2008-9 and 2013-14 Physical Habitat and Landscape data for Rivers and Streams (NRSA). Daily flow and peak flow from the National Water Information System...

Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: April 21, 2026 at 08:05 PM

#5 Federal

NRSA2324 Nitrate Stable Isotope Ratios

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: June 02, 2025

Stable Isotope Ratios of Nitrate from the National Aquatic Resource Survey 2023 and 2024. We analyzed 163 samples with nitrate concentrations above 2 mg-N/L for oxygen and nitrogen isotopes of...

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Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: April 21, 2026 at 08:07 PM

#6 Federal

Quantitative Assessment of Stream and River Physical Habitat Condition

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: September 01, 2017

The 4 resource surveys (coastal, rivers and streams, lakes and reservoirs, and wetlands) each have datasets covering the biological, chemical, physical habitat, hydrologic and watershed data....

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Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: April 21, 2026 at 08:02 PM

#7 Federal

Lake and landscape dataset used for analyses in Natural and anthropogenic controls on lake water-level decline and evaporation-to-inflow ratio in the conterminous US study-Fergus Limnology and Oceanography 2022

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: April 28, 2022

Lake and landscape data were compiled from the US Environmental Protection Agency National Lakes Assessment 2007 and 2012 surveys and LakeCat geospatial dataset. Additional climate variables were...

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