Datasets > Point data > United States > 2005-2009

Major Dams: United States and Territories, 2006

United States. Bureau of Transportation Statistics · 2006 Full Details

Full Details

Title
Major Dams: United States and Territories, 2006
Description
This point shapefile depicts major dams in 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. In the online National Atlas of the United States Map Maker, at scales smaller than 1:4,850,000 the data is thinned for display purposes. For scales between 1: 4,850,000 and 1:22,000,000, dams are only shown if they have a height of 500 feet or more, or a normal storage capacity of 50,000 acre-feet or more, or a maximum storage capacity of 250,000 acre-feet or more (1280 dams). At scales smaller than 1:22,000,000, dams are only shown if they have a height of 5,000 feet or more, or a normal storage capacity of 500,000 acre-feet or more, or a maximum storage capacity of 2,500,000 acre-feet or more (290 dams). Data of 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, is from the United States Army Corps of Engineers National Inventory of Dams and was compiled in 2006. This layer is part of the 2014 National Transportation Atlas Database., The National Transportation Atlas Databases 2014 (NTAD2014) is a set of nationwide geographic datasets of transportation facilities, transportation networks, associated infrastructure, and other political and administrative entities. These datasets include spatial information for transportation modal networks and intermodal terminals, as well as the re¬lated attribute information for these features. This data supports research, analysis, and decision-making across all transportation modes. It is most useful at the national level, but has major applications at regional, state and local scales throughout the transportation community. The data used to compile NTAD2014 was provided by our partners within the United States Department of Transportation (USDOT) and by other agencies throughout the United States Federal Government. These contributors are the actual data stewards and are ultimately responsible for the maintenance and accuracy of their data. This data is intended for geographic display and analysis at the national level and for large regional areas. The data should be displayed and analyzed at scales appropriate for 1:2,000,000 scale data. No responsibility is assumed by the National Atlas of the United States in the use of these data.
Creator
Rawson, Peg
Publisher
United States. Bureau of Transportation Statistics
Subject
Dams, Reservoirs, Hydrography, Inland Waters, Location, Utilities and Communication
Temporal Coverage
2006
Date Issued
2014
Rights
This item is in the public domain. There are no restrictions on use.
Rights Holder
This work is in the Public Domain, meaning that it is not subject to copyright.
Access Rights
Public
Format
Shapefile
Language
English
Date Added
October 01, 2025

Location

Cite and Reference

  • Citation
    Rawson, Peg (2014). Major Dams: United States and Territories, 2006. United States. Bureau of Transportation Statistics. (dataset)
  • BTAA Geoportal Link

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