This shapefile contains the boundaries of the 8-digit watersheds
that intersect New York State.
Purpose
These hydrologic unit boundaries provide a uniquely identified
and uniform method of subdividing the state into large drainage areas at
1:250,000 scale.
Supplemental Information
The 8-digit hydrologic unit codes for each watershed indicate the
hydrologic region (first two digits), hydrologic subregion (second two
digits), accounting unit (third two digits), and cataloging unit (fourth
two digits), as defined by the USGS. This dataset was extracted from the
national 1:250,000-scale dataset that is available on the USGS Water
Resources website:
http://water.usgs.gov/GIS/huc.html
Temporal Extent
Currentness Reference
publication date
Time Instant
1994
Bounding Box
West
-80.756076
East
-71.856717
North
44.999905
South
40.096989
Theme Keyword
Hydrologic Units
Watershed Boundaries
8 Digit HUC
Theme Keyword Thesaurus
None
ISO Topic Category
inlandWaters
environment
Theme Keyword
inland waters
environment
Theme Keyword Thesaurus
CUGIR Category
Place Keyword
New York (State)
Place Keyword Thesaurus
LCSH
Temporal Keyword
Access Restrictions
None
Use Restrictions
None
Status
Complete
Maintenance and Update Frequency
None planned
Data Quality Information
Logical Consistency Report
Unknown
Completeness Report
Only watersheds that intersect New York State are included in this
dataset, and these watersheds have been left intact (rather than being
clipped to the state border). Some portions of the northern border of New
York State were not included in the national dataset, and thus are not
included here.
Horizontal Positional Accuracy Report
These data were digitized at a scale of 1:250,000 with some
portions of coverage at 1:100,000 and 1:2,000,000 scale. Limitations
of the data strictly revolve around this scale input. Use of these
boundaries with larger scale data (i.e. 1:24k hydrography) is not
recommended as it would be beyond the resolution capabilities of the
data set.
Lineage
Source
Originator
Steeves, Peter and Douglas Nebert
Publication Date
1994
Title
1:250,000-scale Hydrologic Units of the United States
Edition
1
Geospatial Data Presentation Form
vector digital data
Series Information
Series Name
Open-File Report
Issue Identification
94-0236
Publication Information
Publication Place
Reston, Virginia
Publisher
U.S. Geological Survey
Online Linkage
http://water.usgs.gov/lookup/getspatial?huc250k
Source Scale Denominator
250000
Type of Source Media
online
Source Temporal Extent
Time Period Information
Single Date/Time
Calendar Date
1994
Source Currentness Reference
publication date
Contribution
Data was extracted from this source.
Spatial Data Organization Information
Direct Spatial Reference Method
Vector
Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object Type
Polygon
Point and Vector Object Count
52
Spatial Reference Information
Horizontal Coordinate System Definition
Geographic
Latitude Resolution
0.000001
Longitude Resolution
0.000001
Geographic Coordinate Units
Decimal degrees
Geodetic Model
Horizontal Datum Name
World Geodetic System 1984
Ellipsoid Name
WGS_1984
Semi-major Axis
6378137.000000
Denominator of Flattening Ratio
298.257224
Entity and Attribute Information
Entity Type
Entity Type Label
Watershed
Entity Type Definition
8-Digit Hydrologic Units
Entity Type Definition Source
USGS
Attributes
AREA
Area of the watershed, in square meters (0 to unbounded)
Definition Source
USGS
PERIMETER
Perimeter of the watershed, in meters (0 to unbounded)
Definition Source
USGS
HUC_NUMBER
Hydrologic Unit Code number (Hydrologic Unit Codeshttp://pubs.usgs.gov/wsp/wsp2294/)
Definition Source
USGS
HUC_NAME
Hydrologic Unit Code name (Hydrologic Unit Codeshttp://pubs.usgs.gov/wsp/wsp2294/)
