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Geodatabase of the datasets used to represent the four aquifer subunits of th...
This geodatabase includes spatial datasets that represent the Cambrian-Ordovician aquifer system in the States of Wisconsin, Michigan, Minnesota, Iowa, and Illinois. Included... -
Data used to evaluate drinking water quality in the glacial aquifer system, n...
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... -
Groundwater data, predictor variables, and rasters used for predicting the pr...
This data release contains input data used in model development and TIF raster files used to predict the probability of high arsenic (As) and high manganese (Mn) in groundwater... -
Geodatabase of the datasets used to represent the four subunits of the Southe...
This geodatabase includes spatial datasets that represent the Southeastern Coastal Plain aquifer system in the States of Alabama, Georgia, Mississippi, South Carolina, and... -
Geodatabase of the datasets used to represent the four aquifer subunits of th...
This geodatabase includes spatial datasets that represent the Cambrian-Ordovician aquifer system in the States of Wisconsin, Michigan, Minnesota, Iowa, and Illinois. Included... -
Geodatabase of the available top and bottom surface datasets that represent t...
This geodatabase includes spatial datasets that represent the Mississippian aquifer in the States of Alabama, Illinois, Indiana, Iowa, Kentucky, Maryland, Missouri, Ohio,... -
Groundwater data, predictor variables, and rasters used for predicting the pr...
This data release contains input data used in model development and TIF raster files used to predict the probability of high arsenic (As) and high manganese (Mn) in groundwater... -
Chicot Aquifer System Extent of southwestern Louisiana, October 2020
The Chicot aquifer system underlies an area of approximately 9,500 mi2 in southwestern Louisiana and is located within the Gulf Coastal Plain physiographic province. The region... -
Geodatabase of the datasets used to represent the High Plains aquifer, Colora...
This geodatabase includes spatial datasets that represent the High Plains aquifer in the States of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and... -
Geodatabase of the datasets used to represent the four subunits of the Southe...
This geodatabase includes spatial datasets that represent the Southeastern Coastal Plain aquifer system in the States of Alabama, Georgia, Mississippi, South Carolina, and... -
Geodatabase of the datasets that represent the three subareas of the Silurian...
This geodatabase includes spatial datasets that represent the Silurian-Devonian aquifers in the States of Illinois, Indiana, Iowa, Kentucky, Michigan, Missouri, Ohio, Tennessee,... -
Generalized boundaries of the National Water-Quality Assessment (NAWQA) Study...
This is a GENERALIZED version of the boundaries and codes used for the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program Study-Unit investigations in... -
SIR2012-5282 Surficial Geology: Hydrogeology of the Susquehanna River valley-...
The hydrogeology of the valley-fill aquifer system along a 32-mile reach of the Susquehanna River valley and adjacent areas was evaluated in eastern Broome and southeastern... -
National Water-Quality Assessment (NAWQA) Study-Unit Investigations in the co...
This is a coverage of the boundaries and codes used for the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program Study-Unit investigations in the... -
Geodatabase of the datasets used to represent the 4 subareas of the Lower Cre...
This geodatabase includes spatial datasets which represent the Lower Cretaceous aquifer system in the States of Iowa, Kansas, Minnesota, Montana, Nebraska, North Dakota, South... -
Data used to evaluate drinking water quality in the glacial aquifer system, n...
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... -
Geodatabase of the available top and bottom surface datasets that represent t...
This geodatabase includes spatial datasets that represent the Basin and Range basin-fill aquifers in the States of Arizona, California, Idaho, Nevada, New Mexico, Oregon, and... -
Geodatabase of the datasets used to represent the two subunits of the Central...
This geodatabase includes spatial datasets that represent the Central Valley aquifer system in the State of California. Included are: (1) polygon extents; datasets that... -
Geodatabase of the datasets used to represent the two subunits of the Central...
This geodatabase includes spatial datasets that represent the Central Valley aquifer system in the State of California. Included are: (1) polygon extents; datasets that... -
Groundwater data, predictor variables, and rasters used for predicting redox ...
This data release contains input data used in model development and TIF raster files used to predict the probability of low dissolved oxygen (DO) and high dissolved iron (Fe) in...