Metadata: Identification_Information: Citation: Citation_Information: Originator: National Atlas of the United States Publication_Date: 200603 Title: Major Dams of the United States Publication_Information: Publication_Place: Reston, VA Publisher: National Atlas of the United States Online_Linkage: Description: Abstract: 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. 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. 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). Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 200202 Ending_Date: 200412 Currentness_Reference: Dates of source material Status: Progress: Complete Maintenance_and_Update_Frequency: Irregular Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -163 East_Bounding_Coordinate: -66 North_Bounding_Coordinate: 69 South_Bounding_Coordinate: 18 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: Inland Waters Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Hydrography Theme_Keyword: Dams Theme_Keyword: Dam safety Theme_Keyword: Reservoirs Theme_Keyword: Reservoir capacity Theme_Keyword: Reservoir storage Theme_Keyword: Surface water Theme: Theme_Keyword_Thesaurus: Tri-Service Spatial Data Standard Theme_Keyword: Improvement Place: Place_Keyword_Thesaurus: None Place_Keyword: USA Place_Keyword: Alaska Place_Keyword: Alabama Place_Keyword: Arkansas Place_Keyword: Arizona Place_Keyword: California Place_Keyword: Colorado Place_Keyword: Connecticut Place_Keyword: Delaware Place_Keyword: Florida Place_Keyword: Georgia Place_Keyword: Hawaii Place_Keyword: Idaho Place_Keyword: Iowa Place_Keyword: Illinois Place_Keyword: Indiana Place_Keyword: Kansas Place_Keyword: Kentucky Place_Keyword: Louisiana Place_Keyword: Maine Place_Keyword: Massachusetts Place_Keyword: Maryland Place_Keyword: Michigan Place_Keyword: Minnesota Place_Keyword: Missouri Place_Keyword: Mississippi Place_Keyword: Montana Place_Keyword: North Carolina Place_Keyword: North Dakota Place_Keyword: Nebraska Place_Keyword: New Hampshire Place_Keyword: New Jersey Place_Keyword: New Mexico Place_Keyword: Nevada Place_Keyword: New York Place_Keyword: Ohio Place_Keyword: Oklahoma Place_Keyword: Oregon Place_Keyword: Pennsylvania Place_Keyword: Rhode Island Place_Keyword: South Carolina Place_Keyword: South Dakota Place_Keyword: Tennessee Place_Keyword: Texas Place_Keyword: United States Place_Keyword: Utah Place_Keyword: Vermont Place_Keyword: Virginia Place_Keyword: Wisconsin Place_Keyword: Washington Place_Keyword: West Virginia Place_Keyword: Wyoming Place_Keyword: Puerto Rico Place_Keyword: Virgin Islands Place_Keyword: U.S. Virgin Islands 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. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peg Rawson Contact_Organization: National Atlas of the United States Contact_Address: Address_Type: Mailing address Address: 12201 Sunrise Valley Drive Address: MS-561 City: Reston State_or_Province: VA Postal_Code: 20192 Contact_Voice_Telephone: 703-648-4183 Contact_Electronic_Mail_Address: atlasmail@usgs.gov Native_Data_Set_Environment: ESRI shapefile format Data_Quality_Information: Logical_Consistency_Report: None Completeness_Report: This file contains those dams from the National Inventory of Dams with a height of 50 feet or more, or with a normal storage capacity of 5000 acre- feet or more, or with a maximum storage capacity of 25,000 acre-feet or more. Dams outside of the 50 States, Puerto Rico, and the U.S. Virgin Islands are not included, nor are dams for which there is no positional information in the National Inventory of Dams. Lineage: Source_Information: Source_Citation: Citation_Information: 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: Type_of_Source_Media: Online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 200202 Ending_Date: 200412 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: NID Source_Contribution: Spatial and attribute information Source_Information: Source_Citation: Citation_Information: 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: Type_of_Source_Media: Online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1972 Ending_Date: 2001 Source_Currentness_Reference: Ground condition Source_Citation_Abbreviation: Atlas-Cnty Source_Contribution: Attribute information Process_Step: Process_Description: The full National Inventory of Dams (NID) was downloaded from the NID web site in shapefile format and loaded into ArcView. Using an ArcView query, major dams were selected and placed in a new shapefile. Major dams were defined as dams with a height of 50 feet or more, 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. (The International Committee on Large Dams considers dams over 50 feet to be large dams. The USGS Water Resources Division considers large reservoirs to be those 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.) One dam in Guam and one dam in the Trust Territories were deleted. Eighty-nine dams without valid latitude/longitude coordinates were also deleted. Because the text fields contained entries in a mix of formats, some in all capitals and some in capitals and