This update to the online Topographic Base Map from The National Map was made public earlier this month and continues to be available to support many applications. Explore it in the National Map Viewer here . 

Sources/Usage: Public Domain. View Media Details

Some of the many enhancements to the USGS Topo Base Map base map include:

• Refreshed with latest large-scale data
• Added Wild and Scenic Rivers
• Improved shaded relief, using September 2018 “USGSShadedRelief” cache
• Improved hydrography symbology from the National Hydrography Dataset (NHD)
• Added small-scale data from USGS Ecosystems
• Added more landform labels

The “USGS Topo Base Map” service is built from downloadable, publicly available datasets from The National Map. The service is available as both an Esri REST service enabling its use in ArcGIS Desktop and ArcGIS Online, and as a Web Map Tile Service (WMTS) for inclusion into many other interactive mapping applications. Service URL.

Summary of changes to service endpoints

New cloud-based index zone web-based map service endpoints:

New Cloud Endpoint

• US Topo Availability Index: https://index.nationalmap.gov/arcgis/rest/services/USTopoAvailability/MapServer
• 3DEP Elevation Data Availability Index: https://index.nationalmap.gov/arcgis/rest/services/3DEPElevationIndex/MapServer

Former Internal Endpoints Planned for Retirement

• US Topo Availability Index: https://services.nationalmap.gov/arcgis/rest/services/UsTopoAvailabilityMapServer
• 3DEP Elevation Data Availability Index:: https://services.nationalmap.gov/arcgis/rest/services/3DEPElevationIndex/MapServer

USGS will provide a transition period through November 30, 2018. The previous endpoints from USGS servers will continue to be publicly accessible during this transition period. Users will need to use the new Cloud service endpoints to access these dynamic services after the transition period ends. In addition, users consuming the services from the previous endpoints may need to update application configurations for display of the desired layers.

 A full list of Web based map services is available from The National Map. Developers using USGS National Map web map services now have an easy way to stay in touch with any upcoming changes to our map services through subscribing to a new  National Map Simple Notification Service (SNS) https://apps.nationalmap.gov/notifications/.

As one of the cornerstones of the U.S. Geological Survey's (USGS) National Geospatial Program, The National Map is a collaborative effort among the USGS and other Federal, State, and local partners to improve and deliver topographic information for the Nation. It has many uses ranging from recreation to scientific analysis to emergency response.

For any questions, comments, or concerns regarding this update, contact tnm_help@usgs.gov.