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This dataset provides a subset of well construction information provided by the driller's well logs. Complete well logs can be accessed on the Minnesota Well Index online (http://www.health.state.mn.us/ divs/eh/cwi/).
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This dataset provides aqueous nitrate+nitrite, aqueous manganese, aqueous iron, and total sulfate measurements in groundwater samples from 254 newly constructed private residential wells between 2014 and 2016. The study focuses on three geologically distinct regions of Minnesota: central, northwest, and northeast. These study regions were chosen due to their prevalent elevated As concentrations in drinking water. Each of the 254 wells were sampled in three rounds by the Minnesota Department of Health (MDH). The timing of the three sampling rounds was (1) immediately or shortly after well construction (round 1); (2) 3-6 months after initial sample collection (round 2); and (3) 12 months after initial sample collection...
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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This data release provides total and aqueous arsenic (As) determinations and associated field readings collected from groundwater sampled from 254 newly constructed private residential wells between 2014 and 2016. The study focuses on three regions of Minnesota that differ geologically: south-central (herein called central), northwest, and northeast. These study regions were chosen due to their prevalent elevated As concentrations in drinking water. Each of the 254 wells were sampled in three rounds by the Minnesota Department of Health (MDH). The timing of the three sampling rounds was (1) immediately or shortly after well construction (round 1); (2) 3-6 months after initial sample collection (round 2); and (3)...
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This data release contains: (1) ASCII grids of predicted probability of elevated arsenic in groundwater for the Northwest and Central Minnesota regions, (2) input arsenic and predictive variable data used in model development and calculation of predictions, and (3) ASCII files used to predict the probability of elevated arsenic across the two study regions. The probability of elevated arsenic was predicted using Boosted Regression Tree (BRT) modeling methods using the gbm package in R Studio version 3.4.2. The response variable was the presence or absence of arsenic >10 µg/L, the U.S. Environmental Protection Agency’s maximum contaminant level for arsenic, in 3,283 wells located throughout both study regions (1,363...
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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These vector contour lines are derived from the 3D Elevation Program using automated and semi-automated processes. They were created to support 1:24,000-scale CONUS and Hawaii, 1:25,000-scale Alaska, and 1:20,000-scale Puerto Rico / US Virgin Island topographic map products, but are also published in this GIS vector format. Contour intervals are assigned by 7.5-minute quadrangle, so this vector dataset is not visually seamless across quadrangle boundaries. The vector lines have elevation attributes (in feet above mean sea level on NAVD88), but this dataset does not carry line symbols or annotation.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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These vector contour lines are derived from the 3D Elevation Program using automated and semi-automated processes. They were created to support 1:24,000-scale CONUS and Hawaii, 1:25,000-scale Alaska, and 1:20,000-scale Puerto Rico / US Virgin Island topographic map products, but are also published in this GIS vector format. Contour intervals are assigned by 7.5-minute quadrangle, so this vector dataset is not visually seamless across quadrangle boundaries. The vector lines have elevation attributes (in feet above mean sea level on NAVD88), but this dataset does not carry line symbols or annotation.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.


map background search result map search result map Groundwater arsenic data and ASCII grids for predicting elevated arsenic in northwestern and central Minnesota using boosted regression tree methods USGS Topo Map Vector Data (Vector) 47738 Waubun, Minnesota 20220506 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 2902 Beaulieu, Minnesota 20220507 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 13562 Ebro, Minnesota 20220507 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 14901 Faith NE, Minnesota 20220502 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 32962 Ogema NE, Minnesota 20220506 for 7.5 x 7.5 minute FileGDB 10.1 Selected well construction information Arsenic and field parameter data USGS NED 1/3 arc-second Contours for Bemidji W, Minnesota 20220429 1 X 1 degree FileGDB 10.1 USGS NED 1/3 arc-second Contours for Grand Forks E, North Dakota 20200826 1 X 1 degree FileGDB 10.1 Aqueous nitrate+nitrite, aqueous manganese, aqueous iron, and total sulfate data USGS US Topo 7.5-minute map for Ebro, MN 2019 USGS US Topo 7.5-minute map for Faith NE, MN 2019 USGS US Topo 7.5-minute map for Mahnomen, MN 2019 USGS US Topo 7.5-minute map for Tulaby Lake, MN 2019 US Topo 7.5-minute map for Faith NE, MN US Topo 7.5-minute map for Ebro, MN US Topo 7.5-minute map for Fosston SE, MN US Topo 7.5-minute map for Ogema NE, MN US Topo 7.5-minute map for Roy Lake, MN USGS Topo Map Vector Data (Vector) 47738 Waubun, Minnesota 20220506 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 2902 Beaulieu, Minnesota 20220507 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 13562 Ebro, Minnesota 20220507 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 14901 Faith NE, Minnesota 20220502 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 32962 Ogema NE, Minnesota 20220506 for 7.5 x 7.5 minute FileGDB 10.1 USGS US Topo 7.5-minute map for Ebro, MN 2019 USGS US Topo 7.5-minute map for Faith NE, MN 2019 USGS US Topo 7.5-minute map for Mahnomen, MN 2019 USGS US Topo 7.5-minute map for Tulaby Lake, MN 2019 US Topo 7.5-minute map for Faith NE, MN US Topo 7.5-minute map for Ebro, MN US Topo 7.5-minute map for Fosston SE, MN US Topo 7.5-minute map for Ogema NE, MN US Topo 7.5-minute map for Roy Lake, MN USGS NED 1/3 arc-second Contours for Bemidji W, Minnesota 20220429 1 X 1 degree FileGDB 10.1 USGS NED 1/3 arc-second Contours for Grand Forks E, North Dakota 20200826 1 X 1 degree FileGDB 10.1 Groundwater arsenic data and ASCII grids for predicting elevated arsenic in northwestern and central Minnesota using boosted regression tree methods Selected well construction information Arsenic and field parameter data Aqueous nitrate+nitrite, aqueous manganese, aqueous iron, and total sulfate data