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National Elevation Dataset Milwaukee County, Wisconsin 1999
- Identification Information
- Spatial Reference Information
- Data Quality Information
- Distribution Information
- Content Information
- Spatial Representation Information
- Metadata Reference Information
Identification Information
- Citation
- Title
- National Elevation Dataset Milwaukee County, Wisconsin 1999
- Originator
- U.S. Geological Survey
- Publication Date
- 1999-01-01
- Identifier
- https://geodiscovery.uwm.edu/catalog/ark:-77981-gmgs3x83k17
- Geospatial Data Presentation Form
- mapDigital
- Other Citation Details
- Date Acquired: September 7, 2007
- Abstract
- This ArcGrid data layer represents a National Elevation Dataset for Milwaukee County, Wisconsin in 1999. The dataset was originally published by the U.S. Geological Survey in 1999.[The U.S. Geological Survey has developed a National Elevation Dataset (NED). The NED is a seamless mosaic of best-available elevation data. The 7.5-minute elevation data for the conterminous United States are the primary initial source data. In addition to the availability of complete 7.5-minute data, efficient processing methods were developed to filter production artifacts in the existing data, convert to the NAD83 datum, edge-match, and fill slivers of missing data at quadrangle seams. One of the effects of the NED processing steps is a much-improved base of elevation data for calculating slope and hydrologic derivatives. The specifications for the NED 1 arc second and 1/3 arc second data are: Geographic coordinate system Horizontal datum of NAD83, except for AK which is NAD27 Vertical datum of NAVD88, except for AK which is NAVD29 Z units of meters]
- Purpose
- This layer is intended for reference and mapping purposes and may be used for basic applications such as viewing, querying, and map output production or to provide a basemap to support graphical overlays and analysis with other spatial data.
- Supplemental Information
- AGSL staff supplemented original metadata. For official metadata please see meta1.html.
- Temporal Extent
- Bounding Box
- West
- -88.108333
- East
- -87.729444
- North
- 43.245833
- South
- 42.805556
- ISO Topic Category
- elevation
- Place Keyword
- Milwaukee County
-
Wisconsin
- Place Keyword Thesaurus
- GeoNames
- Theme Keyword
-
Raster
- Theme Keyword Thesaurus
- FGDC
- Theme Keyword
-
Digital elevation models
- Theme Keyword Thesaurus
- LCSH
- Resource Constraints
- Use Limitation
- Please see the UWM Libraries statement on Copyright and Digital Collections.[None. Acknowledgement of the originating agencies would be appreciated in products derived from these data.]
- Legal Constraints
- Use Limitation
- Although this data is being distributed by the American Geographical Society Library at the University of Wisconsin-Milwaukee Libraries, no warranty expressed or implied is made by the University as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the University in the use of this data, or related materials. [Although these data have been processed successfully on a computer system at the U.S. Geological Survey, EROS Data Center, no warranty expressed or implied is made by either regarding the utility of the data on any system, nor shall the act of distribution constitute any such warranty. The USGS will warrant the delivery of this product in computer-readable format and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer peripherals, or when the physical medium is delivered in damaged condition. Requests for adjustments of credit must be made within 90 days from the date of this shipment from the ordering site.]
- Other Restrictions
- None
- Status
- completed
- Maintenance and Update Frequency
- asNeeded
- Language
- eng
- Credit
- U.S. Geological Survey
- Point of Contact
- Contact
- U.S. Geological Survey
- Delivery Point
- 12201 Sunrise Valley Drive
- City
- Reston
- Administrative Area
- VA
- Postal Code
- 20192
- Country
- US
- Phone
- 1-888-275-8747
Spatial Reference Information
- Reference System Identifier
- Code
- 4269
- Code Space
- EPSG
- Version
- 9.8(3.0.1)
Data Quality Information
- Quantitative Attribute Accuracy Report
- Result
- Lineage
- Process Step
- Description
- Changed name of file folder from ned_34599980 to MilwaukeeCounty_NationalElevationDataset_1999.
- Process Date
- 2020-05-11T00:00:00
Distribution Information
- Format Name
- Raster Dataset
- Format Version
- Distributor
- University of Wisconsin-Milwaukee
- Distributor
- U.S. Geological Survey
Content Information
- Content Type
- physicalMeasurement
Spatial Representation Information
- Raster
- Number of Dimensions
- 2
- Column Count
- 1364
- Row Count
- 1585
- Cell Geometry Type
- area
- Corner Points
Metadata Reference Information
- Hierarchy Level
- dataset
- Metadata File Identifier
- ark:/77981/gmgs3x83k17
- Dataset URI
- https://geodata.uwm.edu/public/gmgs3x83k17/MilwaukeeCounty_NationalElevationDataset_1999.zip
- Metadata Point of Contact
- Name
- American Geographical Society Library – UWM Libraries
- Position Name
- GIS Staff
- Delivery Point
- 2311 E Hartord Ave
- City
- Milwaukee
- Administrative Area
- WI
- Postal Code
- 53211
- Country
- US
- gisdata@uwm.edu
- Phone
- (414)-229-6282
- Metadata Date Stamp
- 2022-06-17
- Metadata Standard Name
- ISO 19139 Geographic Information - Metadata - Implementation Specification
- Metadata Standard Version
- 2007
- Character Set
- utf8
