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Index of USGS Topographic Maps, New York State, 2000

Identification Information
Citation
Originator
Mann Library, Cornell University
Publication Date
20171205
Title
Index of USGS Topographic Maps, New York State, 2000
Geospatial Data Presentation Form
raster digital data
Publication Information
Publication Place
Ithaca, New York
Publisher
Mann Library, Cornell University
Online Linkage
https://cugir.library.cornell.edu/catalog/cugir-009001
Abstract
This is an index of county-based mosaics of USGS topographic maps. Map images were derived from scans of USGS 7.5 minute quadrangle maps (Digital Raster Graphics) circa 2000, from which the map collar information was removed. Images are GeoTIFF files in NAD83, UTM zone 18.
Purpose
A DRG is useful as a source or background layer in a GIS, as a means to perform quality assurance on other digital products, and as a source for the collection and revision of DLG data.
Supplemental Information
1. Checking a sample of the DRGs produced by the U.S.G.S. indicated that the images were mis-registered by as much as 5 pixels (about 12 meters). Although the images were re-registered in an effort to reduce this error, perfect registration was not always possible. We found that some of the original images were scanned with distortion that could not be removed in the re-registration process. Thus, an unknown proportion of the images have errors which, when combined with any errors in the original maps, may exceed the limits of the National Map Accuracy Standards adhered to by the original maps. If a scanned image is to be used where accuracy at the 1:24,000 scale is needed, its registration accuracy should be verified. 2. The maps upon which the images are based used either metric contours in meters or English contours in feet. There is no easy way to determine which units are used for a particular image because the map collar information is not present. Users need to be aware of the need to use care in determining elevation units from these images. 3. For more background on Digital Raster Graphics, refer to the USGS.
Temporal Extent
Currentness Reference
Ground Condition
Time Period
Beginning
1942
End
2000
Bounding Box
West
-79.762152
East
-71.856214
North
45.01585
South
40.496103
Theme Keyword
Digital Raster Graphic
basemaps
topographic maps
topo maps
index map
Theme Keyword Thesaurus
None
ISO Topic Category
imageryBaseMapsEarthCover
Theme Keyword
basemaps
index map
Theme Keyword Thesaurus
CUGIR Category
Place Keyword
New York State
Place Keyword Thesaurus
None
Temporal Keyword
Access Restrictions
None
Use Restrictions
Acknowledgement of the USGS would be appreciated in products derived from these data.
Status
Complete
Maintenance and Update Frequency
Irregular
Point of Contact
Contact Organization
New York State Department of Environmental Conservation
Delivery Point
625 Broadway
City
Albany
State
NY
Postal Code
12233-4754
Country
USA
Contact Telephone
518-402-8940
Contact Electronic Mail Address
kfbarnes@gw.dec.state.ny.us
Data Quality Information
Logical Consistency Report
Not Applicable
Completeness Report
The DRG is a faithfully reproduced digital images of the original source map. Some differences may be detected between the source graphic used and the DRG due to the RGB values assigned that particular color. The intent is to recreate those colors as near as possible. Data completeness for DRG files reflect content of the source graphic. Features may have been eliminated or generalized on the source graphic due to scale and legibility constraints. For information on collection and inclusion criteria, see U.S. Geological Survey, 1994, 24,000-Scale Digital Line Graphs and Natioal Mapping Program Technical Instructions and U.S. Geological Survey, 1994, Standards National Mapping Program Technical Instructions.
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
62
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
-075.000000
Latitude of Projection Origin
+00.000000
False Easting
500000
False Northing
0
Planar Coordinate Information
Planar Coordinate Encoding Method
row and column
Coordinate Representation
Abscissa Resolution
2.5
Ordinate Resolution
2.5
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
Distribution Information
Format Name
GeoJSON
Format Name
metadata
Format Name
HTML metadata
Distributor
Albert R. Mann Library
Online Access
https://cugir-data.s3.amazonaws.com/00/90/01/cugir-009001-index.geojson
Online Access
https://cugir-data.s3.amazonaws.com/00/90/01/fgdc.xml
Online Access
https://cugir-data.s3.amazonaws.com/00/90/01/fgdc.html
Name
Metadata Reference Information
Metadata Date
20190524
Metadata Contact
Contact Information
Contact Organization Primary
Contact Organization
Albert R. Mann Library
Contact Address
Address
Albert R. Mann Library
City
Ithaca
State or Province
New York
Postal Code
14853
Country
USA
Contact Voice Telephone
607-255-5406
Contact Electronic Mail Address
mann-ref@cornell.edu
Metadata Standard Name
FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version
FGDC-STD-001-1998
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