Do you have a 3D map?

It might be time to get one.  All 3DEP products are available free of charge and without use restrictions. Visit our website to download 3DEP products.  3DEP products and services consist of standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service, and bulk point query service.

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Elevation FAQs

3DEP Products and Services

TNM Elevation

Elevation Video

TNM News & Events

Using TNM Web Services in ArcMap

Have you kissed a frog lately?

First you may want to make sure it is not a toad. Toads have a poison gland behind their eyes with a chubby body and shorter legs. Amphibians are ecologically important for several reasons. They are critical predators of invertebrates, helping to stabilize insect populations, and they serve as prey to other animals, such as birds. Amphibians are also indicator species; that is, they are sensitive to specific environmental factors and their fate can help predict the health of the ecosystem. Scientists are only beginning to realize the potential amphibians have for providing potentially lifesaving medicines to fight infections.


Learn More:

Amphibian FAQs

Frog and Toad Calls

National Amphibian Atlas

Amphibian Conservation & the Wetlands Reserve Program

North American Amphibian Monitoring Program

ANURA- Frogs and Toads

Does that reindeer look sick?

Maybe, but, the reindeer doesn’t have Chronic Wasting Disease (CWD).  CWD is a transmissible spongiform encephalopathy that currently affects black-tail deer, white-tail deer, mule deer, moose and elk. It causes a spongy degeneration in the brain and spinal cord with a long incubation period ranging between 18 months and 8 years.

Learn More:

Chronic Wasting Disease FAQs

Distribution of CWD in North America

National Wildlife Health Center

CWD/Prion News

CWD Positive Tissue Bank

Do you have an ocean view?

More than half of our Nation's population lives within 50 miles of the coast, along productive estuaries and extensive coastlines of the Gulf of Mexico, the extensive Alaska coastline, the Atlantic and Pacific Oceans, and the Caribbean Sea. USGS works with many and varied partners to ensure that our Nation has the information it needs to understand, restore and protect healthy coastal and ocean resources and the communities who depend on them.

Learn More :

Oceans FAQs

Coastal Change Hazards Portal

Coastal and Marine Geology Program

Welcome to USGS iCoast!

Northern Alaska Coastal Erosion Threatens Habitat and Infrastructure

Follow us on twitter @USGSCoastChange

Do you have any old maps?

Yes we do. Historic maps are snapshots of the nation's physical and cultural features at a particular time. In 2011, USGS released high-resolution scans of more than 178,000 historical topographic maps of the United States. GeoPDF® versions of our historic map collection can be downloaded free of charge at The USGS Store, The National Map Viewer, or Geonames, a text query application.


Learn More:

Historical Topographic Maps FAQs

Historical Maps Go Digital

Find A Map!

The National Map

USGS Library-Special Collections

USGS Historical Topographic Map Explorer