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United States Environmental Protection Agency
Upstate New York Surficial Aquifer Mapping Program
In 2006, the New York State Department of Environmental Conservation (NYSDEC) and the U.S. Geological Survey (USGS) cooperatively funded a Brownfield and Groundwater GIS Program as required by the 2003 legislation that established a Brownfield Cleanup Program (NYS Assembly Bill 9120). The NYSDEC developed an implementation plan for the Brownfield and Groundwater GIS Program, and one action identified in that plan was the development of spatial datasets of the aquifer maps published by the U.S. Geological Survey Detailed Aquifer Mapping Program. The USGS has mapped over 30 sand and gravel aquifers in upstate New York at the 1:24,000-scale since the 1980's. The following enhancements were made in the creation of the georeferenced map layers: 1) The surficial-geology mapping units were standardized to NYS Geological Survey nomenclature, 2) The aquifer boundaries were redrawn to include adjacent areas of permeable material hydraulically connected to the primary or principal aquifer, and 3) Adjacent maps were edgematched, preserving the original geologic interpretations from over 25 authors. An effort was made to standardize codes of adjacent and overlapping map units. However, in some cases inconsistencies in standard codes exist across edge-matched areas in order to preserve the author's original geologic interpretation. To further increase applicability, the map layers contain original mapping units and aquifer boundaries as well as the new standardized mapping units and updated aquifer boundaries. The original published aquifer maps contain additional base and geologic information not included in these map layers. The published aquifer maps are available for download in their entirety from the USGS Publications Warehouse (
). EPA Region 2 downloaded this layer from the NY Water Science Center page at the USGS web site (
)We applied the following selection statement to the GIS layer to isolate only Primary Aquifer polygons form the source polygon layer (Surficial_Geology.NY_Aquifer_Mapping.mdb): "Surficial Geology"= 'YES'. Region 2 also joined the "Standard_Geologic_Mapping_Units" table on "Standard_Code" to the output layer in order to include the field â€œStandard Description".
These data are intended for use in publications, at a scale of 1:24,000 or smaller. The primary intended use is for local and regional display and analysis. It is not intended for site-specific studies.
Time Period of Content
February 8, 2008
February 8, 2008
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Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made by the U.S. Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty.
None. Acknowledgment of the United States Geological Survey (U.S.G.S.) would be appreciated in products derived from these data.
Administrative and Political Boundaries, Environment and Conservation, Geoscientific information
U.S. Geological Survey, New York Water Science Center
Metadata Reference Information
Metadata Date Stamp:
February 8,, 2008
Metadata Standard Name:
FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: