Identification

Title

USGS NED ned19_n31x50_w092x75_la_statewide_east_2008 1/9 arc-second 2011 15 x 15 minute IMG

Abstract

This tile of the National Elevation Dataset (NED) is 1/9 arc-second resolution. The National Elevation Dataset (NED) serves the elevation layer of The National Map, and provides basic elevation information for earth science studies and mapping applications in the United States. Scientists and resource managers use NED data for global change research, hydrologic modeling, resource monitoring, mapping and visualization, and many other applications. The NED is an elevation dataset that consists of seamless layers and a high resolution layer. Each of these layers are composed of the best available raster elevation data of the conterminous United States, Alaska, Hawaii, territorial islands, Mexico and Canada. The NED is updated continually as new data become available. All NED data are in the public domain. The NED are derived from diverse source data that are processed to a common coordinate system and unit of vertical measure. These data are distributed in geographic coordinates in units of decimal degrees, and in conformance with the North American Datum of 1983 (NAD 83). All elevation values are in meters and, over the continental United States, are referenced to the North American Vertical Datum of 1988 (NAVD 88). The vertical reference will vary in other areas. NED data are available nationally (except for Alaska) at resolutions of 1 arc-second (approx. 30 meters) and 1/3 arc-second (approx. 10 meters), and in limited areas at 1/9 arc-second (approx. 3 meters). In most of Alaska, only lower resolution source data are available. As a result, most NED data for Alaska are at 2-arc-second (approx. 60 meters) grid spacing. Part of Alaska is available at the 1- and 1/3-arc-second resolution from IFSAR collections starting in 2010. Plans are in place for collection of statewide IFSAR in Alaska through 2016.

Resource type

dataset

Resource locator

https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/19/IMG/ned19_n31x50_w092x75_la_statewide_east_2008.zip

name: IMG

description: CSDGM IMPORT ERROR: No digtinfo/formcont

function: information

Unique resource identifier

code

codeSpace

Dataset language

Spatial reference system

code identifying the spatial reference system

Additional information source

This tile of the National Elevation Dataset (NED) is 1/9 arc-second resolution, Image file format, and covers a one degree block. The geographic area of coverage is described below in the Bounding Coordinates. Additional information for the NED may be found on http://ned.usgs.gov/. Data may be downloaded through The National Map Viewer: http://nationalmap.gov/viewer.html. Direct links for direct access by automated services are provided in the Distribution section of this metadata.; {"inventory":"36940285-edd6-8adb-e32f-94551e3f1625"}

Classification of spatial data and services

Topic category

elevation

Keywords

Keyword set

keyword value

Elevation

originating controlled vocabulary

title

NGDA Portfolio Themes

reference date

Keyword set

keyword value

National Elevation Dataset

NED

Elevation

Grid

LIght Detection And Ranging

LIDAR

Interferometric Synthetic Aperture Radar

IFSAR

High Resolution

Topographic Surface

Topography

Bare Earth

Hydro-Flattened

Terrain Elevation

15-minute DEM

1/9 arc-second DEM

Cartography

DEM

Digital Elevation Model

Digital Mapping

Digital Terrain Model

Geodata

GIS

Mapping

Raster

USGS

U.S. Geological Survey

originating controlled vocabulary

title

National Elevation Dataset (NED)

reference date

Keyword set

keyword value

Downloadable Data

originating controlled vocabulary

title

The National Map Type Thesaurus

reference date

Keyword set

keyword value

Elevation

originating controlled vocabulary

title

The National Map Theme Thesaurus

reference date

Keyword set

keyword value

National Elevation Dataset (NED) 1/9 arc-second

National Elevation Dataset (NED)

originating controlled vocabulary

title

The National Map Collection Thesaurus

reference date

Keyword set

keyword value

15 x 15 minute

originating controlled vocabulary

title

The National Map Product Extent Thesaurus

reference date

Keyword set

keyword value

IMG

originating controlled vocabulary

title

The National Map Product Format Thesaurus

reference date

Keyword set

keyword value

US

United States

originating controlled vocabulary

title

Geographic Names Information System

reference date

Geographic location

West bounding longitude

-92.750185185185217

East bounding longitude

-92.49981481481484

North bounding latitude

31.500185185185192

South bounding latitude

31.249814814814822

Temporal reference

Temporal extent

Begin position

1999-01-01

End position

2008-01-01

Dataset reference date

date type

publication

effective date

2011-01-01

Frequency of update

asNeeded

Quality and validity

Lineage

This lineage was generated by the FGDC CSDGM to 19139 transformation

Conformity

Data format

name of format

IMG

version of format

unknown

Constraints related to access and use

Constraint set

Use constraints

Although these data have been processed successfully on a computer system at the U.S. Geological Survey, 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 warranty 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.

Constraint set

Limitations on public access

Use Constraints: There is no guarantee or warranty concerning the accuracy of the data. Users should be aware that temporal changes may have occurred since these data were collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the USGS. Please refer to http://www.usgs.gov/privacy.html for the USGS disclaimer.

Constraint set

Limitations on public access

Access Constraints: None. Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the USGS Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and USGS interests.

Responsible organisations

Metadata on metadata

Metadata point of contact

organisation name

U.S. Geological Survey

full postal address

USGS National Geospatial Program Office

12201 Sunrise Valley Drive

Reston

20192

USA

telephone number

1-888-ASK-USGS (1-888-275-8747)

email address

responsible party role

pointOfContact

Metadata date

2020-12-16

Metadata language