FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2003, RELEASED NOVEMBER, 2002.
US CENSUS BUREAU (TIGER) 1:100,000 HYDROGRAPHY
Geodataset Name: TGRHYD Geodataset Type: Shape Geodataset Feature: Line
GENERAL DESCRIPTION:
This dataset contains statewide surficial water features from 1990 TIGER/Line files.
DATA SOURCE(S): UNITED STATES BUREAU OF THE CENSUS
SCALE OF ORIGINAL SOURCE MAPS: 1:100,000 DATE OF AUTOMATION OR SOURCE: 1990 GEODATASET EXTENT: State of Florida
FEATURE ATTRIBUTE TABLES
Datafile Name: TGRHYD.DBF
NAME WIDTH TYPE PRECISION FNODE_ 5 DECIMAL - TNODE_ 5 DECIMAL - LPOLY_ 5 DECIMAL - RPOLY_ 5 DECIMAL - LENGTH 18 DECIMAL 5 TGRHYD_ 5 DECIMAL - TGRHYD_ID 5 DECIMAL - CFCC 3 CHARACTER - FENAME 30 CHARACTER - DESCRIPT 80 CHARACTER -
FEATURE ATTRIBUTE TABLES CODES AND VALUES:
ITEM DESCRIPTION
CFCC Census Feature Class Codes classify all water features
(delimited with a 'H') according to Census Bureau Standard.
H00 Water feature, classification unknown, or not elsewhere classified
H01 Shoreline of perennial, all year, water feature
H02 Shoreline of intermittent, primarily during the rainy season, water
feature
H10 Stream
H11 Perennial stream or river
H12 Intermittent stream, river, or wash
H13 Braided stream or river
H20 Canal, ditch, or aqueduct
H21 Perennial canal, ditch, or aqueduct
H22 Intermittent canal, ditch, or aqueduct
H31 Perennial lake or pond
H70 Non visible water definition boundary used to separate water
boundaries.
An example is the difference, in names, between a gulf and an ocean.
H71 USGS closure line of the maritime shore.
H74 Water area measurement boundary separating land from coastal
or great lakes.
H75 Census water boundary separating coastline from the territorial
limit. This limit is set at three miles from the shoreline.
FENAME Feature name of the water body
DECRIPT FGDL Added item based on the CFCC codes listed above
USER NOTES:
United States legal and statistical entities includes Federal Information Processing Standards (FIPS) codes and/or Census Bureau codes so entities can be easily matched with the 1990 census data. Please refer to the Census Bureau Publication, 1990 Census of Population and Housing Tabulation and Publication Program, for a description of the Public Law (PL) 94-171 data files, Summary Tape Files (STFs), and other sources of data from the 1990 census.
Hydrologic features in CFCC class H no longer are standardized to show directional information.
FGDL QUALITY ASSURANCE STATUS:
-Tolerances were set to FGDL standards.
-Coverage was Projected to FGDL Albers.
-DESCRIPT item added based on the CFCC Item (see above).
REFERENCES:
N/A
DATA LINEAGE SUMMARY:
The original TIGER/Line « data is not in a map projection even though most of the features were scanned directly from source maps (usually USGS 1:100,000 topographic quads) that were in a projection. The USGS source maps were in Universal Transverse Mercator (UTM) projections. After the map sheets were scanned, the coordinates were transformed into geographic coordinates of latitude and longitude. The USGS Digital Line Graphs (DLGs) were derived by the same method, but typically were distributed in UTM projections.
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: UNITED STATES CENSUS BUREAU
Abbr. Name: USCB
Address: United States Census Bureau
Tiger Mapping Service
Washington, D.C. 20233
Phone: (301) 457-1128 (Geography)
(301) 457-4100 (Customer Service)
Fax: N/A
Web site: http://www.census.gov/ftp/pub/geo/www/tiger
GIS gateway:
http://www.census.gov/geo/www/gis_gateway.html
Ftp site:
E-mail: Tiger@census.gov
Contact Person: Products and Services Staff, Geography Division
Phone: (301) 457-1128
E-mail: Tiger@census.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