FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2006
TITLE: U.S. ARMY CORPS OF ENGINEERS DAM LOCATIONS
Geodataset Name: COEDAM Geodataset Type: SHAPE Geodataset Feature: POINT
GENERAL DESCRIPTION:
This dataset contains a point coverage of dams which originally was derived from the national inventory of dams data base (U.S. Army Corps of Engineers, 1982). The coverage includes locations of and selected characteristics of reservoirs and controlled natural lakes that have normal capacities of at least 5,000 acre-feet or maximum capacities of at least 25,000 acre-feet and that were completed as of January 1, 1988.
DATA SOURCE(S): U.S. Geological Survey SCALE OF ORIGINAL SOURCE MAPS: UNKNOWN DATE OF AUTOMATION OR SOURCE: Source 1982, Automated / Updated 1990 GEODATASET EXTENT: State of Florida
FEATURE ATTRIBUTE TABLES
Datafile Name: COEDAM.PAT
NAME WIDTH TYPE PRECISION AREA 18 DECIMAL 5 PERIMETER 18 DECIMAL 5 COEDAM_ 5 DECIMAL - COEDAM_ID 5 DECIMAL - FIPS 5 DECIMAL 0 NUM 3 DECIMAL - DAMNAME 37 CHARACTER - RESNAME 26 CHARACTER - OWNERNAME 20 CHARACTER - OWNERCODE 1 CHARACTER - SIZECODE 1 CHARACTER - MAXCAP 9 DECIMAL 0 NORMCAP 9 DECIMAL 0 SURFCAP 9 DECIMAL 0 POPNAME 37 CHARACTER - HUC 8 DECIMAL - RIVER 29 CHARACTER - YEAR 4 DECIMAL - PURP 10 CHARACTER - HEIGHT 5 DECIMAL 0 HYDCAP 8 DECIMAL 0 LOCKS 1 DECIMAL - SOURCE 1 CHARACTER - SURFAREA 9 DECIMAL 0 SURFACODE 1 CHARACTER - STORAT 4 DECIMAL 2 STORATCODE 1 CHARACTER - DRAINAREA 9 DECIMAL 2 STLINE 1 DECIMAL - ALTST 2 CHARACTER - ALTID 5 DECIMAL - REV 4 DECIMAL 1 LONDD 12 DECIMAL 6 LATDD 12 DECIMAL 6 DESCRIPT 40 CHARACTER -
FEATURE ATTRIBUTE TABLES CODES AND VALUES:
FIPS = County FIPS code
NUM = Arbitrary sequence number of dams within each state
DAMNAME = Name of dam
RESNAME = Name of reservoir
OWNERNAME = Name of owner
OWNERCODE = Owner code
OWNERCODE DESCRIPTION
2 U.S. Bureau of Reclamation
3 U.S. Army Corps of Engineers
4 Tennessee Valley Authority
5 Other Federal Agency
6 Non-Federal Agency
SIZECODE = Size code
SIZECODE DESCRIPTION
2 Normal capacity at least 5000 but less than 25000 ac-ft
4 Normal capacity at least 25000 but less than 50000 ac-ft
6 Normal capacity at least 50000 ac-ft
8 Normal cap less than 5000 and maximum cap at least 25000 ac-ft
MAXCAP = Maximum capacity, in acre-feet
NORMCAP = Normal capacity, in acre-feet
SURFCAP = Capacity used to calculate surface area
POPNAME = Popular name of dam
HUC = Hydrologic Unit Code (see Basins Dataset)
RIVER = Name of river on which dam is built
YEAR = Year completed
PURP = Major purpose/use of dam
PURP DESCRIPTION
C FLOOD CONTROL
D DEBRIS CONTROL
H HYDROELECTRIC
I IRRIGATION
N NAVIGATION
O OTHER
P STOCK/FARM POND
R RECREATION
S WATER SUPPLY
HEIGHT = Structural height of dam, in fee
HYDCAP = Installed power capacity, in megawatts
LOCKS = Number of navigation locks
SOURCE = Source of changes to file
SOURCE DESCRIPTION
A COE FILE
B CHANGED BY WRD BEFORE MAP REVIEW
C WRD MAP REVIEW
D NWS 85 REVIEW
E NWS 87 REVIEW
F POST NWS87 FEEDBACK
SURFAREA = Surface area, in acres
SURFACODE = Surface area code
SURFACODE DESCRIPTION
$ Louisiana, Gazetteer of Louisiana lakes and reservoirs
& Virginia State Water Control Board, Publicly owned lakes in Vi
* Montana, State Water Conservation Projects
+ Arkansas State Water Plan, Lakes of Arkansas
2 North Carolina, Register of dams and dam sites in North Caroli
3 South Carolina, State water plan report #119
4 USGS personnel in that state
5 Michigan Department of Natural Resources
6 Colorado State Engineer's Office computer printout
7 Montana Department of Natural Resources
8 Duke Power Company; information for North and South Carolina
= Arizona Department of Water Resources
? UNKNOWN
A Tennessee Valley Authority, Facts about major TVA dams and res
B Water and Power Resources Service, Bureau of Reclamation proje
C The California State Water Project--Current activities and fut
D Dams within the jurisdiction of the State of California
F Fish and Wildlife Service, Inventory of U.S. reservoirs
H New York State Department of Environmental Conservation
I Wisconsin Department of Natural Resources, Wisconsin Lakes, Pu
7-3600(75), 1975, 80 p.
