Entry_ID: (required) Entry_Title: Major Dams of the United States Group: Data_Set_Citation Originator(s): National Atlas of the United States Title: Major Dams of the United States Publication_Date: 200603 Publication_Place: Reston, VA Publisher: National Atlas of the United States URL: End_Group Keyword: Inland Waters Group: Temporal_Coverage Start_date: 200202 Stop_date: 200412 End_Group Data_Set_Progress: Complete Group: Spatial_Coverage Southernmost_Latitude: 18 Northernmost_Latitude: 69 Westernmost_Longitude: -163 Easternmost_Longitude: -66 End_Group Location: USA Location: Alaska Location: Alabama Location: Arkansas Location: Arizona Location: California Location: Colorado Location: Connecticut Location: Delaware Location: Florida Location: Georgia Location: Hawaii Location: Idaho Location: Iowa Location: Illinois Location: Indiana Location: Kansas Location: Kentucky Location: Louisiana Location: Maine Location: Massachusetts Location: Maryland Location: Michigan Location: Minnesota Location: Missouri Location: Mississippi Location: Montana Location: North Carolina Location: North Dakota Location: Nebraska Location: New Hampshire Location: New Jersey Location: New Mexico Location: Nevada Location: New York Location: Ohio Location: Oklahoma Location: Oregon Location: Pennsylvania Location: Rhode Island Location: South Carolina Location: South Dakota Location: Tennessee Location: Texas Location: United States Location: Utah Location: Vermont Location: Virginia Location: Wisconsin Location: Washington Location: West Virginia Location: Wyoming Location: Puerto Rico Location: Virgin Islands Location: U.S. Virgin Islands Group: Data_Resolution Latitude_Resolution: 0.000278 Longitude_Resolution: 0.000278 End_Group Access_Constraints: None Use_Constraints: None. Acknowledgment of the National Atlas of the United States of America would be appreciated in products derived from these data. Originating_Center: (required) Group: Data_Center Data_Center_Name: Earth Science Information Center, U.S. Geological Survey Group: Data_Center_Contact Last_name: Earth Science Information Center, U.S. Geological Survey First_name: N/A Phone: 1-888-ASK-USGS (1-888-275-8747) Phone: 703-648-5920 Group: Address 507 National Center Reston, VA 20192 End_Group End_Group End_Group Storage_Medium: ESRI shapefile format Group: Distribution Distribution_Media: online Distribution_Format : ESRI Shapefile Fees: There is no charge for the map layer. End_Group Group: Distribution Distribution_Media: online Distribution_Format : SDTS Fees: There is no charge for the map layer. End_Group Group: Reference End_Group Group: Summary 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. 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. 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). End_Group Group: Related_URL URL_Type: URL: Group: Description Originator: U.S. Army Corps of Engineers in cooperation with FEMA's National Dam Safety Program Publication_Date: 20050209 Title: National Inventory of Dams, Water Control Infrastructure Publication_Information: Publication_Place: Alexandria, VA Publisher: U.S. Army Corps of Engineers Online_Linkage: End_Group End_Group Group: Related_URL URL_Type: URL: Group: Description Originator: National Atlas of the United States Publication_Date: 200506 Title: County Boundaries of the United States, 2001 Publication_Information: Publication_Place: Reston, VA Publisher: National Atlas of the United States Online_Linkage: End_Group End_Group Group: DIF_Author Last_name: Rawson First_name: Peg Email: atlasmail@usgs.gov Phone: 703-648-4183 Group: Address 12201 Sunrise Valley Drive Reston, VA 20192 End_Group End_Group DIF_Revision_Date: 20060321 Science_Review_Date: