Mapping, Remote Sensing, and Geospatial Data

Where can I find a list of URLs for The National Map services?

A complete list of service URLs can be found at The National Map-Service Endpoints website, which contains available REST, WMS, WMTS (cached base maps only), WFS, WCS, and other service links.

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AK Mount McKinley A-3 US Topo (Browse Image for Story Map)

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...

Chesapeake Bay 2014 Landsat imagery

What are the base map services (or URLs) used in The National Map?

The National Map offers a series of composite base maps that combine layers into tile cache services with the cartographic richness of multiple data sources. The following base maps are available: USGS Topo - combines the most current data (boundaries, geographic names, transportation, elevation, hydrography, land cover, and other themes) that...

Image: USGS Map Editor at Work

Why am I having problems adding ArcGIS REST services to TNM viewer?

The following are common problems and solutions when adding ArcGIS REST services: Are you ending the URL in ".../ArcGIS/rest/services"? For example, the URL should look like https://services.nationalmap.gov/arcgis/rest/services with no space or "/" after ".../ArcGIS/rest/services". Are you trying to add specific layers instead of just REST...

The National Map Viewer Interface

How can I add or mash up services into TNM Viewer?

You can add or mash up ArcGIS Server REST service, KML data file or GeoRSS, WMS, or WMTS with the following procedures: 1) Click on the Advanced Tab toolbar in the middle of the map display. 2) Click on the Add Data tool (green circle with a white + icon). Another method is to add the complete REST or WMS Service URL into the Search window, and...

The National Map Viewer Basic Image

How do I use the Search window in TNM viewer to add WMS or REST services?

If using a WMS, enter your complete service URL into the Search window and append '?request=GetCapabilities&service=WMS&version=1.1.1' at the end. As an example, enter https://services.nationalmap.gov/arcgis/services/govunits/MapServer/WMSServer?request=GetCapabilities&service=WMS&version=1.1.1 If using an ArcGIS Server REST...

The National Map Viewer – another way to download and use US Topo quadrangles and historical map scans

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)...

usgs_national_center_building

How often are boundaries, structures, and transportation products and services updated in the National Map?

Since the USGS obtains most boundaries, structures, and transportation data from external sources, the frequency of updates depends on the release schedule of the source products. Boundaries - updates are variable. Structures - data content for map services is targeted for quarterly refresh cycles, while updated products are immediately available...

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3D model of Mount Hood, Oregon

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.

Attribution: Core Science Systems, National Geospatial Program

Screen shot of elevation aspect map rendered in the 3DEP Demonstration Elevation Viewer

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.

Attribution: Core Science Systems, National Geospatial Program

Screenshot of the National Map and associated map layers with new URLs

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.

Attribution: Core Science Systems, National Geospatial Program