K Oklahoma water atlas
L USGS publications
M Martin and Hanson
N State of Minnesota, Department of Natural Resources, Division
O Gaggiani and others, Hydrology of Area 59, Northern Great Plai
Q Pennsylvania Department of Environmental Resources, State Wate
Water Use Data System Computer Pull 4
R Florida Board of Conservation, Division of Water Resources,
Florida Lakes, Part III Gazetteer, Tallahassee, FL 1969
S Statistical compilation of engineering features on Bureau of
Reclamation projects
T Dams and reservoirs in Texas, Texas Water Commission bulletin
U Wolcott, Ernest E., Lakes of Washington Volumes 1 and 2
V Mussey, O.D., 1948, Major storage reservoirs of Virginia
W Reservoirs in the United States with largest areas as of Jan 1
1963 as listed in WSP 1838
X Miscellaneous sources as found by Lisa Arnold
Y Kentucky Natural Resources and Environmental Protection Cabine
and restoration assessments of KY lakes, final report, April 1
Z Martin and Hanson reservoirs for which maximum capacities have
changed; used the data from the Corps file
STORAT = Storage ratio (ratio of usable capacity to average annual runoff)
STORATCODE = Storage ratio code
STORATCODE DESCRIPTION
(blank) No information
1 Not listed in Martin and Hanson
L Calculated from data in annual reports
M From data in Martin and Hanson
DRAINAREA = Drainage area, in square miles
STLINE = Flag if dam is on state line
ALTST = Adjacent state FIPS abbreviation
ALTID = Alternate id no.; for 1987 water summary fig.1 graphs
REV = Revision number
LATDD = Latitude in decimal degrees
LONDD = Longitude in decimal degrees
DESCRIPT = Based upon DAMNAME (see above)
USER NOTES:
Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modelling purposes. Please be sure you are using the best available data.
1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries.
1:100000 scale datasets are recommended for projects that are at the multi-county or regional level.
1:250000 scale datasets are recommended for projects that are at the regional or state level or larger.
Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analyses. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our web pages at:
http://www.geoplan.ufl.edu/education.html
FGDL QUALITY ASSURANCE STATUS:
-Added DESCRIPT item based upon DAMNAME
-Projected to FGDL albers
-Set Tolerances to FGDL standards
-dropped extraneous items FIPSST FIPSCNTY STATENUM HUC2 HUC4 HUC6 STATE
which were derived from existing items in table.
REFERENCES:
Hitt, K.J.,compiler, 1985, Surface-water and related-land resources development in the United States and Puerto Rico: U.S. Geological Survey special map, scale 1:3,168,000.
Ruddy, B.C. and Hitt, K.J., 1990, Selected characteristics of large reservoirs in the United States and Puerto Rico, 1988: U.S. Geological Survey Open-File Report 90-163, 295 p.
U.S. Army Corps of Engineers, 1982, National inventory of dams data base in card format (computer tape), available from National Technical Information Service, Springfield, VA 22162, #ADA 118670.
U.S. Geological Survey, 1986, National Water Summary 1985-- Hydrologic events and surface-water resources: U.S. Geological Survey Water-Supply Paper 2300, 506 p.
U.S. Geological Survey, 1990, National Water Summary 1987-- Hydrologic events and water supply and use: U.S. Geological Survey Water-Supply Paper 2350, 553 p.
DATA LINEAGE SUMMARY:
This coverage is intended as a thematic data layer showing the location of dams and certain attributes of the structures. Information contained in the coverage has been used for several applications. Location, size, and owner of structures are depicted on a map of surface-water development (Hitt, 1985). Location and other selected characteristics of structures are listed in table 3 of Ruddy and Hitt (1990). The information was the basis for graphics in two National Water Summary reports. The 1985 National Water Summary shows maps of surface-water development. The 1987 National Water Summary shows graphs of cumulative reservoir storage.
The information in this coverage has been reviewed by field personnel several times. The file initially was reviewed and verified as part of the compilation of the map of surface-water development (Hitt, 1985). USGS District Offices, nine other Federal agencies, and five State agencies reviewed the location, owner, and size of structures under their jurisdiction. These early reviews occurred between 1981 and 1984.
Additional reviews of the file were made by USGS District Offices during the preparation of the State articles for the 1985 and 1987 National Water Summary reports (U.S. Geological Survey, 1986, 1990). During these reviews by the USGS District Offices, data on the normal and maximum capacities were corrected as necessary by the reviewing offices.
MAP PROJECTION PARAMETERS
Projection ALBERS Units METERS Datum HPGN Spheroid GRS1980 1st standard parallel 24 0 0.000 2nd standard parallel 31 30 0.000 central meridian -84 0 0.000 latitude of projection's origin 24 0 0.000 false easting (meters) 400000.00000 false northing (meters) 0.00000
DATA SOURCES CONTACT(S):
Name: U.S. Geological Survey
Abbr.name: USGS
Address: 12201 Sunrise Valley Drive, MS 440
Reston, VA 20192
Phone: 1-800-426-9000
Web site: www.usgs.gov
Email: h2oteam@usgs.gov
FGDL CONTACT:
Name: FLORIDA GEOGRAPHIC DATA LIBRARY
Abbr. Name: FGDL
Address: Florida Geographic Data Library
431 Architecture Building
PO Box 115706
Gainesville, FL 32611-5706
Web site: http://www.fgdl.org
Contact FGDL:
Technical Support: http://www.fgdl.org/fgdlfeed.html
FGDL Frequently Asked Questions: http://www.fgdl.org/fgdlfaq.html
FGDL Mailing Lists: http://www.fgdl.org/fgdl-l.html
For FGDL Software: http://www.fgdl.org/software.html