Where can I find scripts to convert raster data formats from The National Map?
Download a set of scripts to help in the transition of raster data from The National Map to different file formats. These scripts require either Geospatial Data Abstraction Library (GDAL) or ESRI ArcGIS software for raster data file conversions. Documentation is under the 'How_To' folder.
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Is there a user guide on how to download data using The National Map?
See the online National Map Viewer Quick Start Guide . For brief instructions, click on the "How to" link at the top of The National Map Downloader . Training videos are also available.
Is there an API for accessing The National Map data?
An Application Programming Interface (API) is a way for developers to interface with data. The National Map (TNM) has one API (TNMAccess) that provides access to all TNM downloadable products that are available through The National Map Download Client . Developers can use HTTP GET and POST requests to directly access products, or use the light graphical interface on the API page to generate...
Are there any costs or restrictions to usage of data downloaded from The National Map?
Data from The National Map is free and in the public domain. There are no restrictions on downloaded data; however, we request that the following statement be used when citing, copying, or reprinting data: "Data available from U.S. Geological Survey, National Geospatial Program." Learn more: USGS Copyrights and Credits Statement
Can The National Map data be downloaded via direct links?
Direct access to The National Map data is provided via browsable links through: Amazon's Cloud USGS Server - https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/ Navigate to the appropriate theme folders to access staged products for download. Data can also be downloaded using The National Map Download Client , 3DEP LidarExplorer (lidar only), TopoView (topographic maps only), and the Download...
What map projections are used in The National Map tiled base map services and dynamic overlay services?
The projection used for all tiled base map services in The National Map is the World Geodetic System 1984 (WGS 84) Web Mercator (Auxiliary Sphere) so that base map services can be used in combination with other common viewers. See Spatial Reference SR-ORG:6928 and Spatial Reference SR-ORG:7483 . Dynamic overlay services are in WGS84 (see Spatial Reference EPSG:4326 ) but can be reprojected as...
What is the difference between tiled and dynamic services?
A tiled service contains cached tiles that render the map in small tile images. This allows the map to perform much faster when panning and zooming, compared to a dynamic service. Dynamic is considered an "older" way of displaying web maps, where each feature is called from the source data and drawn separately for every pan and zoom. Tiled base maps are cached from global scale to a scale of 1:9...
How do I download The National Map data products?
Download or access The National Map data products via several applications and websites: The National Map Download Client – The primary site for data downloads. See the training videos (lessons 4a-4d) or click the Help link at the top of the Downloader for detailed instructions. LidarExplorer – Lidar Point Cloud data only. See where lidar is available, get a list of downloadable products, and...
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- FAQ
Is there a user guide on how to download data using The National Map?
See the online National Map Viewer Quick Start Guide . For brief instructions, click on the "How to" link at the top of The National Map Downloader . Training videos are also available.
Is there an API for accessing The National Map data?
An Application Programming Interface (API) is a way for developers to interface with data. The National Map (TNM) has one API (TNMAccess) that provides access to all TNM downloadable products that are available through The National Map Download Client . Developers can use HTTP GET and POST requests to directly access products, or use the light graphical interface on the API page to generate...
Are there any costs or restrictions to usage of data downloaded from The National Map?
Data from The National Map is free and in the public domain. There are no restrictions on downloaded data; however, we request that the following statement be used when citing, copying, or reprinting data: "Data available from U.S. Geological Survey, National Geospatial Program." Learn more: USGS Copyrights and Credits Statement
Can The National Map data be downloaded via direct links?
Direct access to The National Map data is provided via browsable links through: Amazon's Cloud USGS Server - https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/ Navigate to the appropriate theme folders to access staged products for download. Data can also be downloaded using The National Map Download Client , 3DEP LidarExplorer (lidar only), TopoView (topographic maps only), and the Download...
What map projections are used in The National Map tiled base map services and dynamic overlay services?
The projection used for all tiled base map services in The National Map is the World Geodetic System 1984 (WGS 84) Web Mercator (Auxiliary Sphere) so that base map services can be used in combination with other common viewers. See Spatial Reference SR-ORG:6928 and Spatial Reference SR-ORG:7483 . Dynamic overlay services are in WGS84 (see Spatial Reference EPSG:4326 ) but can be reprojected as...
What is the difference between tiled and dynamic services?
A tiled service contains cached tiles that render the map in small tile images. This allows the map to perform much faster when panning and zooming, compared to a dynamic service. Dynamic is considered an "older" way of displaying web maps, where each feature is called from the source data and drawn separately for every pan and zoom. Tiled base maps are cached from global scale to a scale of 1:9...
How do I download The National Map data products?
Download or access The National Map data products via several applications and websites: The National Map Download Client – The primary site for data downloads. See the training videos (lessons 4a-4d) or click the Help link at the top of the Downloader for detailed instructions. LidarExplorer – Lidar Point Cloud data only. See where lidar is available, get a list of downloadable products, and...
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