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Map Layer Info

     
 
One Million-Scale Streams of the United States

What this map layer shows:

Major streams of the United States at a scale of 1:1,000,000 as of 2014.
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Background Information
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The U.S. Geological Survey collects information on water features to support the production of base maps for the United States. Among the many water features it maps are streams and rivers, waterbodies, wetlands, dams, and streamflow gaging stations.

The One Million-Scale Streams map layer shows the major streams and rivers of the United States, Puerto Rico, and the U.S. Virgin Islands that can be represented at a map scale of 1:1,000,000 (1 inch on a map at that scale equals about 15.8 miles on the land surface). If you download this map layer, you will also want to download One Million-Scale Waterbodies and Wetlands of the United States as of 2014 to complete the network of surface waters. The National Atlas also produced a map layer of Streams and Waterbodies as of 2005 at a scale of 1:2,000,000. Some small features cannot be portrayed at these scales. Descriptive information includes the feature name and the type of water feature represented.

This map layer was produced by the National Atlas of the United States. It is part of our collection of fundamental digital cartographic data known as 1. This collection includes base map data in vector format at 1:1,000,000-scale and in raster format at 100 meter resolution. Read more about the 1. A Global Map edition of this map layer is also available.

In cooperation with national mapping programs in Canada and Mexico, we also produce a map layer of surface waters (hydrography) across North America at a scale of 1:10,000,000.