Catalog - Data.gov

Found 29 datasets matching "Nitrogen to Phosphorus Ratio".

Federal
ModMon Neuse River Estuary and Pamlico Sound Water Quality Monitoring from 1994-01-24 to 2022-01-22 (NCEI Accession 0294041)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2025-01-27T00:00:00.000+00:00
The Neuse River Estuary Water Quality Dataset is a compilation of the biological, chemical and physical water quality data that was collected along the length of the Neuse River Estuary, North...
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Search relevance: 84.86 | Views last month: 0
Federal
11: Streamwater sample constituent concentration outliers from 15 watersheds in Gwinnett County, Georgia for water years 2003-2020
- Organization: Department of the Interior
- Updated: 2023-04-04T00:00:00Z
This dataset contains a list of outlier sample concentrations identified for 17 water quality constituents from streamwater sample collected at 15 study watersheds in Gwinnett County, Georgia for...
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Search relevance: 63.31 | Views last month: 0
Federal
Datasets of Streamflow, Nutrient Concentrations, Loads and Trends for the Mississippi Ambient Water-Quality Network Stations, Water Years 2008 through 2018
- Organization: Department of the Interior
- Updated: 2023-02-17T00:00:00Z
This dataset utilized available water-quality data from the Mississippi Department of Environmental Quality and streamflow from the U.S. Geological Survey to estimate total nitrogen and total...
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Search relevance: 60.90 | Views last month: 0
Federal
NOAA RESTORE Science Program: Effects of nitrogen sources and plankton food-web dynamics on habitat quality for the larvae of Atlantic Bluefin Tuna in the Gulf of Mexico - biogeochemistry, dissolved inorganic nutrient, mesozooplankton, phytoplankton, and bacteria data from 2017-05-10 to 2018-05-19
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2021-06-10T00:00:00.000+00:00
This dataset presents results from surface-tethered drifting sediment traps, zooplankton net tows, dissolved inorganic nutrient concentration analyses made on water column samples, and flow...
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Search relevance: 58.85 | Views last month: 0
Federal
15: Streamwater load and yield estimates for 12 constituents in 13 watersheds in Gwinnett County, Georgia for water years 2003-2020
- Organization: Department of the Interior
- Updated: 2023-04-04T00:00:00Z
The dataset contains annual and model calibration period streamwater constituent load and yield estimates for 13 watersheds in Gwinnett County, Georgia for the water years 2003 to 2020. Loads and...
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Search relevance: 58.28 | Views last month: 0
Federal
Water and gas chemistry data from wells and hot springs in the Western USA, 1930 – 2006
- Organization: Department of the Interior
- Updated: 2024-03-13T00:00:00Z
Historical water and gas chemistry data from geothermal areas are important for detecting long-term patterns, informing geothermal energy exploration, development, and use, and for contextualizing...
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Search relevance: 42.50 | Views last month: 0
Federal
Data from: Exploring soil ecology gradient concepts: Sensitivity of ecosystem properties to symbiotic fungi in semiarid prairie
- Organization: Department of Agriculture
- Updated: 2025-11-21
Dataset that accompanies a research paper entitled, "Exploring soil ecology gradient concepts: Sensitivity of ecosystem properties to symbiotic fungi in semiarid prairie" to be submitted to a...
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Search relevance: 42.40 | Views last month: 1
Federal
Water and sediment chemistry, and elemental (C/N ratios) and isotopic (delta 13C, delta 15N) data collected aboard R/V Endeavor cruise EN510 in the Gulf of Mexico from 2012-06-27 to 2012-07-04 (NCEI Accession 0205623)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2019-10-22T00:00:00.000+00:00
This dataset contains water and sediment chemistry, and elemental (total C and N, C/N ratio) and isotopic (delta 13C, delta 15N) data collected during R/V Endeavor cruise EN510 in the northern...
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Search relevance: 37.96 | Views last month: 0
Federal
Seagrass canopy height, water depth, chlorophyll-a concentration and other plant and water quality indicators in Coastal Waters of Texas (NCEI Accession 0181898)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2025-03-19T00:00:00.000+00:00
This dataset contains raw tier 2 sampling data starting from 2011 for Texas coastal waters related to seagrasses. Parameters measured include chlorophyll a concentration, water depth, dissolved...
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Search relevance: 37.79 | Views last month: 0
Federal
Inputs and Selected Outputs Used to Assess Spatial and Temporal Patterns in Streamflow, Water-Chemistry, and Aquatic Macroinvertebrates of Selected Streams in Fairfax County, Virginia, 2007-2018
- Organization: Department of the Interior
- Updated: 2020-08-27T00:00:00Z
Nitrogen (N), phosphorus (P), and suspended-sediment (SS) loads, in Fairfax County, Virginia streams have been calculated using monitoring data from five intensively monitored watersheds for the...
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Search relevance: 36.29 | Views last month: 0
Federal
