National Elevation Dataset

Metadata:

Identification_Information
Spatial_Data_Organization_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey (USGS), EROS Data Center

Publication_Date: 1999

Title: National Elevation Dataset

Edition: 1

Geospatial_Data_Presentation_Form: raster digital data

Publication_Information:

Publication_Place: Sioux Falls, SD
Publisher: U.S. Geological Survey

Online_Linkage: <http://gisdata.usgs.net/ned/>

Description:

Abstract:

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:

Geospatial elevation data are utilized by the scientific and resource management communities for global change research, hydrologic modeling, resource monitoring, mapping, and visualization applications.

Supplemental_Information:

(Source DEM information)

QUADNAME	RESOLUTION	ULLAT	ULLON	LRLAT	LRLON	HDATUM	ZMIN	ZMAX	ZMEAN	ZSIGMA	PMETHOD	QUADDATE
shinglehouse_PA	10	42	-78.24970245	41.875	-78.12470245	27	439.36801147	757.26800537	559.59197998	74.22180176	5	20001201
rawson_NY	10	42.375	-78.37470245	42.25	-78.24970245	27	454.06600952	672.76599121	572.89801025	52.99700165	5	19981008
freedom_NY	10	42.5	-78.37470245	42.375	-78.24970245	27	445.84298706	671.44299316	578.53302002	45.11539841	5	19981008
friendship_NY	10	42.25	-78.24970245	42.125	-78.12470245	27	446.89700317	721.49700928	586.12701416	55.55500031	5	19981008
fillmore_NY	10	42.5	-78.12470245	42.375	-77.99970245	27	344.2460022	618.64599609	481.9750061	68.76329803	5	19981003
west_almond_NY	10	42.375	-77.99970245	42.25	-77.87470245	27	440.47299194	696.97302246	584.15002441	53.31380081	5	19981003
nunda_NY	10	42.625	-77.99970245	42.5	-77.87470245	27	198.05000305	622.75	409.80599976	100.28099823	5	19981003
alfred_NY	10	42.375	-77.87470245	42.25	-77.74970245	27	414.27999878	708.38000488	580.27301025	68.32240295	5	19981003
bullis_mills_PA	10	42	-78.37470245	41.875	-78.24970245	27	426.57501221	726.375	547.00799561	69.50830078	5	20001201
harrison_valley_PA	10	42	-77.74970245	41.875	-77.62470245	27	461.57501221	788.97497559	645.49597168	61.41500092	5	20001001
belmont_NY	10	42.25	-78.12470245	42.125	-77.99970245	27	400.37298584	715.57299805	552.02001953	77.35320282	5	19981003
canaseraga_NY	10	42.5	-77.87470245	42.375	-77.74970245	27	340.96899414	654.86901855	522.09301758	69.49160004	5	19981003
ossian_NY	10	42.625	-77.87470245	42.5	-77.74970245	27	176.66499329	624.96502686	465.1539917	102.54699707	5	19981003
portville_NY	10	42.125	-78.37470245	42	-78.24970245	27	426.97198486	728.87200928	528.84301758	69.40010071	5	19981008
ulysses_PA	10	42	-77.87470245	41.875	-77.74970245	27	487.76599121	780.36602783	646.71398926	56.13710022	5	20001001
rexville_NY	10	42.125	-77.74970245	42	-77.62470245	27	485.68701172	732.98699951	659.46502686	42.1332016	5	19981003
andover_NY	10	42.25	-77.87470245	42.125	-77.74970245	27	473.37701416	717.67700195	621.23602295	55.59619904	5	19981003
bliss_NY	10	42.625	-78.37470245	42.5	-78.24970245	27	465.56600952	644.86602783	563.35101318	35.35960007	5	19981008
black_creek_NY	10	42.375	-78.24970245	42.25	-78.12470245	27	371.95599365	675.85601807	522.24401855	64.27140045	5	19981008
pike_NY	10	42.625	-78.24970245	42.5	-78.12470245	27	418.35900879	641.85900879	533.51098633	42.73770142	5	19981008
birdsall_NY	10	42.5	-77.99970245	42.375	-77.87470245	27	396.37200928	661.67199707	568.00701904	41.55979919	5	19981003
greenwood_NY	10	42.25	-77.74970245	42.125	-77.62470245	27	405.28399658	732.98400879	628.13702393	73.5266037	5	19981003
houghton_NY	10	42.5	-78.24970245	42.375	-78.12470245	27	356.43399048	637.434021	473.4710083	61.59769821	5	19981008
oswayo_PA	10	42	-78.12470245	41.875	-77.99970245	27	457.86801147	758.66802979	603.86499023	60.87060165	5	20001201
wellsville_south_NY	10	42.125	-77.99970245	42	-77.87470245	27	447.65701294	760.05700684	572.07299805	66.89450073	5	19981003
cuba_NY	10	42.25	-78.37470245	42.125	-78.24970245	27	440.28601074	716.28601074	561.95397949	63.25329971	5	19981008
allentown_NY	10	42.125	-78.12470245	42	-77.99970245	27	459.98800659	776.88800049	626.98699951	68.97070313	5	19981003
ellisburg_PA	10	42	-77.99970245	41.875	-77.87470245	27	481.77801514	780.97802734	662.14398193	54.38759995	5	20001001
arkport_NY	10	42.5	-77.74970245	42.375	-77.62470245	27	248.67799377	642.17797852	469.39001465	79.96320343	5	19981003
dansville_NY	10	42.625	-77.74970245	42.5	-77.62470245	27	174.65899658	640.559021	376.83099365	119.75099945	5	19981003
bolivar_NY	10	42.125	-78.24970245	42	-78.12470245	27	441.78500366	750.98498535	590.34698486	63.707901	5	19981008
whitesville_NY	10	42.125	-77.87470245	42	-77.74970245	27	487.5710144	745.17102051	634.89300537	51.27700043	5	19981003
angelica_NY	10	42.375	-78.12470245	42.25	-77.99970245	27	374.84698486	669.54699707	489.93399048	67.93440247	5	19981003
portageville_NY	10	42.625	-78.12470245	42.5	-77.99970245	27	202.54200745	600.54199219	422.82400513	60.99950027	5	19981003
wellsville_north_NY	10	42.25	-77.99970245	42.125	-77.87470245	27	429.06799316	715.86798096	573.93902588	74.84549713	5	19981003
hornell_NY	10	42.375	-77.74970245	42.25	-77.62470245	27	338.76599121	704.16601563	490.37200928	89.0279007	5	19981003

