41. Characterization of and temporal changes in groundwater quality of the Upper Black Squirrel Creek Basin, El Paso County, Colorado, 2018-20 Author/Creator: Kisfalusi, Zachary D., author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2022 Format: Book Access & Availability: Loading
42. Characterization of ground-water discharge from bedrock aquifers to the Mississippi and Minnesota Rivers at three areas, Minneapolis-St. Paul area, Minnesota Author/Creator: Schoenberg, Michael, author Publication/Creation: Mounds View, Minnesota : U.S. Geological Survey, 1994 Format: Book Access & Availability: Loading
43. Characterization of groundwater quality and discharge with emphasis on selenium in an irrigated agricultural drainage near Delta, Colorado, 2017-19 Author/Creator: Mast, M. Alisa, author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2021 Format: Book Access & Availability: Loading
44. Characterization of groundwater quality based on regional geologic setting in the Piedmont and Blue Ridge Physiographic provinces, North Carolina Author/Creator: Harden, Stephen L. Publication/Creation: Reston, Va. : U.S. Geological Survey, 2009 Format: Book Access & Availability: Loading
45. Characterization of ground-water quality, Upper Republican Natural Resources District, Nebraska, 1998-2001 Author/Creator: Frankforter, Jill D. Publication/Creation: Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by U.S. Geological Survey, Information Services, 2004 Format: Book Access & Availability: Loading
46. Characterization of preferential ground-water seepage from a chlorinated hydrocarbon-contaminated aquifer to West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 2002-04 Author/Creator: Majcher, Emily H., author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2007 Format: Book Access & Availability: Loading
47. Characterization of subsurface geologic structure for potential water resources near the Villages of Moenkopi, Arizona, 2009-2010 Author/Creator: Macy, J. P. (Jamie P.), author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2012 Format: Book Access & Availability: Loading
48. Characterization of surface-water and groundwater quality on the Fort Berthold Reservation, North Dakota, 2014-17 Author/Creator: Lundgren, Robert F., author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2020 Format: Book Access & Availability: Loading
49. Characterization of the partial oxidation products of crude oil contaminating groundwater at the U.S. Geological Survey Bemidji research site in Minnesota by elemental analysis, radiocarbon dating, nuclear magnetic resonance spectroscopy, and Fourier transform ion cyclotron resonance mass spectrometry Author/Creator: Thorn, Kevin A., author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2022 Format: Book Access & Availability: Loading
50. Characterization of the structure, clean-sand percentage, dissolved-solids concentrations, and estimated quantity of groundwater in the Upper Cretaceous Nacatoch Sand and Tokio Formation, Arkansas Author/Creator: Gillip, Jonathan A., author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2014 Format: Book Access & Availability: Loading