lower-case, all text entries were changed to all capitals. Some dams were missing county attribute values. The appropriate values were determined by comparing the dam locations to the Atlas-Cnty file. One dam was deleted because it was described as being in Maryland but had coordinates that placed it in Virginia. Invalid values for owner type (197 records), dam type (10 records), and year completed (3 records) were changed to blanks to indicate that the values are unknown. The attribute Purposes contained some invalid codes; these were removed but valid codes and duplicate codes were retained. Thirty-nine records contained a value of -9.9 for Nid_height. The appropriate value for each record was determined by looking at the dam height, structural height, and hydraulic height values in the source data. One invalid value for hazard was changed to U to indicate that the hazard potential is unknown. The shape file was converted to an ArcInfo coverage and then converted to NAD 83 for display purposes. The result was then converted back to shapefile format. Source_Used_Citation_Abbreviation: NID05 Source_Used_Citation_Abbreviation: Atlas-Cnty Process_Date: 200512 Process_Step: Process_Description: An attribute was added to the shapefile to allow for symbolization in the National Atlas Map Maker. Process_Date: 20060320 Spatial_Data_Organization_Information: Indirect_Spatial_Reference: U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the Outlying Areas of the United States, and Associated Areas (FIPS 5-2): Washington, DC, National Institute of Standards and Technology. U.S. Department of Commerce, 1990, Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas (FIPS 6-4): Washington, DC, National Institute of Standards and Technology. Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 8121 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000278 Longitude_Resolution: 0.000278 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS1980 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Dam Entity_Type_Definition: Any artificial barrier, including appurtenant works, which impounds or diverts water, and which (1) is twenty-five feet or more in height from the natural bed of the stream or watercourse measured at the downstream toe of the barrier, or from the lowest elevation of the outside limit of the barrier, if it is not across a stream channel or watercourse, to the maximum water storage elevation or (2) has an impounding capacity at maximum water storage elevation of fifty acre-feet or more. This Act does not apply to any such barrier which is not in excess of six feet in height, regardless of storage capacity or which has a storage capacity at maximum water storage elevation not in excess of fifteen acre-feet, regardless of height, unless such barrier, due to its location or other physical characteristic, is likely to pose a significant threat to human life or property in the event of its failure. Entity_Type_Definition_Source: Dam Safety Act of 1972 (P.L. 92-367) and Dam Safety Act of 1986 (P.L. 99-662) Attribute: Attribute_Label: Shape Attribute_Definition: The representation of the entity in the data. Attribute_Definition_Source: National Atlas of the United States Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Point Enumerated_Domain_Value_Definition: 0-dimensional element Enumerated_Domain_Value_Definition_Source: ESRI GIS software Attribute: Attribute_Label: Dams00x020 Attribute_Definition: Internal feature number. Attribute_Definition_Source: National Atlas of the United States Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 8121 Attribute: Attribute_Label: Dam_name Attribute_Definition: The official name of the dam. For dams that do not have an official name, the popular name is used. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Unrepresentable_Domain: There is no predefined set of valid dam names. The attribute contains the official name of the dam, or the popular name if there is no official name. Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: The name of the dam is not provided in the National Inventory of Dams. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Attribute: Attribute_Label: Other_name Attribute_Definition: The reservoir name or names in common use other than the official name of the dam. Names are separated with semicolons. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Unrepresentable_Domain: There is no predefined set of reservoir or common use names. Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: There are no other names for the dam, or the other names are unknown. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Attribute: Attribute_Label: Nidid Attribute_Definition: The official National Inventory of Dams identification number for the dam, known formerly as the National Id. The first two characters of the identity are the State two letter abbreviation, based on the location of the dam. The last five characters of the identity are a unique number (AB#####). Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: AK00001 Range_Domain_Maximum: WY83004 Attribute: Attribute_Label: Longitude Attribute_Definition: Dam longitude as a single value, in decimal degrees. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -162.87781 Range_Domain_Maximum: -66.015000 Attribute: Attribute_Label: Latitude Attribute_Definition: Dam latitude as a single value, in decimal degrees. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 18.017300 Range_Domain_Maximum: 68.069400 Attribute: Attribute_Label: County Attribute_Definition: The name of the county in which the dam is located. If the dam falls in more than one county, the names may be separated by a slash, a comma, or a semicolon. Attribute_Definition_Source: National Atlas of the United States Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: The name of the county is not provided in the National Inventory of Dams. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Codeset_Domain: Codeset_Name: Counties and Equivalent Areas of the United States, Its Possessions, and Associated Areas, FIPS PUB 6-4. Codeset_Source: U.S. Department of Commerce Attribute: Attribute_Label: River Attribute_Definition: The official name of the river or stream on which the dam is built. If the stream is unnamed, it is identified as a tributary ("TR") to a named river. If the dam is located offstream, the name of the river or stream is entered plus "-OS" or "OFFSTREAM". Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: The name of the river is not provided in the National Inventory of Dams. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Unrepresentable_Domain: There is no predefined set of valid river or stream names. Attribute: Attribute_Label: City Attribute_Definition: The name of the nearest city, town, or village that is most likely to be affected by floods resulting from the failure of the dam. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: The name of the city is not provided in the National Inventory of Dams. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Unrepresentable_Domain: There is no predefined set of valid city names. Attribute: Attribute_Label: Own_name Attribute_Definition: The name of the owner of the dam. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: The name of the owner is not provided in the National Inventory of Dams. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Unrepresentable_Domain: There is no predefined set of valid owner names. Attribute: Attribute_Label: Own_type Attribute_Definition: A term indicating owner type. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: The owner type is unknown. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: F Enumerated_Domain_Value_Definition: The dam is owned by a Federal agency. Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: L Enumerated_Domain_Value_Definition: The dam is owned by a County, City, Regional, or other similar local government or government agency. Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: P Enumerated_Domain_Value_Definition: The dam is owned by an individual or individuals, or by a private company. Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: The dam is owned by a State or by a State agency. Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: U Enumerated_Domain_Value_Definition: The dam is owned by a public utility. Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Attribute: Attribute_Label: Dam_type Attribute_Definition: A code or codes indicating the dam type, in order of importance. Codes are concatenated if the dam is a combination of several types. For example, CNCB would indicate a concrete buttress type dam. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: The dam type is unknown. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: CB Enumerated_Domain_Value_Definition: Buttress Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: CN Enumerated_Domain_Value_Definition: Concrete Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: ER Enumerated_Domain_Value_Definition: Rockfill Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: MS Enumerated_Domain_Value_Definition: Masonry Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: MV (or MultiArch) Enumerated_Domain_Value_Definition: Multi-arch Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: OT Enumerated_Domain_Value_Definition: Other Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: PG Enumerated_Domain_Value_Definition: Gravity Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: RE Enumerated_Domain_Value_Definition: Earth Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: ST Enumerated_Domain_Value_Definition: Stone Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: TC Enumerated_Domain_Value_Definition: Timber crib Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: VA Enumerated_Domain_Value_Definition: Arch Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Attribute: Attribute_Label: Purposes Attribute_Definition: A code or codes indicating the purposes for which reservoir is used, in order of importance. The codes are concatenated if the dam has multiple purposes. For example, SCR would indicate the primary purposes of Water Supply and Flood Control and Storm Water Management, followed by Recreation. The data may contain words or abbreviations that were used instead of the appropriate codes; these have been retained. