This shapefile contains polygons representing the stream basins
of the Allegheny River watershed in western New York. Basins were
developed for stream segments at the 1:24,000 scale from 7.5 minute
topographic quadrangles. For the purposes of this study, a stream
segment is defined as the portion of stream from tributary confluence to
tributary confluence.
Purpose
To define the drainage basin for each stream segment.
Supplemental Information
This dataset was developed as part of the "Application of Gap
Analysis to Aquatic Biodiversity Conservation", a pilot study by the New
York Cooperative Fish and Wildlife Research Unit. See
http://aquagap.cfe.cornell.edu/
Temporal Extent
Currentness Reference
publication date
Time Instant
19960124
Bounding Box
West
-79.759144
East
-77.959902
North
42.448981
South
41.976192
Theme Keyword
Basin
Sub-Basin
Watershed boundaries
Sub-watershed boundaries
Theme Keyword Thesaurus
None
Theme Keyword
Hydrography
Rivers
Watersheds
Theme Keyword Thesaurus
LCSH
ISO Topic Category
environment
inlandWaters
Theme Keyword
environment
inland waters
Theme Keyword Thesaurus
CUGIR Category
Place Keyword
New York
Allegheny River
Place Keyword Thesaurus
None
Temporal Keyword
Access Restrictions
None
Use Restrictions
Although these data have been processed successfully on a computer
system at the New York Aquatic Gap Analysis Group, no warranty expressed
or implied is made regarding the accuracy or utility of the data on any
other system or for general or scientific purposes, nor shall the act of
distribution constitute any such warranty. This disclaimer applies both to
individual use of the data and aggregate use with other data. It is
strongly recommended that these data are directly acquired from a New York
Aquatic Gap Analysis Group server, and not indirectly through other
sources which may have changed the data in some way. It is also strongly
recommended that careful attention be paid to the contents of the metadata
file associated with these data. The New York Aquatic Gap Analysis Group
shall not be held liable for improper or incorrect use of the data
described and/or contained herein.
Status
Complete
Maintenance and Update Frequency
None planned
Point of Contact
Contact Person
Marci Meixler
Delivery Point
208 Fernow Hall
Delivery Point
Department of Natural Resources
Delivery Point
Cornell University
City
Ithaca
State
NY
Postal Code
14853
Country
U.S.A.
Contact Telephone
(607) 255-2038
Contact Facsimile Telephone
(607)255-1895
Contact Electronic Mail Address
msm10@cornell.edu
Data Quality Information
Logical Consistency Report
Unknown
Completeness Report
Unknown
Horizontal Positional Accuracy Report
Positional accuracy is limited to the extent that polygons
were created from hand delineation using 1:24,000-scale topographic
maps.
Lineage
Spatial Data Organization Information
Direct Spatial Reference Method
Vector
Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object Type
G-polygon
Point and Vector Object Count
762
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
0.999600
Longitude of Central Meridian
-75.000000
Latitude of Projection Origin
0.000000
False Easting
500000.000000
False Northing
0.000000
Planar Coordinate Information
Planar Coordinate Encoding Method
coordinate pair
Coordinate Representation
Abscissa Resolution
0.000256
Ordinate Resolution
0.000256
Planar Distance Units
meters
Geodetic Model
Horizontal Datum Name
North American Datum of 1927
Ellipsoid Name
Clarke 1866
Semi-major Axis
6378206.400000
Denominator of Flattening Ratio
294.978698
Entity and Attribute Information
Entity Type
Entity Type Label
AlleghenyBas
Entity Type Definition
A stream basin within the Allegheny River watershed
Entity Type Definition Source
New York Aquatic Gap Analysis Group
Attributes
AREA
area of polygon, in square meters (0 to Unbounded)
