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Filters Date Range Past year (2) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions NetCDF OPeNDAP Service (1) Shapefile (1) Types Map Service (2) OGC WFS Layer (2) OGC WMS Layer (2) OGC WMS Service (2) Downloadable (1) NetCDF OPeNDAP Service (1) Shapefile (1) Contacts Upper Midwest Water Science Center Paul F Juckem U.S. Geological Survey U.S. Geological Survey - ScienceBase Laura A Schachter More... Tag Types Theme (2) Harvest Set (2) Place (2) Tag Schemes None (2) ISO 19115 Topic Category (2) View Results as: JSON ATOM CSV

Calculated Leached Nitrogen from Septic Systems in Wisconsin, 1850-2010 This data release contains a netCDF file containing decadal estimates of nitrate leached from septic systems (kilograms per hectare per year, or kg/ha) in the state of Wisconsin from 1850 to 2010, as well as the python code and supporting files used to create the netCDF file. The netCDF file is used as an input to a Nitrate Decision Support Tool for the State of Wisconsin (GW-NDST; Juckem and others, 2024). The dataset was constructed starting with 1990 census records, which included responses about households using septic systems for waste disposal. The fraction of population using septic systems in 1990 was aggregated at the county scale and applied backward in time for each decade from 1850 to 1980. For decades... Categories: Data; Types: Downloadable, Map Service, NetCDF OPeNDAP Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Leaching, Nitrate, Nitrogen, Septic, USGS Science Data Catalog (SDC), All tags... Wisconsin, biota, Fewer tags Compiled age tracer and redox chemistry data for the State of Wisconsin, 1987-2009 This data set was compiled to support the development of a model of oxygen reduction rates in Wisconsin groundwater wells; a model which is part of a Groundwater Nitrate Decision Support Tool for Wisconsin. Data were compiled from previously published studies with data collection from 1987 to 2009. Only data describing redox condition, groundwater age, depth to water, and well construction were compiled, though a majority of these studies presented a broader suite of analytes. Parameters compiled include dissolved oxygen, nitrate, indicators of denitrification, and parameters used in estimating groundwater age including tritium and chlorofluorocarbon (CFC) concentration. Age estimates based on these data, where... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: USGS Science Data Catalog (SDC), Wisconsin, age tracer, biota, groundwater, All tags... redox, Fewer tags