FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION (VERSION 1.0) 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.DBF ITEM NAME WIDTH TYPE PRECISION AREA 12 Decimal 3 PERIMETER 12 Decimal 3 BASINS_ 11 Decimal 0 BASINS_ID 11 Decimal 0 HUC 8 Character EXTHUC 8 Character BASIN 22 Character FEATURE 6 Character PK_BASIN 6 Decimal 0 UFLAG 1 Character HUCINT 8 Decimal 0 HUC1 10 Decimal 0 HUC12 12 Decimal 0 HUC123 14 Decimal 0 HUC1234 16 Decimal 0 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 GeoPlan use HUC1 Item for internal GeoPlan use HUC12 Item for internal GeoPlan use HUC123 Item for internal GeoPlan use HUC1234 Item for internal GeoPlan use Description of the FEATURE item The names of FEATURES in the Coverage.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 impoundments. 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. 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: No QA performed as of FGDL v. 1 REFERENCES: DATA LINEAGE SUMMARY: MAP PROJECTION PARAMETERS Projection ALBERS Units METERS Datum NAD27 Spheroid CLARKE 1866 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 Fax: Web site: http://www.dep.state.fl.us Ftp site: E-mail: Contact Person: DEP Bureau of Information Systems GIS Section Phone: (850) 488-0892 E-mail: FGDL CONTACT: Name: UNIVERSITY OF FLORIDA GEOPLAN CENTER Abbr. Name: GeoPlan Center Address: University of Florida, GeoPlan Center 431 Architecture PO Box 115706 Gainesville, FL 32611-5706 Phone: (352) 846-3125 Fax: (352) 846-3124 Web site: http://www.geoplan.ufl.edu/projects/fgdl.htm Contact FGDL*: to request FGDL data: fgdl-request@geoplan.ufl.edu to report data problems: fgdl-data@geoplan.ufl.edu for Viewer problems: fgdl-apps@geoplan.ufl.edu for image problems: fgdl-image@geoplan.ufl.edu for FGDL Viewer Extensions: www.geoplan.ufl.edu/projects/fgdl.htm or ftp.geoplan.ufl.edu * Please use the email address as the primary method of contacting GeoPlan. The phone number can be used as a secondary form of contact. Thank you.