Identification_Information: 
Citation: 
Citation_Information: 
Originator: U.S. Geological Survey 
Publication_Date: 1999 
Title: Major Dams of the United States 
Publication_Information: 
Publication_Place: Reston, Virginia 
Publisher: U.S. Geological Survey 
Description: 
Abstract: 
This data set portrays major dams of the United States, including Puerto Rico and the U.S. Virgin Islands. The data set 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 75,187 dams in the U.S. Army Corps of Engineers National Inventory of Dams. 
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 U.S. Geological Survey in the use of these data. 
Supplemental_Information: 
In the online, interactive National Atlas of the United States, 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 (1173 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 (240 dams). 
Time_Period_of_Content: 
Time_Period_Information: 
Range_of_Dates/Times: 
Beginning_Date: 1995 
Ending_Date: 1996 
Currentness_Reference: publication date 
Status: 
Progress: Complete 
Maintenance_and_Update_Frequency: Irregular 
Spatial_Domain: 
Bounding_Coordinates: 
West_Bounding_Coordinate: -162.928333 
East_Bounding_Coordinate: -66.015000 
North_Bounding_Coordinate: 68.068889 
South_Bounding_Coordinate: 18.018056 
Keywords: 
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 
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: U.S. Geological Survey 
Contact_Address: 
Address_Type: mailing address 
Address: 521 National Center 
City: Reston 
State_or_Province: VA 
Postal_Code: 20192 
Contact_Voice_Telephone: 703-648-4183 
Contact_Electronic_Mail_Address: atlasmail@usgs.gov 
Contact_Instructions: Please contact via electronic mail 
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: 1996 
Title: 
National Inventory of Dams, Water Control Infrastructure 
Publication_Information: 
Publication_Place: Washington, DC 
Publisher: FEMA National Dam Safety Program 
Type_of_Source_Media: CD-ROM 
Source_Time_Period_of_Content: 
Time_Period_Information: 
Range_of_Dates/Times: 
Beginning_Date: 1995 
Ending_Date: 1996 
Source_Currentness_Reference: publication date 
Source_Citation_Abbreviation: NID 
Source_Contribution: spatial and attribute information 
Source_Information: 
Source_Citation: 
Citation_Information: 
Originator: U.S. Geological Survey 
Publication_Date: 1998 
Title: Major Dams of the United States 
Publication_Information: 
Publication_Place: Reston, VA 
Publisher: U.S. Geological Survey 
Type_of_Source_Media: online 
Source_Time_Period_of_Content: 
Time_Period_Information: 
Range_of_Dates/Times: 
Beginning_Date: 1995 
Ending_Date: 1996 
Source_Currentness_Reference: 
publication date of original source material 
Source_Citation_Abbreviation: NatlasDams 
Source_Contribution: spatial and attribute information 
Process_Step: 
Process_Description: 
The dams in this file were selected from the National Inventory of Dams (NID). First, a subset of the attributes contained in the NID was selected based on input from the Army Corps of Engineers. Using an ArcView query, the dams with a height of 50 feet or more were selected, along with the dams with a normal storage capacity of 5,000 acre-feet or more, and those 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.) The resulting data set was converted to an ArcView shape file using the "Convert to Shapefile" command. 
33 dams that fell outside the 50 States were deleted (1 in Guam, 1 in the Trust Territories, and 31 in Puerto Rico), and 78 dams without coordinates were also deleted. Several misspelled county names were corrected, and the entries in the FIPS_cnty (County FIPS) field were cleaned up. For all dams with a valid county name but no County FIPS, the FIPS code was added based on the listed county name. If two county names were given, the FIPS code used was for the first one listed, or for the county in the listed State. Where the county name was invalid or missing, the county was determined by comparing the dam location to the National Atlas counties file. If the dam fell on a State line, the county name and FIPS code used were those appropriate for the listed State. 
The shape file was converted to an Arc/Info coverage and then converted to NAD 83 for display purposes. The result was then converted back to shapefile format. 
Source_Used_Citation_Abbreviation: NID 
Process_Date: 1998 
Source_Produced_Citation_Abbreviation: NatlasDams 
Process_Step: 
Process_Description: 
The dams in Puerto Rico and the U.S. Virgin Islands that met the criteria for large dams were selected from the NID. There were 31 dams in Puerto Rico and none in the U.S. Virgin Islands. The same attributes were selected as were used for NatlasDams. Both the Fips_state and Fips_cnty fields were blank for these dams, so the State FIPS code was entered, and the county FIPS code was entered where appropriate. One invalid county name was corrected by comparing the dam location to the National Atlas counties file. The resulting shapefile was converted to an Arc/Info coverage, converted to NAD83 for display purposes, and merged with the NatlasDams data. The resulting file was then converted back to shapefile format. 
Source_Used_Citation_Abbreviation: NatlasDams 
Source_Used_Citation_Abbreviation: NID 
Process_Date: 1999 



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, D. C., 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, D.C., 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: 7782 



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 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: U.S. Geological Survey 
Attribute_Domain_Values: 
Enumerated_Domain: 
Enumerated_Domain_Value: Point 
Enumerated_Domain_Value_Definition: 
0-dimensional element 
Enumerated_Domain_Value_Definition_Source: 
GIS software 
Attribute: 
Attribute_Label: Area 
Attribute_Definition: 
The size of the shape in coverage units 
Attribute_Definition_Source: U.S. Geological Survey 
Attribute_Domain_Values: 
Range_Domain: 
Range_Domain_Minimum: 0.000 
Range_Domain_Maximum: 0.000 
Attribute: 
Attribute_Label: Perimeter 
Attribute_Definition: 
The perimeter of the shape in coverage units 
Attribute_Definition_Source: U.S. Geological Survey 
Attribute_Domain_Values: 
Range_Domain: 
Range_Domain_Minimum: 0.000 
Range_Domain_Maximum: 0.000 
Attribute: 
Attribute_Label: Dams00x020 
Attribute_Definition: Internal feature number 
Attribute_Definition_Source: U.S. Geological Survey 
Attribute_Domain_Values: 
Range_Domain: 
Range_Domain_Minimum: 1 
Range_Domain_Maximum: 7782 
Attribute: 
Attribute_Label: Dams00x020 
Attribute_Definition: User-assigned feature number 
Attribute_Definition_Source: U.S. Geological Survey 
Attribute_Domain_Values: 
Range_Domain: 
Range_Domain_Minimum: 1 
Range_Domain_Maximum: 7751 
Attribute: 
Attribute_Label: Nid_id 
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: 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. 
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. 
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: Low 
Enumerated_Domain_Value_Definition: 
A dam where failure or mis-operation 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: Significant 
Enumerated_Domain_Value_Definition: 
A dam where failure or mis-operation 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: High 
Enumerated_Domain_Value_Definition: 
A dam where failure or mis-operation will probably cause loss of human life. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Attribute: 
Attribute_Label: State_name 
Attribute_Definition: 
The name of 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: County 
Attribute_Definition: 
The name of the County in which the dam is located. 
Attribute_Definition_Source: U.S. Army Corps of Engineers 
Attribute_Domain_Values: 
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: 
Unrepresentable_Domain: 
There is no predefined set of river or stream names. 
Attribute: 
Attribute_Label: Prm_purpos 
Attribute_Definition: 
A term indicating the primary purpose for which reservoir is used. 
Attribute_Definition_Source: U.S. Army Corps of Engineers 
Attribute_Domain_Values: 
Enumerated_Domain: 
Enumerated_Domain_Value: Irrigation 
Enumerated_Domain_Value_Definition: 
The dam holds water for irrigation. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Hydroelectric 
Enumerated_Domain_Value_Definition: 
The dam holds water used for power generation. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Flood Control 
Enumerated_Domain_Value_Definition: 
The dam holds water in times of high stream flow, to protect downstream areas from flooding. The dam may normally hold a reservoir and also have capacity for flood control, or may hold water only for flood control. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Navigation 
Enumerated_Domain_Value_Definition: 
The dam controls stream flow to allow for navigation, or allows for navigation around an obstacle in a stream. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Water Supply 
Enumerated_Domain_Value_Definition: 
The dam holds water for domestic or commercial use. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Recreation 
Enumerated_Domain_Value_Definition: 
The dam holds a reservoir designed for recreational use. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Fire/Farm Pond 
Enumerated_Domain_Value_Definition: 
The dam holds water used for livestock, or used as a water supply in case of fire. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Fish & Wildlife 
Enumerated_Domain_Value_Definition: 
The dam holds a reservoir designed as a habitat for fish or other wildlife. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Debris Control 
Enumerated_Domain_Value_Definition: 
The dam catches debris in case of flash floods. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Tailings 
Enumerated_Domain_Value_Definition: 
The dam holds a pond containing, in aqueous form, ore and waste materials discarded in ore-treatment processes. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Other 
Enumerated_Domain_Value_Definition: 
The dam meets the selection criteria for dams but is used for a purpose other than irrigation, power generation, flood control, navigation, water supply, recreation, fire or farm water supply, fish & wildlife habitat, debris control, or holding tailings. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Attribute: 
Attribute_Label: Nid_damtyp 
Attribute_Definition: 
A term indicating the dam type as one of the following: Arch, Buttress, Gravity 
Attribute_Definition_Source: U.S. Army Corps of Engineers 
Attribute_Domain_Values: 
Enumerated_Domain: 
Enumerated_Domain_Value: Arch 
Enumerated_Domain_Value_Definition: 
A concrete or masonry dam which is curved upstream so as to transmit the major part of the water load to the abutments. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Buttress 
Enumerated_Domain_Value_Definition: 
A dam consisting of a watertight part supported at intervals on the downstream side by a series of buttresses (reinforcing structures). 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Gravity 
Enumerated_Domain_Value_Definition: 
A dam constructed of concrete and/or masonry which relies on its weight and internal strength for stability. Includes all dams that are not either arch or buttress dams. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Attribute: 
Attribute_Label: Year_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: 1995 
Attribute: 
Attribute_Label: Nid_height 
Attribute_Definition: 
The maximum of either the dam height, the hydraulic height, or the structural height of the dam. A value of 0 indicates that the height is unknown. 
