View Metadata
DEM (30m), Wisconsin 1998
- Identification Information
- Spatial Reference Information
- Data Quality Information
- Distribution Information
- Content Information
- Spatial Representation Information
- Metadata Reference Information
Identification Information
- Citation
- Title
- DEM (30m), Wisconsin 1998
- Publisher
- Wisconsin Department of Natural Resources
- Place of Publication
- Madison , WI , US
- Publication Date
- 1998-01-01
- Geospatial Data Presentation Form
- mapDigital
- Collection Title
- Statewide
- Other Citation Details
- The majority of the 1-Degree DEMs were originally produced by the US Defense Mapping Agency. Refer to the USGS for details: http://mac.usgs.gov/mac/isb/pubs/factsheets/fs04000.html#dem
- Abstract
- This Grid-format Digital Elevation Model (DEM) is a raster representation of land elevation of Wisconsin. This DEM ("demgw930") is derived from the 7.5-minute DEMs published by the US Geological Survey (USGS). This DEM is an integer grid, with elevation units in meters relative to the National Geodetic Vertical Datum of 1929 (NGVD 29). The 7.5-minute DEMs have a 30-meter pixel cell size, or resolution. More current or detailed DEMs may also be available directly from the USGS. For more information, refer to the USGS DEM Fact Sheet:
- Purpose
- These data provide a highly generalized, statewide representation of land surface elevation for mapping purposes. The data are not intended for landscape scale analysis.
- Supplemental Information
- The spatial extent this data layer is the state of Wisconsin, plus a buffer around the perimeter extending approximately 5,000 meters beyond the state boundary. The DEM includes elevation values every 30 meters or 98.4 feet. Elevation units are in meters. ArcView with the Spatial Analyst Extension, ArcInfo/ArcGIS Grid, or comparable GIS software is needed to use the Grid format data meaningfully. Time period extent for this content is 1990-2000.
- Temporal Extent
- Currentness Reference
- publication date
- Time Instant
- 1998-12-31T00:00:00
- Bounding Box
- West
- -93.032613
- East
- -86.597506
- North
- 47.128225
- South
- 42.410356
- ISO Topic Category
- elevation
- environment
- Place Keyword
-
Wisconsin
- Place Keyword Thesaurus
- GNIS
- Theme Keyword
-
Raster
- Theme Keyword Thesaurus
- FGDC
- Theme Keyword
-
Digital elevation models
- Theme Keyword Thesaurus
- LCSH
- Theme Keyword
- DEM
- elevation
- hypsography
-
environment
- Theme Keyword Thesaurus
- Legal Constraints
- Use Limitation
- Refer to: http://www.dnr.state.wi.us/org/legal/WebSiteLegalInformation.html
- Status
- completed
- Maintenance and Update Frequency
- notPlanned
- Language
- eng
- Credit
- Wisconsin Department of Natural Resources and United States Geological Survey (USGS)
- Point of Contact
- Contact
- Wisconsin DNR
- Position Name
- GIS Data Specialist
- Delivery Point
- P.O. Box 7921
- City
- Madison
- Administrative Area
- WI
- Postal Code
- 53707-7921
- Country
- US
- John.Laedlein@dnr.state.wi.us
- Phone
- (608) 264-8916
Spatial Reference Information
- Reference System Identifier
- Code
- 3071
- Code Space
- EPSG
- Version
Data Quality Information
- Absolute External Positional Accuracy
- Absolute External Positional Accuracy
- Lineage
- Process Step
- Description
- The DNR Geographic Services Section received the initial data in ArcInfo Grid format, projected to UTM zones (NAD27 or NAD83). DNR staff reprojected the data to WTM83/91 and combined them into a statewide grid.
- Process Date
- 1990-01-01T00:00:00
- Process Step
- Description
- A mix of Level 2 and Level 1 DEMs were obtained from the USGS over a number of years as 1:24K quad or quarter-quad tiles. Filtered Level 1 30-meter DEM tiles obtained from the USGS in January of 2000 were the result of processing that the USGS carried out to improve display characteristics. Additional information about this filtering is believed to be available on the USGS DEM website. The resulting DEM is a "composite" 30-meter DEM including Level 2 coverage where it exists, and Level 1 elsewhere.
- Process Date
- 1998-20-00T00:00:00
- Source
- Title
- 7.5-minute Digital Elevation Model (30- x 30-m data spacing, cast on Universal Transverse Mercator (UTM) projection)
- Originator
- United States Geological Survey
- Publisher
- United States Geological Survey
- Description
- Includes land surface elevation information.
Distribution Information
- Format Name
- Raster Dataset
- Distributor
- UW-Madison
- Distributor
- Wisconsin Department of Natural Resources
- Online Access
- https://gisdata.wisc.edu/public/WI_DEM30m_1998.zip
- Protocol
- WWW:DOWNLOAD-1.0-http--download
- Name
- GeoData@Wisconsin
- Function
- download
Content Information
- Content Type
- physicalMeasurement
Spatial Representation Information
- Raster
- Number of Dimensions
- 2
- Column Count
- 16282
- Row Count
- 17310
- Cell Geometry Type
- area
- Corner Points
- Point
- 289830.682345 220113.456002
- Point
- 289830.682345 739413.456002
- Point
- 778290.682345 739413.456002
- Point
- 778290.682345 220113.456002
- Center Point
- 534060.682345 479763.456002
Metadata Reference Information
- Hierarchy Level
- dataset
- Metadata File Identifier
- 400C0E52-0050-414B-A951-D899FFFB3BCB
- Metadata Date Stamp
- 2019-07-02
- Metadata Standard Name
- ISO 19139 Geographic Information - Metadata - Implementation Specification
- Metadata Standard Version
- 2007
- Character Set
- utf8