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19990201
Ending_Date: Unknown

Currentness_Reference: publication date

Status:

Progress: In work
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate:-78.31767721
East_Bounding_Coordinate:-77.71146438
North_Bounding_Coordinate:42.52501817
South_Bounding_Coordinate:41.98471974

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD Parameter Keywords
Theme_Keyword: EARTH SCIENCE
Theme_Keyword: LAND SURFACE
Theme_Keyword: TOPOGRAPHY
Theme_Keyword: LANDFORMS
Theme_Keyword: TERRAIN ELEVATION
Theme_Keyword: 1-DEGREE DEM
Theme_Keyword: 2-ARC-SECOND DEM
Theme_Keyword: 7.5-MINUTE DEM
Theme_Keyword: CARTOGRAPHY
Theme_Keyword: DEM
Theme_Keyword: DIGITAL ELEVATION MODEL
Theme_Keyword: DIGITAL MAPPING
Theme_Keyword: EDC
Theme_Keyword: EROS
Theme_Keyword: GEODATA
Theme_Keyword: GIS
Theme_Keyword: MAPPING
Theme_Keyword: RASTER
Theme_Keyword: USGS

Place:

Place_Keyword_Thesaurus: GCMD Location Keywords
Place_Keyword: NORTH AMERICA
Place_Keyword: UNITED STATES
Place_Keyword: UNITED STATES OF AMERICA

Access_Constraints: None

Use_Constraints:

None. Acknowledgement of the originating agencies would be appreciated in products derived from these data.

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Customer Services Representative
Contact_Organization: EROS Data Center

Contact_Address:

Address_Type: mailing and physical address
Address:: U.S. Geological Survey EROS Data Center
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198
Country: USA

Contact_Voice_Telephone: 605-594-6151

Contact_Facsimile_Telephone: 605-594-6589

Contact_Electronic_Mail_Address: custserv@edcmail.cr.usgs.gov

Resource_Description: National Elevation Dataset (NED)

Distribution_Liability:

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.

Metadata_Reference_Information:

Metadata_Date: 19990211

Metadata_Contact: