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Index of USGS Topographic Maps, New York State, 2000
- Identification Information
- Data Quality Information
- Spatial Data Organization Information
- Spatial Reference Information
- Distribution Information
- Metadata Reference Information
- 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