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The National Map provides access to various geographic datasets and visualization services.

The TNM Download Client is built on modern web technologies and features a simplified approach to downloading products from The National Map.

An application enabling the dynamic display of US Digital Elevation Models (DEMs) that are published by USGS on The National Map. The application is a dynamic display of different renderings of the data including contours, multiple hillshade maps, slope, and aspect.

Web site created using create-react-app. A color visualization of Slope surface generated dynamically from the elevation layer, where flat surfaces are gray, shallow slopes are yellow and steep slopes are orange.

Lidar Explorer is a map viewer for downloading and viewing USGS 3DEP lidar data.

Spot Elevation - Returns an elevation in international feet or meters for a specific latitude/longitude (NAD 1983) point from the USGS 3DEP 1/3 arc-second layer. If unable to find data at the requested point, this tool returns -1000000.

The National Map - Elevation Point Query Service. The Elevation Point Query Service returns the elevation in international feet or meters for a specific latitude/longitude (NAD 1983) point from the USGS Elevation Service hosted at the NGTOC. Input parameters: x (longitude), y (latitude), units (Feet, Meters), output (XML, JSON).Latitude and longitude must …

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