New York State Aquifers

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
NYS Department of Health, Bureau of Public Water Supply Protection
Publication_Date: 200104, metadata revised 201107
Title: New York State Aquifers
Edition: 3.0
Geospatial_Data_Presentation_Form: vector coverage
Publication_Information:
Publication_Place: Troy, NY
Publisher:
NYS Department of Health, Center for Environmental Health, Bureau of Public Water Supply Protection
Online_Linkage: <http://www.nysgis.state.ny.us/gis9/nyaquifers.zip>
Description:
Abstract:
This dataset is intended for archival purposes only and represents an incomplete version of New York State Aquifers. No further updates will be issued. It is recommended users refer to DEC's Unconsolidated Aquifers at 1:250,000 for more current and complete coverage. The data set consists of aquifer polygons or regions depicting unconsolidated aquifers in New York State, excluding Long Island. Aquifers are separated by and include attributes for potential yield ranges and confinement indicator. Edition 2.0 of this data includes 38 aquifer polygons missing from edition 1.0 (additional polygons are included in a separate file report: <Missing_Aquifers.dbf>
Purpose:
To present improved resolution aquifer data with aquifer spatial extents matched to yield ranges. NOTE: Since 2008, DEC's Unconsolidated Aquifers at 1:250,000 replaces this coverage as a completed Aquifer dataset for New York State.
Supplemental_Information:
Aquifer boundaries and yield ranges are derived from paper maps (5 WRIs: 87-4122, 87-4274, 87-4275, 87-4276, and 88-4076) produced for the low level radioactivity siting board (4/89). Original vector linework representing composited aquifer limits were available from the LLRW which was digitized over USGS Topographic Maps at a scale of 1:250,000. This data set captures the remaining information contained in the original paper maps.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 200103
Ending_Date: 200104
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None anticipated
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -79.75
East_Bounding_Coordinate: -73.26
North_Bounding_Coordinate: 44.97
South_Bounding_Coordinate: 40.89
Keywords:
Theme:
Theme_Keyword_Thesaurus: NYS GIS Clearinghouse categories
Theme_Keyword: Environment
Theme:
Theme_Keyword_Thesaurus: NYS GIS Clearinghouse categories
Theme_Keyword: Geology
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: New York
Access_Constraints: None
Use_Constraints:
No use constraints. Users should credit original LLRW source data along with this data.
Browse_Graphic:
Browse_Graphic_File_Name: <aquiferbrowsegraphic.htm>
Browse_Graphic_File_Description:
Aquifer data for Chemung County, New York (colorized by yield value)
Browse_Graphic_File_Type: JPEG
Native_Data_Set_Environment:
The data set was created in the Windows 98 operating system using MapInfo Professional version 6.0. The data includes a set of ESRI Arcview shape files translated from the native MapInfo files. The software programs used to validate and quality control the vector data included MapInfo, Topocheck, Universal Translator (the FME translation engine included with MapInfo), and ArcLink.

Data_Quality_Information:
Logical_Consistency_Report:
Regions were repeatedly checked using TopoCheck 2.00 and reported overlaps, bow ties, shared nodes, slivers and gores were fixed. MapInfo’s check region command was also used as well as SQL queries for identifying overlapping spatial features. Final quality control was verified by translating the regions into ESRI shape file and e00 formats and inspecting translation reports.
Completeness_Report:
Aquifers presented in this data set do not include all aquifers in New York State. Omissions include aquifers on Long Island, and aquifers below the original LLRW minimum mapping unit criterion of less than 1 square mile that was applied to the initial digital capture of features shown on the USGS maps. In addition, a number of smaller aquifer features within the original digital aquifer boundaries are not included in this data set as these features were below the accuracy of the mapping process used. In this newest edition, some omitted aquifers were added.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value:
Horizontal_Positional_Accuracy_Explanation: No quantitative tests
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: Not applicable
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value: 0
Vertical_Positional_Accuracy_Explanation: Not applicable
Lineage:
Process_Step:
Process_Description:
Original aquifer regions were edited to reflect potential yield boundaries shown on the original paper maps and digitized directly using the computer monitor display. Regions were edited using MapInfo Professional version 6.0 with new regions being clipped directly from the original aquifer boundaries. Each new aquifer was individually attributed according to mapped values. Temporary region objects were also created to facilitate editing processes. All region objects were inspected for errors using a sequential process throughout the editing process.
Process_Date: 200106

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method:

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 18
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: .9996
Longitude_of_Central_Meridian: -75.0
Latitude_of_Projection_Origin: 0
False_Easting: 500000
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.61
Ordinate_Resolution: 0.61
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:
Overview_Description:
Aquifers are listed according to three types (Aquifer_type: confined, unconfined, unknown). The GPM (gallons per minute) field lists four potential yields (GPM: 5 ->500; 10 - 100; >100, and blank). For confined aquifers (not linked directly to surface flow), only a single range yield is provided (5 ->500) with no further information. For unconfined aquifers, potential yield is refined into the two categories of 10 - 100 and >100. Unknown aquifer types do not list potential yields. An example of mapped aquifer yield data is provided in an accompanying file (Chemung_Aquifer.jpg). Area (square meters) and perimeter (meters) is provided for each aquifer polygon. A comments field includes two main categories of information. For aquifers of unknown aquifer type, comments include geologic descriptors used in the original data to identify a probable aquifer location. Geologic descriptor values include: L - Lacustrine or eolian deposits, fine to medium sand that probably yields less than 10 gallons per minute; G - kame, kame terrace, kame moraine, outwash, or alluvium, sand and gravel of unknown thickness or saturation where yield potential is greater when streams are present; M - Moraine, mostly till and lacustrine deposits (very fine sand, silt and clay deposits) capped in some places with unsaturated sand and gravel with thin scattered confined aquifers of sand and gravel in some places; U - confined aquifer, areas of lacustrine deposits or till, possibly underlain by sand and gravel aquifers where depth and saturated thickness of aquifer not investigated. The second category of information under the comments field applies only to confined aquifer types and indicates whether a surficial aquifer is also present.
Detailed_Description:
Entity_Type:
Entity_Type_Label: GPM - gallons per minute
Detailed_Description:
Entity_Type:
Entity_Type_Label: Aquifer_Type
Attribute:
Attribute_Label: confined
Attribute:
Attribute_Label: unconfined
Attribute:
Attribute_Label: unknown

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NYS GIS Clearinghouse (via internet)
Contact_Position:
Contact_Address:
Address_Type: Mailing and physical address
Address:
City: Albany
State_or_Province: NY
Postal_Code:
Country: USA
Contact_Voice_Telephone:
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address:
Resource_Description: New York State Aquifers
Distribution_Liability: None
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://nysgis.state.ny.us/inventories/health.htm>
Fees:
Available for free electronic download to members of the NYS GIS Data Sharing Cooperative through the NYS GIS Clearinghouse <http://www.nysgis.state.ny.us>.

Metadata_Reference_Information:
Metadata_Date: 20110711
Metadata_Contact: Scarlet Messier, D. Peter Berical
Contact_Information:
Contact_Organization_Primary: D. Peter Berical
Contact_Organization:
Contact_Address:
Address_Type: Mailing and physical address
Address:
City: Troy
State_or_Province: NY
Postal_Code: 12180
Country: USA
Contact_Voice_Telephone: (518) 402-7650
Contact_Facsimile_Telephone: (518) 402-7599
Contact_Electronic_Mail_Address: dpb07@health.state.ny.us, sem10@health.state.ny.us
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

Generated by mp version 2.2.3 on Tue Aug 7 15:30:22 2001