Well inventory (external version). Includes wells from the Drinking Water System (DWS), Water Use, Well Construction, GEMS and SWAMP. In this external version, municipal and other-than-municipal (OTM) are displayed as a section centroid, due to Homeland Security requirements. This table is rebuilt on a weekly basis.

Feature layer displaying sample results from Wisconsin DNR’s Private Well PFAS Study Sample results from Wisconsin DNR’s Private Well PFAS Study: “Prevalence and Source Tracing of PFAS in Shallow Groundwater Used for Drinking Water in Wisconsin”, Environmental Science & Technology. Per- and polyfluoroalkyl substances (PFAS) and other water quality parameter results from samples collected from 450 homes with shallow private wells throughout Wisconsin. The samples were analyzed for 44 PFAS, major ions, metals, total organic carbon, and indicators of human waste as well as agricultural influence. More information about the study can be found at https://dnr.wisconsin.gov/topic/Groundwater/PFASStudy.html. This dataset is associated with the following publication: Silver, M., W. Phelps, K. Masarik, K. Burke, C. Zhang, A. Schwartz, M. Wang, A.L. Nitka, J. Schutz, T. Trainor, J. Washington, and B. Rheineck. Prevalence and Source Tracing of PFAS in Shallow Groundwater Used for Drinking Water in Wisconsin, USA. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, USA, 57(45): 17415–17426, (2023).

This dataset includes over 49,000 well records from the state well drillers databases in Minnesota, Wisconsin, and Michigan. Each state well has at a minimum the well depth and a static water level. Static water levels were mostly determined when the well was constructed. Data included in this shapefile include the well construction date, well depth, well elevation (if determined), type of well, the methods used for determining the well location and elevation (if determined), casing and screen depths (where reported), the static water level and a date, and the year the well was constructed. The field names from each of the state databases were harmonized to merge the data, and a table of the original field names is included. Tabular files are included with codes describing the original field names mapped to the combined field names, and descriptions of codes used to describe the well location method, well depth method, and well type for each state. The USGS wells in this dataset were pulled from the National Water Information System (NWIS) and have at least one water level measurement. Additional data for the NWIS wells can be retrieved from the USGS National Water Dashboard https://dashboard.waterdata.usgs.gov/app/nwd/en/?region=lower48&aoi=default.

This dataset contains the daily groundwater level observations and other monitoring well attributes in Wisconsin. It covers 964 groundwater level monitoring wells and has 400,812 observations. The time span of this dataset is between February 2nd, 1929 and December 31st, 2015. The data sources include United States Geological Survey (USGS), Wisconsin Department of Natural Resources (WDNR), University of Wisconsin Extension, counties in Central Sands area, and North Temperate Lakes - Long-Term Ecological Research (NTL-LTER). The data compilation consists of three major steps. First, the data were retrieved from different data sources. Then the data from different sources were pooled together. No well was monitored by more than one entity so none of the wells’ records were merged. Third, two rounds of quality assurance and quality control (QAQC) were conducted. Wells in confined aquifers were not included in this dataset. The values of the USGS and Central Sands data are the depth to the water whereas LTER values are mean sea level elevations of the groundwater levels. These data could not be directly compared with each other. This data compilation was funded by the Wisconsin Groundwater Joint Solicitation.

Well inventory (external version) used by the Groundwater Retrieval Network application. Includes wells from the Drinking Water System (DWS), Water Use, Well Construction, GEMS and SWAMP. In this external version, municipal and other-than-municipal (OTM) are displayed as a section centroid, due to Homeland Security requirements. Data is refreshed twice a year (January and June).

This dataset contains the daily groundwater level observations and other monitoring well attributes in Wisconsin. It covers 964 groundwater level monitoring wells and has 400,812 observations. The time span of this dataset is between February 2nd, 1929 and December 31st, 2015. The data sources include United States Geological Survey (USGS), Wisconsin Department of Natural Resources (WDNR) / University of Wisconsin Extension / Counties in Central Sands area, and North Temperate Lakes - Long-Term Ecological Research (NTL-LTER). The data compilation consists of three major steps. First, the data were retrieved from different data sources. Then the data from different sources were pooled together. No well was monitored by more than one entities so none of the wells’ records were merged. Third, two rounds of quality assurance and quality control (QAQC) were conducted. All the wells in the confined aquifers are not in this dataset. The values of the USGS and Central Sands data are the depth to the water while LTER values are the actually mean sea levels of the groundwater levels. These data could not be directly compared with each other. The project that complies the data is funded by Wisconsin Groundwater Joint Solicitation

This layer consists of a polygon shapefile at 1:250,000 scale containing depth-to-water table estimates used in preparing the GCSM for Wisconsin. The depth to water table is the distance from the land surface to the water table. The distance water must flow to reach the groundwater, combined with the ease with which movement occurs, play a significant role indetermining the susceptibility of an area to contamination. See the usage documentation (https://www.arcgis.com/home/item.html?id=e1e89ae505594459a46407f1daf4ad5d) and the Full report (https://www.arcgis.com/home/item.html?id=fd4d0c43abc04b4ab915586d9a0e89dd) for more information.

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We deployed a sampler to characterize water quality from a household well tapping a shallow fractured dolomite aquifer in northeast Wisconsin. The sampler was deployed from January to May 2017, and monitored temperature, nitrate, chloride, specific conductance, and fluorescent dissolved organic matter on a minute time step; water was directed to sequential microbial filters during three recharge periods that ranged from 5 to 20 days. Results from the automated sampler demonstrate the dynamic nature of the household water quality, especially with regard to microbial targets, which were shown to vary 1 to 2 orders of magnitude during a single sampling event. We believe assessments of pathogen occurrence and concentration, and related assessments of drinking well vulnerability, would be improved by the time-integrated characterization provided by this sampler. This data release provides the data collected during this study and use for analyses described by Owens et al., 2018.

Financial overview and grant giving statistics of Wisconsin Water Well Association Inc

This layer is intended for use in the Wisconsin PFAS Interactive Data Viewer GIS mapping application, use for any other purpose should be done with caution to avoid misuse or misinterpretation of information contained in this layer. Please seek appropriate DNR staff support.PFAS results in Wisconsin DNR's Drinking Water System (DWS) Portal are presented on this layer. The results have been generalized by water system and are classified based on the levels of PFAS detected. Point locations are generalized to PLSS centroids and do not represent well or specific water supply system feature locations.Municipal Water System SamplingResults from municipal or public water supply systems that have sampled drinking water for PFAS. Sampling completed prior to 2022 may not be included on this map. More details about sampling results are on the Drinking Water System Portal.Map locations are shown at the Public Land Survey System section center point for each municipal water system rather than the exact location of the well.PFAS health advisory levels (HALs) and the hazard index (HI) approach are defined by the Wisconsin Department of Health Services (DHS).For more information contact the DNR Drinking and Groundwater Program.

38 groundwater wells' water level data in Central Sands area, Wisconsin. The Central Sands is an area of the state with a high density of high-capacity wells for irrigation. The Wisconsin Department of Natural Resources (WDNR), UW Extension, and the counties began monitoring shallow groundwater wells near lakes in 2013. The five counties include: Portage, Waupaca, Adams, Waushara, and Marquette. Volunteers were enlisted to monitor lake levels on 38 lakes in the region. Instead of using staff gauges, the team opted to install shallow groundwater wells near the lake shore. This eliminated the need to reinstall and survey staff gauges each season. It was assumed that shallow groundwater wells would be a good approximation of lake levels because the soils are made up of porous, sand material. On a subset of lakes, WDNR collected water level data from the shallow groundwater wells and from staff gauges at the same time. One season of monitoring showed that changes in water levels over time are similar, but the actual elevation of water in the well might be different than the surface of the lake. This data set can be downloaded from WDNR's SWIMS database: https://dnr.wi.gov/topic/surfacewater/swims/

This data release contains groundwater-quality data and well information for the glacial aquifer system in the northern USA. Water-quality data and well information were derived from a dataset compiled from three sources: The U.S. Geological Survey (USGS) National Water Information System (NWIS; USGS, 1998, 2002), the U.S. Environmental Protection Agency (USEPA) Safe Drinking Water Information System (SDWIS; USEPA, 2013), and numerous agencies and organizations at the state, regional, and local level. The data compilation of the National Water Quality Program’s groundwater assessment team is an internal dataset informally referred to as the National Groundwater Aggregation (NGA). The current study of groundwater quality in the glaciated U.S. (Erickson and others, 2019) considers only parameters with benchmarks from wells in the national groundwater aggregation—data from springs were not used. Data were screened for sample dates of 2005 or later, and the most recent sample at each ...

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This dataset describes groundwater quality monitoring wells in the vicinity of the Badger Army Ammunition Plant in Sauk County, Wisconsin, and information associated with each unique well. This includes the values used for mapping plume boundaries, concentration trends for contaminants in each individual well, and monitoring optimization results from the Monitoring and Redediation Optimization System (MAROS) analysis.

Information and recommendations concerning groundwater and water supply wells in two agricultural regions in Bayfield County, Wisconsin. Includes a report, a water-table map, a set of four cross sections, and GIS data. (Replaces WOFR2015-02.)

The Groundwater Usage for Public Supply dataset contains attributes pertaining to groundwater use in the glaciated conterminous United States summarized by county. The attributes were computed from total groundwater usage by county compiled by Maupin and others (2010), and from inventories of water-use records for 71,267 public water-supply systems by Buchwald and others (in press). Source aquifers (Quaternary sediments or bedrock) were assigned for the public water-supply systems based on reported data (e.g., well construction records, aquifer delineation maps), or based on well depth and the Quaternary sediment thickness. Water usage rates are reported on an average annual, areal basis in units of millimeters per year, to facilitate comparison with estimated recharge rates from Westenbroek and others (in press).

This data release contains files for three scenarios of an analytic element (GFLOW) groundwater flow model with particle-tracking that were developed in cooperation with the Lac du Flambeau Band of Lake Superior Chippewa and Indian Health Service to map the probablistic plume extent for a proposed waste-water infiltration lagoon, along with maps to delineate the area contributing recharge to supply wells under 2010 and 2035 pumping conditions. Monte Carlo methods were used to run each scenario thousands of times using a range of parameters developed through prior work (https://doi.org/10.3133/sir20145020). Results illustrate that most of the infiltrated waste water would be expected to flow south, ultimately discharging to Moss and Fence Lakes. Probabalistic areas contributing recharge to the supply wells did not overlap with the new lagoon sites under 2010 pumping conditions, while the area contributing recharge under 2035 pumping conditions shows a low probability of o ...

Water Well Locations dataset current as of 2007. Privately-Owned Water Wells within City of Ashland, WI.