Attribute_Definition_Source: U.S. Geological Survey 
Attribute_Domain_Values: 
Range_Domain: 
Range_Domain_Minimum: 3 
Range_Domain_Maximum: 6200 
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: Federal 
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: State 
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: Local Gov't 
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: Public Utility 
Enumerated_Domain_Value_Definition: 
The dam is owned by a public utility. 
Enumerated_Domain_Value_Definition_Source: 
U.S. Army Corps of Engineers 
Enumerated_Domain: 
Enumerated_Domain_Value: Private 
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 
Attribute: 
Attribute_Label: Near_city 
Attribute_Definition: 
The name of the nearest downstream 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: 
Unrepresentable_Domain: city names. 
Attribute: 
Attribute_Label: Owner 
Attribute_Definition: The name of the owner of the dam. 
Attribute_Definition_Source: U.S. Army Corps of Engineers 
Attribute_Domain_Values: 
Unrepresentable_Domain: 
There is no predefined set of owner names. 
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: 
Range_Domain: 
Range_Domain_Minimum: 0.00 
Range_Domain_Maximum: 20358400.0 
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: 
Range_Domain: 
Range_Domain_Minimum: 0.00 
Range_Domain_Maximum: 300000.00 
Attribute: 
Attribute_Label: Norm_stor 
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. 
Attribute_Definition_Source: U.S. Army Corps of Engineers 
Attribute_Domain_Values: 
Range_Domain: 
Range_Domain_Minimum: 0.00 
Range_Domain_Maximum: 9700000000.0 
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: 
Range_Domain: 
Range_Domain_Minimum: 0.00 
Range_Domain_Maximum: 9700000000.0 
Attribute: 
Attribute_Label: Longitud_x 
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: -162.928333 
Range_Domain_Maximum: -66.015000 
Attribute: 
Attribute_Label: Latitud_x 
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: 18.018056 
Range_Domain_Maximum: 68.068889 
Attribute: 
Attribute_Label: Fips_state 
Attribute_Definition: 
The Federal Information Processing Standard (FIPS) code used by the U.S. Bureau of the Census for the State in which the dam is located. 
Attribute_Definition_Source: U.S. Army Corps of Engineers 
Attribute_Domain_Values: 
Range_Domain: 
Range_Domain_Minimum: 01 
Range_Domain_Maximum: 72 
Attribute: 
Attribute_Label: Fips_cnty 
Attribute_Definition: 
The FIPS code used by the U.S. Bureau of the Census for the county in which the dam is located. 
Attribute_Definition_Source: U.S. Army Corps of Engineers 
Attribute_Domain_Values: 
Range_Domain: 
Range_Domain_Minimum: 01009 
Range_Domain_Maximum: 72153 



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) 
Hours_of_Service: 0800-1600 
Contact_Instructions: 
In addition to the address above there are other ESIC offices throughout the country. A full list of these offices is at <http://mapping.usgs.gov/esic/esic_index.html> <http://mapping.usgs.gov/esic/esic_index.html> 
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. 



Metadata_Reference_Information: 
Metadata_Date: 19990622 
Metadata_Contact: 
Contact_Information: 
Contact_Person_Primary: 
Contact_Person: Peg Rawson 
Contact_Organization: U.S. Geological Survey 
Contact_Address: 
Address_Type: mailing address 
Address: 521 National Center 
City: Reston 
State_or_Province: VA 
Postal_Code: 20192 
Contact_Voice_Telephone: 703-648-4183 
Contact_Electronic_Mail_Address: mrawson@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