489 datasets found
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Federal
Sewage pollution source tracking at Puako and other coastal waters of South Kohala, Hawaii Island, 2007-07-31 to 2017-09-03 (NCEI Accession 0186217)
National Oceanic and Atmospheric Administration, Department of Commerce —
This data set contains sewage pollution data in the form of in situ measurements and deductions produced in the laboratory from in field samples. The original files... -
Federal
Nutrient Impaired 303(d) Streams for the Pacific Northwest
Department of the Interior —
Under section 303(d) of the 1972 Clean Water Act, states, territories, and authorized tribes are required to develop lists of impaired waters. These impaired waters... -
Federal
Annual estimated effect of best management practice implementation on water quality in the Chesapeake Bay watershed from 1985 to 2014
Department of the Interior —
This metadata record documents a comma-delimited table representing scenario output from the Chesapeake Bay Program Phase 5.3.2 Watershed Model. The annual effect of... -
Federal
Commercial Nitrogen Fertilizer Purchased
U.S. Environmental Protection Agency —
Amounts of fertilizer nitrogen (N) purchased by states in individual years 2003, 2005, 2007, 2009 and 2011, and the % change in average amounts purchased per year... -
Federal
Application of fertilizer nitrogen to nonfarm land in the United States Pacific Northwest for 2002
Department of the Interior —
This spatial data set was created by the U.S. Geological Survey (USGS) to represent the amount of fertilizer nitrogen that was applied to nonfarm land in the Pacific... -
Federal
Chesapeake Bay Nontidal Network 1985-2018: WRTDS output data
Department of the Interior —
Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in rivers across the Chesapeake Bay watershed have been calculated using monitoring data... -
Federal
Total atmospheric deposition of oxidized and reduced nitrogen in the United States Pacific Northwest for 2002
Department of the Interior —
This spatial data set was created by the U.S. Geological Survey (USGS) to represent the amount of wet and dry deposition of oxidized and reduced nitrogen in the... -
Federal
Total mercury and methylmercury concentrations in biota from the Hells Canyon Reservoir Complex on the Snake River, Idaho and Oregon, USA
Department of the Interior —
Comma-separated values (.csv) file containing data related to mercury in biota collected from the Hells Canyon Reservoir Complex on the Snake River, Idaho and Oregon. -
Federal
Atmospheric Deposition Modeling Results
U.S. Environmental Protection Agency —
This asset provides data on model results for dry and total deposition of sulfur, nitrogen and base cation species. Components include deposition velocities, dry... -
Federal
Chesapeake Bay River Input Monitoring Network 1985-2017: Monthly loads
Department of the Interior —
Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in major rivers across the Chesapeake Bay watershed have been calculated using monitoring... -
Federal
Data for Grassland-to-cropland conversion increased soil, nutrient, and carbon losses in the US Midwest between 2008 and 2016
U.S. Environmental Protection Agency —
These are the soil quality data for each county (listed by fips code) for each scenario. This dataset is associated with the following publication: Zhang, X., T.... -
Federal
Nitrogen inputs and stream N concentrations NRSA 2008-2009
U.S. Environmental Protection Agency —
This is a combined dataset that includes data for 1966 of the 2008-2009 National Rivers and Streams Assessment watersheds. The data includes watershed N inputs and... -
Federal
Chesapeake Bay Nontidal Network 1985-2020: Monthly loads (ver. 2.0, January 2023)
Department of the Interior —
Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in major rivers across the Chesapeake Bay watershed have been calculated using monitoring... -
Federal
Specific Water Quality Sites for Wasatch 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
Total and aqueous arsenic concentrations, physiochemical characteristics, and ancillary data of groundwater from newly constructed drinking water wells in central, northwest, and northeast Minnesota, 2014-2016, version 2.0, July 2018
Department of the Interior —
This dataset provides aqueous nitrate+nitrite, aqueous manganese, aqueous iron, and total sulfate measurements in groundwater samples from 254 newly constructed... -
Federal
Data associated with nutrient diffusing substrate experiments conducted in Lake Michigan and Lake Erie (2017)
Department of the Interior —
Metals are used in primary producer metabolic pathways, such as photosynthesis and the acquisition of macronutrients nitrogen (N) and phosphorus (P), yet we often do... -
Federal
Experimental evaluation of nutrient and disease treatment effects on Acropora cervicornis (NCEI Accession 0299892)
National Oceanic and Atmospheric Administration, Department of Commerce —
Acropora cervicornis fragments of each genotype were evenly and haphazardly assigned to two nutrient treatments: ambient nutrients (Ambient) or elevated ammonium... -
Federal
Chesapeake Bay River Input Monitoring Network 1985-2022: WRTDS input data
Department of the Interior —
Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in major rivers across the Chesapeake Bay watershed have been calculated using monitoring... -
Federal
Upper Chesapake Bay LTAR Dataset: NFARM, Inorganic N, & C Production, 2016-2018
Department of Agriculture —
In situ denitrification rates in intact soil cores from the Upper Chesapeake Bay (UCB) LTAR site in PA quantified by directly measuring dinitrogen (N2) and nitrous... -
Federal
Rumsey and Walker_AMT_2016_Figure 2.xlsx
U.S. Environmental Protection Agency —
Figure summarizes uncertainty (error) in hourly gradient flux measurements by individual analyte. Flux uncertainty is derived from estimates of uncertainty in...
489 datasets found