What are the Terms of Use/Licensing for map services and data from The National Map?

Map services and data downloaded from The National Map are free and in the public domain. There are no restrictions; however, we request that the following acknowledgment statement of the originating agency be included in products and data derived from our map services when citing, copying, or reprinting:

"Map services and data available from U.S. Geological Survey, National Geospatial Program." 

Learn more: USGS Copyrights and Credits statement

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What data sources are used to produce the 3D Elevation Program (3DEP) DEMs?

The USGS plans to have high-quality lidar  and  IfSAR  (for Alaska) coverage for all of the United States and its territories. As data becomes available, legacy Digital Elevation Models (DEMs) are being systematically replaced with new, high-resolution DEMs produced almost entirely from the lidar and ifsar data.  Sources that were used to produce...

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...

How can I download geospatial vector data in bulk?

The USGS only offers vector downloads in bulk by special request. For assistance, send an e-mail to tnm_help@usgs.gov and include your contact information, requested product, requested area, and download format.

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

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 . Tutorial videos are also available.

How do I add a Web Map Service (WMS) to TNM Viewer?

The WMS can be added with the following procedures: 1) Click the Add Data tool in the Advanced tab toolbar to open a dialog box. 2) Click the WMS button on the left side of the Add Data dialog box. 3) Enter a WMS URL. 4) Click the Add Data button. 5) Expand the layer that has been added under the Overlays pane in the User Added Content panel. 6)...

How can I submit a question or report issues regarding The National Map products and services?

Submit questions or report issues to The National Map service desk at: tnm_help@usgs.gov
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Date published: October 23, 2019

USGS Digital Elevation Models (DEM) Switching to New Distribution Format

In support of ongoing efforts to provide efficient, cloud ready, open data formats, the U.S. Geological Survey National Geospatial Program is announcing plans to migrate its 3D Elevation Program (3DEP) Digital Elevation Models (DEM) to a new data delivery format called Cloud Optimized Geotiff (COG) during the first half of fiscal year 2020.

Date published: February 7, 2019

USGS 3DEP Lidar Point Cloud Now Available as Amazon Public Dataset

The USGS 3D Elevation Program (3DEP) is excited to announce the availability of a new way to access and process lidar point cloud data from the 3DEP repository.

Date published: October 30, 2018

USGS Topo Base Map Refreshed and Other Updates

The “USGS Topo Base Map” service named “USGS Topo” has been refreshed with new data and design changes. In addition, several of the “Data Availability”, or “Data Index” services have new cloud hosted URLs.

Date published: August 8, 2018

New Elevation Map Service Available From the USGS 3D Elevation Program

The USGS 3D Elevation Program (3DEP) announces the availability of a new dynamic map service.

Date published: June 26, 2018

The 3D Elevation Program Distributing Lidar Data in LAZ Format

In support of ongoing efforts to provide efficient, cloud ready, open data formats for the use of lidar data, the USGS National Geospatial Program and its associated 3D Elevation Program is transitioning all of its lidar data distribution files to LAZ format by September 30, 2018.

Date published: May 23, 2018

Keeping Current with Map Services Made Easier

The National Map provides a new Simple Notification Service and has new URLs for some of its thematic cartographic map services.

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November 13, 2017

Lesson 3b: The National Map Viewer Tool Functionality

Lesson 3b: The National Map Viewer Tool Functionality: Legend, Measure, Elevation Profile, and Spot Elevations. In this lesson, we will provide the user with a demonstration of functionality and capabilities of tools in The National Map Viewer.

Please note that some of our URLs in the video have changed. All URLs beginning with 'viewer.nationalmap.gov/...' have been

November 13, 2017

Lesson 3a: The National Map Viewer Interface and Data Content

Lesson 3a: The National Map Viewer Interface and Data Content. In this lesson, we will provide the user with an overview and demonstration of the interface and data content of The National Map Viewer.

Please note that some of our URLs in the video have changed. All URLs beginning with 'viewer.nationalmap.gov/...' have been updated to 'apps.nationalmap.gov/...'.

October 28, 2015

Using USGS The National Map Data on Mobile Devices

Lesson 6b: Using USGS The National Map Data on Mobile Devices - This video demonstrates several mobile applications that utilize USGS The National Map Data, as well as the Mobile Atlas Creator.

Please note that some of our URLs in the video have changed. All URLs beginning with 'viewer.nationalmap.gov/...' have been updated to 'apps.nationalmap.gov/...'. These URLs

October 13, 2015

Downloading Data with The National Map Download Client

Lesson 4b: Downloading Data with The National Map Download Client - This video discusses the process of using The National Map Download Client to download data.

Please note that some of our URLs in the video have changed. All URLs beginning with 'viewer.nationalmap.gov/...' have been updated to 'apps.nationalmap.gov/...'. These URLs should reroute automatically, but

October 13, 2015

Downloading Maps with The National Map Download Client

Lesson 4c: Downloading Maps with The National Map Download Client - This video discusses the process of using The National Map Download Client to download maps.

Please note that some of our URLs in the video have changed. All URLs beginning with 'viewer.nationalmap.gov/...' have been updated to 'apps.nationalmap.gov/...'. These URLs should reroute automatically, but

October 4, 2015

Using The National Map Download Client

Lesson 4a: Using The National Map Download Client - This video provides a brief introduction to using The National Map Download Client interface.

Please note that some of our URLs in the video have changed. All URLs beginning with 'viewer.nationalmap.gov/...' have been updated to 'apps.nationalmap.gov/...'. These URLs should reroute automatically, but if you have an

USGS
May 12, 2009

What is the National Map?

Listen to hear the answer.