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Data for Radium Mobility and the Age of Groundwater in Public-drinking-water Supplies from the Cambrian-Ordovician Aquifer System, North-Central USA: Table 3. Detailed information on calculations of environmental tracer data. High radium (Ra) concentrations in potable portions of the Cambrian-Ordovician (C-O) aquifer system were investigated using water-quality data and environmental tracers ( 3H, 3Hetrit, SF6 , 14C and 4Herad) of groundwater age from 80 public-supply wells (PSWs). Groundwater ages were estimated by calibration of tracers to lumped parameter models and ranged from modern (1 Myr) in the most downgradient, confined portions of the potable system. More than 80 and 40 percent of mean groundwater ages were older than 1000 and 50,000 yr, respectively. Anoxic, Fe-reducing conditions and increased mineralization develop with time in the aquifer system and mobilize Ra into solution resulting in the frequent occurrence of combined... Categories: Data; Types: Citation; Tags: Cambrian-Ordovician aquifer system, Illinois, Iowa, Michigan, Minnesota, All tags... NAWQA, Wisconsin, alpha recoil, cycle 3, dissolved gas, groundwater age, lumped parameter modeling, nawqa, radium, radium 226 distribution coefficient, recharge temperature, water quality, Fewer tags USGS Topo Map Vector Data (Vector) 76273 Pigeon Point OE E, Minnesota 20190903 for 7.5 x 7.5 minute FileGDB 10.1 Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7.5 x 7.5 minute, Combined Vector, Combined Vector, Combined Vector, All tags... Cook County, Downloadable Data, FileGDB 10.1, FileGDB 10.1, Keweenaw County, MI, MN, Michigan, Minnesota, Public Land Survey System, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags 2. Catalog of natural and induced earthquakes without duplicates The U. S. Geological Survey (USGS) makes long-term seismic hazard forecasts that are used in building codes. The hazard models usually consider only natural seismicity; non-tectonic (man-made) earthquakes are excluded because they are transitory or too small. In the past decade, however, thousands of earthquakes related to underground fluid injection have occurred in the central and eastern U.S. (CEUS), and some have caused damage. In response, the USGS is now also making short-term forecasts that account for the hazard from these induced earthquakes. A uniform earthquake catalog is assembled by combining and winnowing pre-existing source catalogs. Seismicity statistics are analyzed to develop recurrence models,... Types: Citation; Tags: Alabama, Arizona, Arkansas, Colorado, Connecticut, All tags... Delaware, District of Columbia, Earthquake, Florida, Georgia, Hazard, Illinois, Indiana, Induced, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Natural, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, Seismic, South Carolina, South Dakota, Tennessee, Texas, USA, United States, Utah, Vermont, Virginia, West Virginia, Wisconsin, Wyoming, Fewer tags USGS National Boundary Dataset (NBD) in Michigan State or Territory (published 20240215) FileGDB Geospatial data is comprised of government boundaries. Types: Citation; Tags: Alcona, Alger, Allegan, Alpena, Antrim, All tags... Arenac, Baraga, Barry, Bay, Benzie, Berrien, Boundaries, Branch, Calhoun, Cass, Charlevoix, Cheboygan, Chippewa, Clare, Clinton, County or Equivalent, Crawford, Delta, Dickinson, Downloadable Data, Eaton, Emmet, Esri File GeoDatabase 10, FileGDB, Genesee, Gladwin, Gogebic, Grand Traverse, Gratiot, Hillsdale, Houghton, Huron, Incorporated Place, Ingham, Ionia, Iosco, Iron, Isabella, Jackson, Jurisdictional, Kalamazoo, Kalkaska, Kent, Keweenaw, Lake, Lapeer, Leelanau, Lenawee, Livingston, Luce, MI, Mackinac, Macomb, Manistee, Marquette, Mason, Mecosta, Menominee, Michigan, Midland, Minor Civil Division, Missaukee, Monroe, Montcalm, Montmorency, Muskegon, National Boundary Dataset (NBD), National Boundary Dataset (NBD), Native American Area, Newaygo, Oakland, Oceana, Ogemaw, Ontonagon, Osceola, Oscoda, Otsego, Ottawa, PLSS First Division, PLSS Special Survey, PLSS Township, Presque Isle, Public Land Survey System, Reserve, Roscommon, Saginaw, Sanilac, Schoolcraft, Shiawassee, St. Clair, St. Joseph, State, State, State or Territory, Tuscola, U.S. National Grid, US, Unincorporated Place, United States, Van Buren, Washtenaw, Wayne, Wexford, boundaries, boundary, cadastral surveys, geographic names, land ownership, land use maps, legal land descriptions, political and administrative boundaries, zoning maps, Fewer tags USGS Topo Map Vector Data (Vector) 15807 Forestville MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Combined Vector, Combined Vector, Combined Vector, All tags... Downloadable Data, Esri Shapefile nan, Huron, MI, Michigan, Public Land Survey