The National Map is an online, interactive map service published by the United States Geological Survey (USGS). Users can create and print high-resolution shaded relief maps of a local area, a state, or the entire U.S. A...

In this activity, students will become familiar with topographic maps and their uses, as well as developing an awareness of their local surroundings in terms of geographic and geological features. The activity is...

In this activity, students will learn the more advanced mapping skills of calculating back azimuths and triangulation. Using a local 7.5-minute series map, the teacher will select a starting point and an obstacle, have...

This tutorial is designed to expose users to basic functions in HEC-GeoRAS for pre- and/or post-processing of GIS data and HEC-RAS results for flood inundation mapping using ArcGIS. It is expected that you are familiar...

This interactive viewer provides access to satellite imagery for virtually any point on the Earth. Users can select a satellite and sensor and either type in latitude and longitude or click on a point on the index map....