USGS Multimedia Gallery
Title: Map Maker - Hydrologic Units
The National Atlas offered the Federal government's first on-line interactive Map Maker in 1997. A regional map of watersheds in the mid-Atlantic region is shown.
Photographer: National Atlas of the United States , U.S. Geological Survey
Usage: This image is public domain/of free use unless otherwise stated. Please refer to the USGS Copyright section for how to credit the photo.
Use the National Atlas Map Maker to get this image.
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