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Federal
1987-2018 cyanobacteria and water quality data for 20 reservoirs 61 recent views
U.S. Environmental Protection Agency —
These data include cyanobacteria cell densities (including maximum cell densities observed for each year in each reservoir), annual summer (June-August)... -
Federal
Coupling the dual-isotope indicators of water and nitrate indicates legacy groundwater pollution
U.S. Environmental Protection Agency —
Shallow groundwater samples were collected since 2006 for routine analysis by ODEQ from 16 domestic wells (installation dating from the 1970s) and 23 ODEQ groundwater... -
Federal
River basin simulations reveal wide-ranging wetland-mediated nitrate load reductions
U.S. Environmental Protection Agency —
Supporting information for "River basin simulations reveal wide-ranging wetland-mediated nitrate load reductions". Supporting information includes the calibrated... -
Federal
Deep soil nitrogen storage slows nitrate leaching through the vadose zone [dataset]
U.S. Environmental Protection Agency —
This field study was designed to evaluate how nitrate leaching rates change with depth and how seasonal and annual variation in management (e.g., fertilizer input... -
Federal
Considerations when using nutrient inventories to prioritize water quality restoration/improvement efforts across the US
U.S. Environmental Protection Agency —
The corresponding database integrates multiple streams of information to provide estimates of fluxes and surpluses across urban and agricultural domains as well as... -
Federal
Raw data used in study
U.S. Environmental Protection Agency —
This file contains land cover and water chemistry data. This dataset is associated with the following publication: Smucker, N.J., A. Kuhn , M.A. Charpentier, C.J.... -
Federal
Calapooia_NInventory_2008
U.S. Environmental Protection Agency —
The dataset contains calculated results of annual and seasonal input of nitrogen from seven major sources in the Calapooia River Watershed and its subwatersheds. It... -
Federal
The Chesapeake Bay Program Modelling System: Overview and Recommendations for Future Development
U.S. Environmental Protection Agency —
This manuscript is an overview of the Chesapeake Bay Modeling system and uses public datasets from Phase 6 of the Chesapeake Bay model... -
Federal
National Aquatic Resource Survey Rivers and Streams Data
U.S. Environmental Protection Agency —
Data are from 1,000 river and stream sites across the conterminous US where consistent biological, chemical, physical and watershed data were gathered. The sites were... -
Federal
LMR watershed temporal DNA metabarcoding 2016 study
U.S. Environmental Protection Agency —
LMR watershed temporal DNA metabarcoding 2016 study. This dataset is associated with the following publication: Smucker, N., E. Pilgrim, H. Wu, C. Nietch, J. Darling,... -
Federal
National Inventory of Reactive Nitrogen
U.S. Environmental Protection Agency —
The effectiveness of management actions in reducing the release of excess nitrogen (N) to the environment is best assessed if N fluxes across air, land and water are... -
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
Chesapeake Bay Nitrogen Trend Predictor Dataset
U.S. Environmental Protection Agency —
Please review Zhang et al. (2021) for details on study design and datasets (https://doi.org/10.1016/j.watres.2022.118443). In summary, predictor and response variable... -
Federal
From field to groundwater: Quantifying crop N budgets, performance metrics and nitrate leaching in the southern Willamette Valley, Oregon
U.S. Environmental Protection Agency —
This file contains water balances, monthly nitrate leaching and concentrations, field site descriptions and field crop inputs and harvest information. -
Federal
St. Louis River water quality assessment 2012, 2013
U.S. Environmental Protection Agency —
St. Louis River Area of Concern surface water nutrient (TP, TN, NOx-N, NH4-N), dissolved oxygen, and particulate (TSS, chlorophyll a) concentration data from 2012 and...