Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Try the next-generation Data Catalog at catalog-beta.data.gov and help shape it with your feedback.

  • Feedback

    • The StreamCat Dataset: Accumulated Attributes for NHDPlusV2 (Version 2.1) Catchments for the Conterminous United States: National Nutrient Inventory

    Metadata Updated: December 8, 2025

    These data represent the National Nutrient Inventory's quantification of major inputs (farm fertilizer, urban fertilizer, livestock manure, human waste, deposition, biological crop nitrogen (N) fixation, and point source loads) and outputs (crop removal by harvest) of N and phosphorus (P) within individual local NHDPlusV2 catchments and contributing watersheds. The dataset also includes the following metrics derived from these inputs and outputs: legacy agricultural surplus, annual agricultural surplus, and total inputs. All metrics are available as an annual time series from 1987-2017, except for N deposition (1990-2017), P deposition (1997-2013), and point source loads (1978, 1980, 1982, 1984, 1986, 1988, 1990, 1992, 1996, 2000, 2004, 2008, 2012). StreamCatNNI metrics are in kilograms. For more information on National Nutrient Inventory metrics, see: https://www.epa.gov/water-research/national-nutrient-inventory-portfolio.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    References

    https://www.epa.gov/national-aquatic-resource-surveys/streamcat-dataset#access-streamcat-data

    Dates

    Metadata Created Date December 2, 2025
    Metadata Updated Date December 8, 2025
    Metadataupdated 2025-12-08

    Metadata Source

    Harvested from StreamCat Harvest

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 2, 2025
    Metadata Updated Date December 8, 2025
    Publisher U.S. Environmental Protection Agency, Office of Water
    Maintainer
    Identifier {b0aae785-22af-4749-9bd5-65b4ca4fc0ec}
    Data First Published 2025-11-23
    Language en-us
    Data Last Modified 2025-11-23
    Rights public (Data asset is or could be made publicly available to all without restrictions)
    Category environment
    Public Access Level public
    Bureau Code 020:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://edg.epa.gov/data/Public/OW/metadata/StreamCat.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Data Quality True
    Data Dictionary https://www.epa.gov/national-aquatic-resource-surveys/streamcat-metrics-and-definitions
    Harvest Object Id e8ac2d4b-5c5c-417a-be3e-db067e6f6a57
    Harvest Source Id e7d3a7e2-50b8-4149-949c-cf56c38224b3
    Harvest Source Title StreamCat Harvest
    Homepage URL https://www.epa.gov/national-aquatic-resource-surveys/streamcat-dataset
    License https://edg.epa.gov/EPA_Data_License.html
    Metadataupdated 2025-12-08
    Old Spatial -125.0,24.5,-66.5,49.5
    Program Code 020:072
    Related Documents https://www.epa.gov/national-aquatic-resource-surveys/streamcat-dataset#access-streamcat-data
    Source Datajson Identifier True
    Source Hash 5d0a333c410aa9b64e2177be84d3e69fb9ea125fe708e5e82519bc7d79eeb4fc
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -125.0, 24.5, -125.0, 49.5, -66.5, 49.5, -66.5, 24.5, -125.0, 24.5}
    Temporal 2015-04-23/2015-04-23

    Didn't find what you're looking for? Suggest a dataset here.