System, Sanilac, Shapefile, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 71620 Sister Lakes MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Berrien, Cass, Combined Vector, All tags... Combined Vector, Combined Vector, Downloadable Data, Esri Shapefile nan, MI, Michigan, Public Land Survey System, Shapefile, Topo Map Vector Data, US, United States, Van Buren, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 8388 Chesaning West MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Combined Vector, Combined Vector, Combined Vector, All tags... Downloadable Data, Esri Shapefile nan, MI, Michigan, Public Land Survey System, Saginaw, Shapefile, Shiawassee, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 47899 Webberville MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Combined Vector, Combined Vector, Combined Vector, All tags... Downloadable Data, Esri Shapefile nan, Ingham, Livingston, MI, Michigan, Public Land Survey System, Shapefile, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 74879 Little Todd Harbor MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Combined Vector, Combined Vector, Combined Vector, All tags... Downloadable Data, Esri Shapefile nan, Keweenaw, MI, Michigan, Public Land Survey System, Shapefile, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 27585 Maple Grove MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Barry, Combined Vector, Combined Vector, All tags... Combined Vector, Downloadable Data, Esri Shapefile nan, MI, Michigan, Public Land Survey System, Shapefile, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 43133 Sterling NW MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Arenac, Combined Vector, Combined Vector, All tags... Combined Vector, Downloadable Data, Esri Shapefile nan, Gladwin, MI, Michigan, Ogemaw, Public Land Survey System, Shapefile, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 69363 Birmingham MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Combined Vector, Combined Vector, Combined Vector, All tags... Downloadable Data, Esri Shapefile nan, MI, Michigan, Oakland, Public Land Survey System, Shapefile, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 29132 Middleville MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Barry, Combined Vector, Combined Vector, All tags... Combined Vector, Downloadable Data, Esri Shapefile nan, MI, Michigan, Public Land Survey System, Shapefile, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 76086 Manitou Island OE E MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Combined Vector, Combined Vector, Combined Vector, All tags... Downloadable Data, Esri Shapefile nan, Keweenaw, MI, Michigan, Public Land Survey System, Shapefile, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 25471 Leonidas MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Branch, Calhoun, Combined Vector, All tags... Combined Vector, Combined Vector, Downloadable Data, Esri Shapefile nan, Kalamazoo, MI, Michigan, Public Land Survey System, Shapefile, St. Joseph, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 20255 Hetherton MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Combined Vector, Combined Vector, Combined Vector, All tags... Downloadable Data, Esri Shapefile nan, MI, Michigan, Montmorency, Otsego, Public Land Survey System, Shapefile, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 76310 Grosse Pointe OE E MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Combined Vector, Combined Vector, Combined Vector, All tags... Downloadable Data, Esri Shapefile nan, MI, Macomb, Michigan, Public Land Survey System, Shapefile, Topo Map Vector Data, US, United States, Wayne, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 49172 Williamsburg MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Antrim, Combined Vector, Combined Vector, All tags... Combined Vector, Downloadable Data, Esri Shapefile nan, Grand Traverse, MI, Michigan, Public Land Survey System, Shapefile, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 14838 Fairgrove MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Combined Vector, Combined Vector, Combined Vector, All tags... Downloadable Data, Esri Shapefile nan, MI, Michigan, Public Land Survey System, Shapefile, Topo Map Vector Data, Tuscola, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags USGS Topo Map Vector Data (Vector) 72561 Traverse City SW MI (published 20231223) Shapefile Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features. Types: Citation; Tags: 7.5 x 7.5 minute, 7_5_Min, Combined Vector, Combined Vector, Combined Vector, All tags... Downloadable Data, Esri Shapefile nan, Grand Traverse, Leelanau, MI, Michigan, Public Land Survey System, Shapefile, Topo Map Vector Data, US, United States, boundary, contours, geographic names, hydrography, structures, transportation, woodland, Fewer tags 1 2 3 4 5 ... »