Dams (National)

Metadata Updated: November 13, 2020

This map layer portrays major dams of the United States, including Puerto Rico and the U.S. Virgin Islands. The map layer was created by extracting dams 50 feet or more in height, or with a normal storage capacity of 5,000 acre-feet or more, or with a maximum storage capacity of 25,000 acre-feet or more, from the 79,777 dams in the U.S. Army Corps of Engineers National Inventory of Dams. This is a replacement for the April 1994 map layer.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Date November 8, 2016
Metadata Created Date November 10, 2020
Metadata Updated Date November 13, 2020
Reference Date(s) January 1, 2016 (publication)
Frequency Of Update

Metadata Source

Harvested from National Transportation Atlas Database (NTAD) Metadata

Additional Metadata

Resource Type Dataset
Metadata Date November 8, 2016
Metadata Created Date November 10, 2020
Metadata Updated Date November 13, 2020
Reference Date(s) January 1, 2016 (publication)
Responsible Party Office of the Assistant Secretary for Research and Technology/Bureau of Transportation Statistics (Point of Contact); National Atlas of the United States (Point of Contact)
Contact Email
Guid
Access Constraints Use Constraints: None, Access Constraints: None
Bbox East Long -66.014998
Bbox North Lat 68.069399
Bbox South Lat 18.017303
Bbox West Long -162.877839
Coupled Resource
Frequency Of Update
Licence See access and use constraints information. See access and use constraints information.
Metadata Language eng; USA
Metadata Type geospatial
Progress
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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