FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2003, RELEASED NOVEMBER, 2002.
DRAINAGE BASINS
Geodataset Name: BASINS Geodataset Type: Shape Geodataset Feature: Polygon
GENERAL DESCRIPTION
This dataset contains drainage basins as determined by the Florida
Department of Environmental Protection (FDEP).
DATA SOURCE(S): FLORIDA DEPARTMENT OF
ENVIRONMENTAL PROTECTION
SCALE OF ORIGINAL SOURCE MAPS: 1:24,000
GEODATASET EXTENT: State of Florida
FEATURE ATTRIBUTE TABLES
Datafile Name: BASINS.PAT
ITEM NAME WIDTH TYPE PRECISION HUC 8 CHARACTER - EXTHUC 8 CHARACTER - BASIN 22 CHARACTER - FEATURE 6 CHARACTER - PK_BASIN 6 DECIMAL - UFLAG 1 CHARACTER - HUCINT 8 DECIMAL - HUC1 10 DECIMAL - HUC12 12 DECIMAL - HUC123 14 DECIMAL - HUC1234 16 DECIMAL -
FEATURE ATTRIBUTE TABLES CODES AND VALUES
Item Item description
HUC USGS hydrologic unit code; there are eight in the district
EXTHUC Extended HUC code with 8 digits signifying a
hydrologic hierarchy:
-First two digits denote the primary basin (redefined
as item FIRST)
-Second two digits denote the secondary basin (SECOND)
-Third two digits denote the tertiary basin (THIRD)
-Fourth two digits denote the quaternary basin (FOURTH)
-Example: In HUC 03080101, any polygon with EXTHUC cn
10----- or FIRST = 10 is part of the Jane Green Creek
watershed
-EXTHUC = 99000000 is used for the main water bodies
that each HUC is based on, i.e., the main stem
of the St. Johns River, Ocklawaha River, Indian River
Lagoon, etc. These are more clearly described by the
Planning Unit codes.
BASIN Name (e.g. Sixmile Creek, unnamed canal, Crescent Lake)
FEATURE Water body type - see below for descriptions
PK_BASIN unique statewide ID
UFLAG Update flag which indicates if the polygon was revised from
the original USGS polygon:
A = attribute change only
M = existing arcs were revised (minor modification)
N = arcs were radically revised or basin was subdivided
further
U = attribute change and revised arcs or totally new
basin
HUCINT Item for internal use
HUC1 Item for internal use
HUC12 Item for internal use
HUC123 Item for internal use
HUC1234 Item for internal use
Description of the FEATURE item
The names of FEATURES in the DBF is a descriptor that attempts to segregate drainage areas into classes. The separation of the classes was an attempt to combine size, type, and artificiality into useful divisions for plotting.
The definitions of these descriptors are by Don Fouse (USGS Tallahassee), followed by definitions from the "International Glossary of Hydrology" (IGH) compiled by a joint committee of the World Meteorological Organization and the United Nations Educational, Scientific,, and Cultural Organization. Don's definitions are tailored to Florida or to GIS needs.
Definition #1 is by Don Fouse and Definition #2 is from the IGH.
STREAM 1. A natural surface-water feature with flow in a
defined channel.
2. A body of water, generally flowing in a natural surface
channel.
DRAIN 1. A small stream, generally unnamed, with a defined
channel, that typically, accepts overflow from a swamp
or other depression.
DITCH 1. A small manmade drainage feature, usually
completely artificial but occasionally a channeled
drain.
2. An artificial small-size open channel constructed
through earth or rock for the purpose of conveying
water.
CANAL 1. A large manmade drainage feature, usually completely
artificial but may be a channeled stream. Often named.
2. Artificial open channel.
SLOUGH 1. A natural surface-water feature with flow but no
defined channel.
2. Not defined by IGH.
LAKE 1. A natural body of water. Small lakes may be called
ponds. Water-filled sinkholes are often considered to be
lakes. Wide portions of streams with greatly reduced
flow are usually considered lakes.
2. An inland body of water of considerable size.
RESERV 1. An artificial lake or pond. Includes stock ponds,
real estate lakes, and impoundment's. A reservoir.
2. A body of water, either natural or artificial, used for
storage, regulation, and control of water.
NONCON 1. Area that is within the drainage boundary of a
water feature but which is drained internally and does
not contribute runoff to the water feature. A
noncontributing area.
2. Not defined by IGH.
OUTLET 1. Outflow stream from a reservoir or lake.
2. Opening through which water flows out of a reservoir or
stream.
BAY 1. Invagination in the coastal shoreline prominent enough
to be considered a separate feature. Usually named.
2. Not defined by IGH.
BAYOU 1. A stream without gradient but with flow generated by
tide or stream discharge.
2. Not defined by IGH.
LAGOON 1. An elongated shallow water body with poorly defined
tidal flux, protected by a barrier island.
2. A shallow sound, channel, or pond communicating with a
larger body of water, or a shallow artificial pool or
pond.
RUNOFF 1. Direct surface or subsurface flow to a water body.
2. Outflow of water towards the streams along the ground
surface or within the soil.
REACH 1. A section of a stream. The section will often be
separated by a lake or marsh from other sections and may
have a different name.
2. A straight, continuous, or extended part of a stream
viewed without interruption (as between two bends) or
chosen between two specified points.
USER NOTES:
FGDL QUALITY ASSURANCE STATUS:
-Set Tolerances to FGDL Standards
REFERENCES:
DATA LINEAGE SUMMARY:
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 SOURCE CONTACT(S):
Name: FLORIDA DEPARTMENT OF ENVIRONMENTAL
PROTECTION
Abbr. Name: FDEP
Address: Florida Department of Environmental Protection
3900 Commonwealth
Tallahassee FL 32399
Phone: (850) 488-3701
Web site: http://www.dep.state.fl.us
Contact Person: Heather Stepanowich
GIS Section
Phone: (850) 291-9852
E-mail:
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