Water and sediment chemistry, and elemental (C/N ratios) and isotopic (delta 13C, delta 15N) data collected aboard R/V Endeavor cruise EN509 in the Gulf of Mexico from 2012-05-26 to 2012-06-19 (NCEI Accession 0205197)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2019-10-21T00:00:00.000+00:00
This dataset contains water and sediment chemistry, and elemental (total C and N, C/N ratio) and isotopic (delta 13C, delta 15N) data collected during R/V Endeavor cruise EN509 in the northern...
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Search relevance: 34.88 | Views last month: 0
Federal
Inputs and Selected Outputs Used to Assess Stormwater Quantity and Quality in Selected Urban Watersheds in Hampton Roads, Virginia, 2016 - 2020
- Organization: Department of the Interior
- Updated: 2022-11-21T00:00:00Z
Nitrogen (N), phosphorus (P), and total suspended solids (TSS) loads, in Hampton Roads, Virginia stormwater conveyance systems have been calculated using monitoring data from 12 intensively...
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Search relevance: 34.45 | Views last month: 0
Federal
Data from: Plant Tissue Characteristics of Miscanthus x giganteus v2
- Organization: Department of Agriculture
- Updated: 2025-11-21
Note: This version supersedes version 1: https://doi.org/10.15482/USDA.ADC/1523127 Changes to data in version 2: Values of latitude and longitude were reversed in version 1 and have been...
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Search relevance: 32.49 | Views last month: 0
Federal
CTD, water, and sediment chemistry data collected aboard R/V Endeavor cruise EN527 in the northern Gulf of Mexico from 2013-06-20 to 2013-07-03 (NCEI Accession 0210558)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2020-05-26T00:00:00.000+00:00
This dataset contains CTD, and water and sediment chemistry data collected aboard R/V Endeavor cruise EN527 in the northern Gulf of Mexico from 2013-06-20 to 2013-07-03. The CTD data were...
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Search relevance: 30.84 | Views last month: 0
Federal
ADCP, CTD, water and sediment chemistry, and underway sensor data collected aboard R/V Endeavor cruise EN505 in the Gulf of Mexico from 2012-04-11 to 2012-04-24 (NCEI Accession 0194300)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2019-09-09T00:00:00.000+00:00
This dataset contains ADCP, CTD, water and sediment chemistry, and other underway sensor data collected aboard R/V Endeavor cruise EN505 in the Gulf of Mexico from 2012-04-11 to 2012-04-24. The...
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Search relevance: 29.89 | Views last month: 0
Federal
CTD, water and sediment chemistry, particle sample elemental (C, N) and isotopic (13C, 15N) data, and time series photographs obtained from a marine snow profiling camera during R/V Endeavor cruise EN515 in the Gulf of Mexico from 2012-09-06 to 2012-09-16 (NCEI Accession 0208348)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2020-01-17T00:00:00.000+00:00
This dataset contains CTD, water and sediment chemistry, particle sample elemental (C,N) and isotopic (13C, 15N) data, and time series photographs obtained from a marine snow profiling camera...
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Search relevance: 29.75 | Views last month: 0
Federal
CTD, and water and sediment chemistry data collected aboard R/V Endeavor cruise EN528 in the northern Gulf of Mexico from 2013-07-07 to 2013-07-23 (NCEI Accession 0217734)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2020-08-31T00:00:00.000+00:00
This dataset contains CTD, and water and sediment chemistry data collected aboard R/V Endeavor cruise EN528 in the northern Gulf of Mexico from 2013-07-07 to 2013-07-03. The CTD data were...
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Search relevance: 29.64 | Views last month: 0
Federal
Water column and sediment geochemical data taken by bottle and bottom samples from research vessel Atlantis (cruise AT41) in the southeastern U.S. Atlantic margin from 2018-08-21 to 2018-08-31 (NCEI Accession 0242498)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2021-11-02T00:00:00.000+00:00
This dataset contains water column and sediment geochemical data taken by bottle and bottom samples from research vessel Atlantis (cruise AT41) in the southeastern U.S. Atlantic margin in August...
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Search relevance: 28.98 | Views last month: 0
Federal
Water column and sediment geochemical data taken by bottle and bottom samples from NOAA Ship Ronald H. Brown in the southeastern U.S. Atlantic margin from 2019-04-10 to 2019-04-29 (NCEI Accession 0242497)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2021-11-01T00:00:00.000+00:00
This dataset contains water column and sediment geochemical data collected taken by bottle and bottom samples from NOAA Ship Ronald H. Brown (cruise RB19-03) in the southeastern U.S. Atlantic...
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Search relevance: 27.52 | Views last month: 0
Federal
Application of the North Carolina Stochastic Empirical Loading and Dilution Model (SELDM) to Assess Potential Impacts of Highway Runoff [front landing page]
- Organization: Department of the Interior
- Updated: 2022-08-28T00:00:00Z
In 2013, the U.S. Geological Survey (USGS) in partnership with the U.S. Federal Highway Administration (FHWA) published a new national stormwater quality model called the Stochastic Empirical...
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Search relevance: 26.00 | Views last month: 0

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