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Indiana Geological Survey ArcMap Services
From the site: "Desktop GIS software users may access IGS Web map services (WMS) online without downloading GIS data sets to their local systems. This is particularly useful for... -
Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous...
From the site: "This tabular data set represents the mean annual natural groundwater recharge, in millimeters, compiled for every MRB_E2RF1catchment of selected Major River... -
Horizon Systems' NHD Plus
From the site: "NHDPlus is a geo-spatial, hydrologic framework dataset envisioned by the US Environmental Protection Agency. The EPA Office of Water, assisted by the US... -
USGS Water Resources: Physiographic Provinces, Aquifer Outcrops and Recharge ...
From the site: "This dataset is a coverage of the physiographic provinces, aquifer outcrops and recharge rates for Tennessee. Each polygon is attributed with its associated... -
GAGES-II: Geospatial Attributes of Gages for Evaluating Streamflow
From the site: "This dataset has two purposes: to provide users with a comprehensive set of geospatial characteristics for a large number of gaged watersheds, particularly for... -
ISGS - Illinois Coal Resource Shapefiles
From the site: "[L]inks to the digital coal resource shapefiles available from the ISGS Coal Section. The listed shapefiles are the same ones that were used to construct the... -
USGS Water Resources: Principal Aquifers of the 48 Conterminous United States...
From the site: "This map layer contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as... -
AAPG Database: GIS Open Files
From the site: "The AAPG, under the direction and guidance of the GIS Publications Committee and AAPG Datapages, is building a GIS / spatial library comprised of peer-reviewed... -
Average annual runoff in the United States, 1951-80
Downloadable data depicting the average annual runoff in the United States from 1951 to 1980; could help to understand and/or predict current and future effects and patterns. -
Spatial Data resources EDX Group
This group offers a collection of key spatial data resources housed or linked wtihin EDX