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: The purpose of the dam is not provided in the National Inventory of Dams. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: C Enumerated_Domain_Value_Definition: Flood control and storm water management Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: D Enumerated_Domain_Value_Definition: Debris control Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: F Enumerated_Domain_Value_Definition: Fish and wildlife pond Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: H Enumerated_Domain_Value_Definition: Hydroelectric Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: I Enumerated_Domain_Value_Definition: Irrigation Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: N Enumerated_Domain_Value_Definition: Navigation Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: O Enumerated_Domain_Value_Definition: Other Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: P Enumerated_Domain_Value_Definition: Fire protection, stock, or small farm pond Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: R Enumerated_Domain_Value_Definition: Recreation Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: Water supply Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: T Enumerated_Domain_Value_Definition: Tailings Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Attribute: Attribute_Label: Yr_compl Attribute_Definition: The year when the main dam structure was completed. A value of 0 indicates that the year is unknown. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1800 Range_Domain_Maximum: 2003 Attribute: Attribute_Label: Nid_height Attribute_Definition: The maximum of either the dam height (the vertical distance between the lowest point on the crest of the dam and the lowest point in the original streambed), the hydraulic height (the vertical distance between the maximum designed water level and the lowest point in the original streambed), or the structural height (the vertical distance between the lowest point of the excavated foundation and the top of the dam) of the dam. The height is given in feet, to the nearest foot. Attribute_Definition_Source: National Atlas of the United States Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0.00000000000 Enumerated_Domain_Value_Definition: The height is unknown. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Range_Domain: Range_Domain_Minimum: 3.000000000000 Range_Domain_Maximum: 770.00000000000 Attribute: Attribute_Label: Max_stor Attribute_Definition: The maximum storage in acre-feet. Maximum storage is the total storage space in a reservoir below the maximum attainable water surface elevation, including any surcharge storage. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0.00000000000 Enumerated_Domain_Value_Definition: The maximum storage is unknown. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Range_Domain: Range_Domain_Minimum: 1.00000000000 Range_Domain_Maximum: 9700000000.00000000 Attribute: Attribute_Label: Normal_sto Attribute_Definition: The normal storage in acre-feet. Normal storage is the total storage space in a reservoir below the normal retention level, including dead and inactive storage and excluding any flood control surcharge storage. A value of 0 may indicate that the normal storage is unknown or may indicate that the dam is normally dry. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00000000000 Range_Domain_Maximum: 9700000000.00000000 Attribute: Attribute_Label: Surf_area Attribute_Definition: The surface area, in acres, of the impoundment at its normal retention level. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0.00000000000 Enumerated_Domain_Value_Definition: The surface area is unknown. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Range_Domain: Range_Domain_Minimum: 0.01000000000 Range_Domain_Maximum: 20358400.0000000000 Attribute: Attribute_Label: Drain_area Attribute_Definition: The drainage area of the dam in square miles. It is defined as the area that drains to a particular point (in this case, the dam) on a river or stream. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0.00000000000 Enumerated_Domain_Value_Definition: The drainage area is unknown. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Range_Domain: Range_Domain_Minimum: 0.00156250000 Range_Domain_Maximum: 1250000.00000000000 Attribute: Attribute_Label: Hazard Attribute_Definition: A term indicating the potential hazard to the downstream area resulting from failure or mis-operation of the dam or facilities. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: L Enumerated_Domain_Value_Definition: The potential hazard is low. A dam where failure or misoperation results in no probable loss of human life and low economic and/or environmental loss. Losses are principally limited to the owner's property. Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: The potential hazard is significant. A dam where failure or misoperation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. These dams are often located in predominantly rural or agricultural areas but could be located in areas with population and significant infrastructure. Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: H Enumerated_Domain_Value_Definition: The potential hazard is high. A dam where failure or misoperation will probably cause loss of human life. Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Enumerated_Domain: Enumerated_Domain_Value: U Enumerated_Domain_Value_Definition: The potential hazard is unknown. Enumerated_Domain_Value_Definition_Source: U.S. Army Corps of Engineers Attribute: Attribute_Label: State Attribute_Definition: The two letter abbreviation for the State in which the dam is located. Attribute_Definition_Source: U.S. Army Corps of Engineers Attribute_Domain_Values: Codeset_Domain: Codeset_Name: Codes for the Identification of the States, the District of Columbia and the Outlying Areas of the United States, and Associated Areas, FIPS PUB 5-2. Codeset_Source: U.S. Department of Commerce Attribute: Attribute_Label: Symbol Attribute_Definition: A code indicating how the dam is symbolized in the National Atlas Map Maker. The symbol is determined from the primary Purpose code given for the dam, which is the first or only code listed under the attribute Purpose. Where the Purpose attribute contains a word or abbreviation instead of the appropriate code, the first letter of the Purpose value was still used to determine the symbol code. In these cases the symbol may not accurately represent the true primary purpose of the dam. Attribute_Definition_Source: National Atlas of the United States Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: The dam has an unknown purpose. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: C Enumerated_Domain_Value_Definition: The dam is for flood control and storm water management. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: D Enumerated_Domain_Value_Definition: The dam is for debris control. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: F Enumerated_Domain_Value_Definition: The dam contains a fish and wildlife pond. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: H Enumerated_Domain_Value_Definition: The dam is for hydroelectric power. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: I Enumerated_Domain_Value_Definition: The reservoir contained by the dam is for irrigation. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: N Enumerated_Domain_Value_Definition: The dam is for navigation. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: O Enumerated_Domain_Value_Definition: The dam or reservoir contained by the dam has a primary purpose other than flood control and storm water management; debris control; fish and wildlife pond; hydroelectric; irrigation; navigation; fire protection, stock, or small farm pond; recreation; water supply; or tailings Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: P Enumerated_Domain_Value_Definition: The dam contains a fire protection, stock, or small farm pond Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: R Enumerated_Domain_Value_Definition: The reservoir contained by the dam is for recreation. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: The reservoir contained by the dam is for water supply. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Enumerated_Domain: Enumerated_Domain_Value: T Enumerated_Domain_Value_Definition: The dam contains a tailings pond. Enumerated_Domain_Value_Definition_Source: National Atlas of the United States Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Earth Science Information Center, U.S. Geological Survey Contact_Address: Address_Type: Mailing address Address: 507 National Center City: Reston State_or_Province: VA Postal_Code: 20192 Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747) Contact_Voice_Telephone: 703-648-5920 Contact_Instructions: In addition to the address above there are other ESIC offices throughout the country. A full list of these offices is at . Distribution_Liability: Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made by the U.S. Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. No responsibility is assumed by the U.S. Geological Survey in the use of these data. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ESRI Shapefile Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Digital_Form: Digital_Transfer_Information: Format_Name: SDTS Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Fees: There is no charge for the map layer. Metadata_Reference_Information: Metadata_Date: 20060321 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peg Rawson Contact_Organization: National Atlas of the United States Contact_Address: Address_Type: Mailing address Address: 12201 Sunrise Valley Drive Address: MS-561 City: Reston State_or_Province: VA Postal_Code: 20192 Contact_Voice_Telephone: 703-648-4183 Contact_Electronic_Mail_Address: atlasmail@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None