METADATA FOR THE DIGITAL ELEVATION MODEL (DEM) OF THE ST. REGIS RIVER BASIN

Identification Information:

Citation:
Citation Information:
Originator: Adirondack Park Agency
Publication Date: 200101
Title of Data Set: Digital Elevation Model of the St. Regis River Basin
Edition:
Presentation Form: map
Publication Information:
Publication Place: Ray Brook, New York State
Publisher: Adirondack Park Agency
Online Linkage:

Description:
Abstract: This data contains a Digital Elevation Model (DEM) for the Adirondack Park, New York State.
Purpose: Individual 7.5-minute quadrangle DEM grids were mosaiced together into a single comprehensive raster grid and masked in ArcView to the boundary of the St. Regis River Basin. The DEMs can be used for the ortho correction of aerial photography and as a layer in geographic information systems for natural and social science analysis. DEMs can also serve as a tool for volumetric analysis (such as flow direction, flow accumulation, and watershed analyses), for site location of towers, or for drainage delineation.
Supplemental Information: The original 7.5-minute quadrangle 10-meter resolution DEMs were developed by the New York State Department of Environmental Conservation as part of the National Mapping Program. They can be downloaded as individual quads from The Cornell University Geospatial Information Repository at http://cugir.mannlib.cornell.edu/index.html.
Scale: 1:24,000

Time Period of Content:
Time Period Information:
Beginning Date:
Ending Date: Unknown
Currentness Reference: ground condition
Status:
Progress: Complete
Maintenance and Update Frequency: Irregular

Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -74.8385
East Bounding Coordinate: -74.1508
North Bounding Coordinate: 44.7158
South Bounding Coordinate: 44.3113

Keywords:
Theme:
Theme Keyword Reference: NYS GIS Clearinghouse categories
Theme Keyword: elevation
Theme Keyword: Geographic Information System (GIS)
Theme Keyword: Arc/Info Coverage
Theme Keyword: grid
Place:
Place Keyword Thesaurus: None
Place Keyword: New York
Place Keyword: Adirondack Park
Place Keyword: Adirondack Mountains
Place Keyword: Adirondacks
Place Keyword: St. Regis River Drainage Basin
Place Keyword: St. Regis River

Access Constraints: Data is available from the Adirondack Park Agency
Use Constraints: Data is to be used at the scale intended.

Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Adirondack Park Agency
Contact Person Primary:
Contact Person: John W. Barge
Contact Address:
Address Type: Mailing Address
Address: P.O. Box 99, Route 86
City: Ray Brook
State or Province: New York
Postal Code: 12977
Contact Voice Telephone: 518-891-4050
Contact Fascimile: 518-891-3938
Contact Electronic Mail Address: jwbarge@gw.dec.state.ny.us

Native Data Set Environment: Windows NT, ARC/INFO version 8.0, 2.7 MB

Return to top of page

Data Quality Information:

Attribute Accuracy Report:

Logical Consistency Report:

Completeness Report:

Positional Accuracy:
Horizontal Positional Accuracy Report:
Quantitative Horizontal Positional Accuracy Assessment:
Horizontal Positional Accuracy Value:
Horizontal Positional Accuracy Explanation:

Process Description: Applied GIS, Inc. processing steps: The individual DEMs were combined into a single composite grid using the MOSAIC command in the Spatial Tools extension of ArcView ( download http://gis.esri.com/arcscripts/details.cfm?CFGRIDKEY=721339607). The composite 10-meter grid was then clipped by recalculating it while a grid of the boundary of the St. Regis watershed was the set as the Mask theme.

QA/QC analysis: Quality Assurance/Quality Control was determined by filling "sinks" in the DEM. Sinks are cells within the DEM whose elevation value is much lower than the surrounding cells causing the sink cells to have undefined flow direction. To fill sinks it is necessary to turn on the Hydrologic Modeling extension in ArcView and make the DEM theme active. Then, from the Hydro menu choose 'Fill Sinks'.

Return to top of page

Spatial Data Organization Information:

Direct Spatial Reference Method: Raster (10-meter resolution)

Return to top of page

Spatial Reference Information:

Horizontal Coordinate System Definition:
Geographic: Universal Transverse Mercator (UTM)
UTM Zone: 18
Geodetic Model: Clarke 1866
Horizontal Datum: North American Datum of 1927

Return to top of page

Entity and Attribute Information:

Overview Description:
Entity and Attribute Overview: The item, VALUE, contains the elevation values for this floating point grid.
Entity and Attribute Detail Citation:

Return to top of page

Distribution Information:

Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: Adirondack Park Agency
Contact Person Primary:
Contact Person: John W. Barge

Contact Address:
Address Type: Mailing Address
Address: P.O. Box 99, Route 86
City: Ray Brook
State or Province: New York
Postal Code: 12977
Contact Voice Telephone: 518-891-4050
Contact Fascimile Telephone: 518-891-3938
Contact Electronic Mail Address: jwbarge@gw.dec.state.ny.us Distribution Liability:

Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: ARCE
Digital Transfer Option: CD-ROM
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name:
Fees: None

Return to top of page

Metadata Reference Information:

Metadata Date: 200008
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Adirondack Park Agency
Contact Address:
Address Type: Mailing and Physical Address
Address: P.O. Box 99, Route 86
City: Ray Brook
State or Province: New York
Postal Code: 12977
Contact Voice Telephone: 518-891-4050
Contact Fascimile Telephone: 518-891-3938
Contact Electronic Mail Address: jwbarge@gw.dec.state.ny.us
Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998

Return to top of page