489 datasets found
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Federal
NIST Handbook of Basic Atomic Spectroscopic Data - SRD 108
National Institute of Standards and Technology —
This handbook provides a selection of the most important and frequently used atomic spectroscopic data in an easily accessible format. The compilation includes energy... -
Federal
Nitrogen Screening Project - N Sources
Department of the Interior —
This geodatabase includes NH3 (as N) and NOx (as N) emissions data for point sources as well as Total N emissions as represented in the 2002 National Emissions... -
Federal
Mineral Commodity Summaries 2024 - NITROGEN (FIXED)-AMMONIA Data Release
Department of the Interior —
This data release contains the U.S. salient statistics and world production data extracted from the NITROGEN (FIXED)-AMMONIA data sheet of the USGS Mineral Commodity... -
Federal
Specific Water Quality Sites for Davis County, Utah
Department of the Interior —
This map shows specific water-quality items and hydrologic data site information which come from QWDATA (Water Quality) and GWSI (Ground Water Information System).... -
Federal
NIST Atomic Spectral Line Broadening Bibliographic Database
National Institute of Standards and Technology —
This interactive database, maintained by the NIST Atomic Spectroscopy Data Center, contains more than 6000 references, dating from 1889 through current year and is... -
Federal
Hui O Ka Wai Ola Water Quality Data
National Oceanic and Atmospheric Administration, Department of Commerce —
The goal of the Hui O Ka Wai Ola (Association Of The Living Waters) citizen-science based water quality program is to increase the capacity for monitoring water... -
Federal
Where have all the nutrients gone? Long-term Decoupling of Inputs and Outputs in the Willamette River Watershed, Oregon, USA
U.S. Environmental Protection Agency —
The following 4 tables accompany the peer-reviewed journal article GS Metson, J Lin, JE Compton, JA Harrison. Where have all the nutrients gone? Long-term Decoupling... -
Federal
Estimates of discharge from wastewater treatment plants for 1,518 U.S. Geological Survey study watersheds, 1978 through 2012
Department of the Interior —
This product consists of a table of annual discharge estimates in millions of gallons per day from wastewater treatment plants (WWTPs) for 1,518 watersheds in the... -
Federal
High-speed mapping of water isotopes and residence time in Cache Slough Complex, San Francisco Bay Delta, CA
Department of the Interior —
Real-time, high frequency (1-second sample interval) GPS location, water quality, and water isotope (δ2H, δ18O) data was collected in the Cache Slough Complex (CSC),... -
State
County Level Attainment Status of National Ambient Air Quality Standards (NAAQS)
State of New York —
A list by county of the current attainment status of the National Ambient Air Quality Standards (NAAQS). -
Federal
Lake_chlorophyll-a_upstream nutrients_CONUS
U.S. Environmental Protection Agency —
Publicly available data used to generate manuscript figures. This dataset is associated with the following publication: Dietrich, M., H. Golden, J. Christensen, C.... -
Federal
Sediment Dwelling Benthos as Indicator Species for Pollution Monitoring of Mamala Bay, Oahu, Hawaii, 1993-1994 (NODC Accession 9900121)
National Oceanic and Atmospheric Administration, Department of Commerce —
A multifaceted study of the sediment dwelling benthos was conducted in Mamala Bay to identify suitable species as indicators of sewage enrichment. There are five... -
Federal
Point-source contributions of total nitrogen and total phosphorus from facilities
Department of the Interior —
This data release consists of the data used to develop SPAtially Referenced Regression On Watershed(SPARROW) attributes models for estimating loads of total... -
Federal
Estimated Densities of Residential Septic Tanks across the Conterminous United States for 12-digit Hydrologic Unit Code 12 (HUC12), National Hydrography Dataset Plus Version 2 (NHDPlusV2) Catchment, and Block Group Scales
Department of the Interior —
This dataset provides estimates of residential septic tank densities at 12-digit Hydrologic Unit Code (HUC12), National Hydrography Dataset (NHD Plus version 2.1,... -
Federal
Alaska Geochemical Database Version 4.0 (AGDB4) including best value data compilations for rock, sediment, soil, mineral, and concentrate sample media
Department of the Interior —
The Alaska Geochemical Database Version 4.0 (AGDB4) contains geochemical data compilations in which each geologic material sample has one best value determination for... -
Federal
Nonattainment Area - Nitrogen Dioxide (NO2 - 1971 Standard)
Department of Transportation —
The Nonattainment Area - Nitrogen Dioxide (NO2-1971) dataset was updated on January 31, 2026 by the Environmental Protection Agency (EPA) and is part of the U.S.... -
Federal
SGS-LTER Ecosystem Stress Area - Soil Carbon & Nitrogen in shortgrass steppe on the Central Plains Experimental Range in Nunn, Colorado, USA 1991, ARS Study Number 3
Department of Agriculture —
This data package was produced by researchers working on the Shortgrass Steppe Long Term Ecological Research (SGS-LTER) Project, administered at Colorado State... -
Federal
Revised risk-based indices and proposed new composite watershed health measure and application thereof to the Upper Mississippi River Watershed, Ohio River Basin, and Maumee River Basin
U.S. Environmental Protection Agency —
The dataset includes names and geographic coordinates of gauge stations where flow and water quality (sediment, nitrogen, phosphorus) are measured in the Upper... -
Federal
Gulf Atlantic Coastal Plain LTAR Dataset: NFARM, Inorganic N, & C Production, 2016-2018
Department of Agriculture —
In situ denitrification rates in intact soil cores from the Gulf Atlantic Coastal Plain (GACP) LTAR site in GA quantified by directly measuring dinitrogen (N2) and...
489 datasets found