FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: LAKES (AREAS) IN FLORIDA - SEPTEMBER 2005

Geodataset Name:       LAKES_AREAS_SEP05
Geodataset Type:       SHAPEFILE
Geodataset Feature:    Polygon
Feature Count:         4243
GENERAL DESCRIPTION:
This dataset contains primary lakes in north and central Florida developed from GNIS, USGS 1:24k Hydrography data, 1994 DOQQs, and USGS DRGs and reviewed by DEP and WMD personnel. Please Note: The National Hydrography Dataset (NHD1:24K) statewide download of March 17th 2015, includes all surface waters in the state. Only a collection of named lakes or reservoirs extracted from the NHD are used in this layer.
DATA SOURCE(S):                    Florida Department of Environmental Protection
SCALE OF ORIGINAL SOURCE MAPS:     24000
GEODATASET EXTENT:                 State of Florida
PUBLICATION DATE: 20050914 TIME PERIOD OF CONTENT: Begin Date: 20020101 End Date: 20050912 DOWNLOAD LINK: http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES:

Datafile Name: LAKES_AREAS_SEP05.DBF
ITEM NAME WIDTH TYPE
OBJECTID
4 OID
Shape
4 Geometry
NAME
100 String
COUNTY
50 String
DESCRIPT
30 String
FGDLAQDATE
36 Date
AUTOID
4 Integer
SHAPE.AREA
0 Double
SHAPE.LEN
0 Double

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item
Item Description
OBJECTID Internal feature number.

Shape Feature geometry.

NAME Lake name derived by referencing all existing data sources and QA review by local FDEP district field biologists.

COUNTY Florida county name in all capital letters.

DESCRIPT Based on NAME field.

FGDLAQDATE The date FGDL acquired the data from the source.

AUTOID Unique ID added by GeoPlan

SHAPE.AREA Area in meters

SHAPE.LEN Perimeter in meters


USER NOTES:
This data is provided 'as is'. GeoPlan relied on the integrity
of the original data layer's topology
This data is provided 'as is' by GeoPlan and is complete to our
knowledge.
GeoPlan relied on the integrity of the attribute information within
the original data.

Provide matching point and polygon lake coverages, most with verified names.

This data is provided 'as is' and its horizontal positional accuracy
has not been verified by GeoPlan

This data is provided 'as is' and its vertical positional accuracy
has not been verified by GeoPlan

This coverage includes every major lake but is not a complete coverage of the 
lakes in Florida. South Florida is not included in this coverage. Lakes data will likely 
be updated in the future to include agency developed waterbody IDs for each lake. 
Also, USGS GNIS naming board will be given the chance to check and approve 
the determined lake names. If/as this effort is accomplished, GNIS IDs may be 
added to the attribute data.

FDEP:
This data is intended to be used for general informational and planning purposes, 
and is not appropriate for legal and/or cadastral purposes.

FDEP:
The data set is NOT a survey document and should not be utilized as such.
FDEP GIS data is provided as a public service. FDEP makes every effort to provide
accurate and complete data. Metadata is provided for all datasets and no data should
be used without first reading and understanding the limitations of the data. The
Florida Department of Environmental Protection (FDEP) provides NO WARRANTY as to the
accuracy of this data or any corresponding attributes or metadata. Data is provided
in an as is condition, without warranty of any kind, either expressed or implied,
including any assurance that the data is fit for a particular purpose. FDEP shall
have no liability, in any case, to the use of provided data (including
redistribution and reproduction). Full liability, responsibility and consequence
relating to the use of provided data rest with the user.

The Florida Geographic Data Library is a collection of Geospatial Data
compiled by the University of Florida GeoPlan Center with support from
the Florida Department of Transportation. GIS data available in FGDL is
collected from various state, federal, and other agencies (data sources)
who are data stewards, producers, or publishers. The data available in
FGDL may not be the most current version of the data offered by the
data source. University of Florida GeoPlan Center makes no guarantees
about the currentness of the data and suggests that data users check
with the data source to see if more recent versions of the data exist.

Furthermore, the GIS data available in the FGDL are provided 'as is'.
The University of Florida GeoPlan Center makes no warranties, guaranties
or representations as to the truth, accuracy or completeness of the data
provided by the data sources. The University of Florida GeoPlan Center
makes no representations or warranties about the quality or suitability
of the materials, either expressly or implied, including but not limited
to any implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. The University of Florida GeoPlan Center
shall not be liable for any damages suffered as a result of using,
modifying, contributing or distributing the materials.

