The retrospective database is a compilation of historical water-quality and
ancillary data collected before NAWQA Study Units initiated sampling in 1993.
This coverage contains the point locations ...
This is a point coverage of the sampling sites for the U.S. Geological Survey
National Water-Quality Assessment (NAWQA) Program Study-Unit investigations of
Trace Elements for the conterminous United ...
This is a coverage of the boundaries and codes used for the U.S. Geological
Survey National Water-Quality Assessment (NAWQA) Program Study-Unit
investigations for the conterminous United States, excluding ...
This data was created specifically for use in the Wyoming
Ground-water Vulnerability Mapping project. The data represents
only depth to INITIAL ground-water and does not reflect potential ...
The Brazilian receiving station for Landsat data is located in Cuiaba,
state of Mato Grosso, Midwest region: 56 degrees 5 minutes 30 seconds
West longitude, and 15 degrees ...
This is a point coverage of the sampling sites for the U.S. Geological Survey
National Water-Quality Assessment (NAWQA) Program Study-Unit investigations of
Surface Water Nutrients for the conterminous ...
The Upper Floridan aquifer is part of the Floridan aquifer system that
underlies most of the Coastal Plain of Georgia, southern South Carolina,
extreme southeastern Alabama, and all of Florida (Miller, ...
This data set was created as part of the Black Hills Hydrology Study (BHHS).
The BHHS is a long-term investigation that was initiated in 1990 as a
cooperative effort between the U.S. Geological Survey ...
