Major Dams of the United States, 2002-2004

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Abstract/Contents

Abstract: This point shapefile 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. This layer is part of the 1997-2014 edition of the National Atlas of the United States.
Purpose: These data are 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.

Type of resource	cartographic, software, multimedia
Form	Shapefile
Extent	0.217
Publisher	Geological Survey (U.S.)
Publication date	2006
Language	English
Digital origin	born digital
Map data	1:1000000Scale not given. ; EPSG::4269 W 162°52ʹ40ʺ--W 66°54ʺ/N 68°4ʹ10ʺ--N 18°1ʹ2ʺ, Scale not given ; EPSG::4326

Creator	Geological Survey (U.S.)

Subject	Dams
Subject	United States
Subject	Alaska
Subject	Alabama
Subject	Arizona
Subject	Arkansas
Subject	Colorado
Subject	Connecticut
Subject	Delaware
Subject	Florida
Subject	Georgia
Subject	Hawaii
Subject	Idaho
Subject	Illinois
Subject	Indiana
Subject	Iowa
Subject	Kansas
Subject	Kentucky
Subject	Louisiana
Subject	Maine
Subject	Maryland
Subject	Massachusetts
Subject	Michigan
Subject	Minnesota
Subject	Mississippi
Subject	Missouri
Subject	Montana
Subject	Nebraska
Subject	Nevada
Subject	New Hampshire
Subject	New Jersey
Subject	New Mexico
Subject	New York (State)
Subject	North Carolina
Subject	North Dakota
Subject	Ohio
Subject	Oklahoma
Subject	Oregon
Subject	Pennsylvania
Subject	Rhode Island
Subject	South Carolina
Subject	South Dakota
Subject	Tennessee
Subject	Texas
Subject	Utah
Subject	Vermont
Subject	Virginia
Subject	Washington (D.C.)
Subject	Washington (State)
Subject	West Virginia
Subject	Wisconsin
Subject	Wyoming
Subject	Puerto Rico
Subject	United States Virgin Islands
Subject	2002-2004
Subject	Structure
Subject	Inland Waters
Genre	Geospatial data
Genre	Cartographic dataset

Supplemental information	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 5000 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). ; {"gdaId" : 6065730}
WGS84 Cartographics	This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
Location	https://purl.stanford.edu/sn895dj5621

Use and reproduction: This item is in the public domain. There are no restrictions on use.
Copyright: This work is in the Public Domain, meaning that it is not subject to copyright.

Preferred citation: U.S. Geological Survey. (2006). Major Dams of the United States, 2002-2004. USGS. Available at: http://purl.stanford.edu/sn895dj5621.

National atlas of the United States of America, 1997-2014

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