A note about data scale: 

Scale is an important factor in data usage.  Certain scale datasets
are not suitable for some project, analysis, or modeling 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.
1:125000 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 analysis. 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 webpage at:
http://geoplan.ufl.edu/education.html

REFERENCES:
Florida Department of Environmental Protection Geospatial Open Data
http://geodata.dep.state.fl.us/datasets/florida-lakes

DATA LINEAGE SUMMARY:
GNIS Lake Points were used as reference points to find the lakes. 
The GNIS points were then checked against the 1995 Digital Ortho Quadrangles (DOQs). 
The points were then moved if necessary to represent the center of the lakes, 
or the point most likely to remain water during drought. 
Other points were added to represent lakes that did not have GNIS points. 
The names of the points were then checked against the Digital Raster Graphics and other resources. 
The USGS Hydrography layer was then clipped to the point coverage, 
so that there was a layer of just the polygons that intersected the points. 
The polygon coverage was then cleaned up to match the 1995 DOQs 
and given the appropriate name from the point coverage. 
The lakes that did not have names were sent to the respective 
Water Management District lake biologists for QA/QC. 
Additional QA/QC included the following: A LINK field was 
developed to ensure point + polygon correspondence 373 Duplicate Names 
were investigated 252 names had blank spaces before the 
Name that had to be removed County Names were 
compared to DEP Standards Unnecessary fields were removed
Process Date: 20020409

Devan Branscum added another lake and modified several others at the request of Lou Ley in the Central District. Process Date: 20021017
Devan Branscum added 9 lakes and modified others at the request of Lou Ley in the Central District. Process Date: 20021107
Devan Branscum added more lakes at the request of Lou Ley in the Central District. Process Date: 20020524
Devan Branscum added 2 lakes (Lake Orienta and Lake Seminary) at the request of Lou Ley in the Central District. Process Date: 20021016
There are 1058 records that were removed from the 4329 found in the original DataMiner Lakes layer. 596 new lake features were collected from the NHD (National Hydrography Dataset) and added to the Dataminer SDE Lakes layer. Those NHD files can be found in the following directory: \\gisraid\gissub \gopalan_h\NHDinGEO\24k on the Floridadep network. Process Date: 20050912
Updated dataset acquired by BIS/GIS Section from Ron Hughes and inserted in ArcSDE. Metadata updated Process Date: 20050914
The GeoPlan Center downloaded the Florida Lakes dataset on August 1st, 2018 from the FDEP Data Portal: Florida Department of Environmental Protection Geospatial Open Data: http://geodata.dep.state.fl.us/ http://geodata.dep.state.fl.us/datasets/florida-lakes Please Note: Data is also available via the FTP server: http://publicfiles.dep.state.fl.us/otis/gis/data/lakes_areas.zip LAKES_AREAS.zip LAKES_AREAS.gdb The GDB layer was exported to shapefile. The dataset's projection was redefined to FGDL Albers. During the QA/QC process the following tasks were undertaken: - Redefined the dataset's projection from FDEP Albers to FGDL Albers. - Deleted the OBJECTID field. - Uppercased all records in the table. - A DESCRIPT field was added based on NAME. - A FGDLAQDATE field was added based on date downloaded from source. - Renamed file from LAKES_AREAS to LAKES_AREAS_SEP05. Process Date: 20180807
Metadata imported. Process Date: 20180828
Dataset copied. Process Date: 20180828
MAP PROJECTION PARAMETERS:

Projection                          ALBERS
Datum                               HPGN
Units                               METERS
Spheroid                            GRS1980
1st Standard Parallel               24  0  0.000
2nd Standard Parallel               31 30  0.000
Central Meridian                   -84 00  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:
Abbr. Name:
Address:


Phone:

Web site:
E-mail:
Contact Person:
         Phone:
        E-mail:
Florida Department of Environmental Protection (FDEP) OTIS/GIS Section
FDEP
2600 Blair Stone Rd, MS 6520
Tallahassee, FL
32399-2400


http://publicfiles.dep.state.fl.us/otis/gis/data/ GIS.Librarian@dep.state.fl.us

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

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