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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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 Services , which contains available REST, WMS, WMTS (cached base maps only), WFS, WCS, and other service links. Learn more: Training videos for The National Map Products and Services The National Map Applications

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 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...

Where can I get metadata for The National Map products and services?

Metadata for The National Map products and services is available through the following sources: In The National Map Viewer , click on the "Layer List" icon above the map, then click on the three dots to the right of the layer and select "Description" in the dropdown menu. Most layers in the Viewer are also available as Download s and/or Services...
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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: July 5, 2017

Finding Yourself Outdoors

Updated USGS digital topographic maps feature more trails and other recreation points of interest

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June 1, 2017

TopoView - A look at version 2.1

A tutorial by USGS scientist and topoView developer Chris Garrity demonstrating how to use topoView version 2.1. TopoView let's you access and download maps free of charge from the USGS's Historical Topographic Map Collection, published between 1884 and 2006. 

Resources:
An Introduction to TopoView (version 1.0)

video thumbnail: Elevation
April 30, 2012

Elevation

The National Elevation Dataset (NED) is the primary elevation data product produced and distributed by the USGS National 3D Elevation Program (3DEP). The NED provides seamless raster elevation data of the conterminous United States, Alaska, Hawaii, and the island territories. The NED is derived from diverse source data sets that are processed to a specification with a

November 18, 2004

PubTalk 11/2004 — From Plane Tables to Pixels

The Revolution in Mapping at the U.S. Geological Survey

by Susan P. Benjamin, Research Geographer

  • Mapping the United States in the 19th century was arduous, dangerous work; flash floods, bears, and bandits were just a few hazards
  • By the mid-20th century, aerial photography, photogrammetry, and stereophoto pairs, allowed