Geodataset Name:       SNKHLE_APR07
Geodataset Type:       SHAPEFILE
Geodataset Feature:    Point
Feature Count:         2831

DATA SOURCE(S):                    Florida Department of Environmental Protection, Florida Geological Survey
SCALE OF ORIGINAL SOURCE MAPS:     N/A
DATE OF AUTOMATION OF SOURCE:      20070410
GEODATASET EXTENT:                 State of Florida

FEATURE ATTRIBUTE TABLES:

Datafile Name: SNKHLE_APR07.DBF

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item	Item Description
OBJECTID	Internal feature number.
REF_NUM	First two digits follow Florida DOT county numbering system, last three digits are randomly assigned.
TRUE_SINK	Is it a true sink?
DATE_ADD	Date added
DATE_REV	Date revised
OMONTH	Occurred month
ODAY	Occurrence day
OYEAR	Occurrence year
TIME	Occurrence time
LONG_DD	Longitude - Decimal Degrees
LONG_MM	Longitude - Minutes
LONG_SS	Longitude - Seconds
LONGDEC	Longitude - Decimal Degrees
LAT_DD	Latitude - Decimal Degrees
LAT_MM	Latitude - Minutes
LAT_SS	Latitude - Seconds
LATDEC	Latitude - Decimal Degrees
CO	County
TWNSHP	PLSS Township
RANGE	PLSS Range
SECTION	PLSS Section
QTRSECT1	Smallest Quarter
QTRSECT2	Largest Quarter
QTRCONVERT	Quarter Conversion
QTRCONVE_1	Quarter Conversion
QTRQTRFGS	QTR - QTR in FGS Standard Doc
QUAD	USGS Topographical Quadrangle
ONAME	Owner's Name
OSTREET	Owner's Address
OCITY	Owner's City
OZIP	Owner's Zip
EVTADDR	Event address is different from Owners
OPHONE	Owner's phone
SIZDIM	How was the size of the sinkhole determined? U = Unknown/No calculated measure M = Measured E = Estimated
SINSHAPE	Shape of sinkhole C = Circular E = Elongated E/C = Elongated U = Unknown
SINLNGTH	Length of sinkhole
SINWIDTH	Width of sinkhole
SINDEPTH	Depth of sinkhole
SLOPE	Side slope of sinkhole
WATSIN	Water in sink? Y = Yes N = No U = Unknown
WATBLS	Depth to water surface below ground surface
LIMVIS	Is limestone visible? Y = Yes N = No U = Unknown
CAVVIS	Is cave visible? Y = Yes N = No U = Unknown
SUBRATE	Substrate rate R = Rapid S = Slow U = Unknown SLOW = Slow
TRIGGERS	Trigger mechanisms
COL_CODE	Pre-Collapse Conditions 1 = Runoff Ponding 12 = Runoff Ponding, Grnd. Cracks 123 = Runoff Ponding, Grnd. Cracks, Tilting objects 12345 = Runoff Ponding, Grnd. Cracks, Tilting objects, Small holes, Well turbidity 124 = Runoff Ponding, Grnd. Cracks, Small holes 13 = Runoff Ponding, Tilting objects 14 = Runoff Ponding, Small holes 146 = Runoff Ponding, Small holes, Vegetation 15 = Runoff Ponding, Well turbidity 2 = Grnd. Cracks 23 = Grnd. Cracks, Tilting objects 234 = Grnd. Cracks, Tilting objects, Small holes 236 = Grnd. Cracks, Tilting objects, Vegetation 24 = Grnd. Cracks, Small holes 25 = Grnd. Cracks, Well turbidity 27 = Grnd. Cracks, Unknown 3 = Tilting objects 34 = Tilting objects, Small holes 35 = Tilting objects, Well turbidity 36 = Tilting objects, Vegetation 4 = Small holes 45 = Small holes, Well turbidity 46 = Small holes, Vegetation 47 = Small holes, Unknown 5 = Well turbidity 6 = Vegetation 7 = Unknown
PROPDAM	Was structure damaged? Y = Yes N = No U = Unknown
REPAIRED	Was sinkhole repaired? Y = Yes N = No U = Unknown
PLANNED	Is repair planned for sinkhole? Y = Yes N = No
TOPO1	Topography - Flat 1
TOPO2	Topography - Hilltop 2
TOPO3	Topography - Slope 3
TOPO4	Topography - Valley Bottom 4
TOPO5	Topography - Depression 5
TOPO6	Topography - Other See Comm. 6
DRAINSTR	Drainage Structures Present
LUCODE	Landuse Code 1 = Cropland 2 = Pasture 3 = Forest 4 = Grove 5 = Wetland 6 = Suburban Low Density 7 = Urban High Density 8 = Industrial
LANDUS1	Landuse - Cropland 1
LANDUS2	Landuse - Pasture 2
LANDUS3	Landuse - Forest 3
LANDUS4	Landuse - Grove 4
LANDUS5	Landuse - Wetland 5
LANDUS6	Landuse - Suburban Low Density 6
LANDUS7	Landuse - Urban High Density 7
LANDUS8	Landuse - Industrial 8
SOILTYPE	Soil Type Present
NEARSIN	Near New Sinks? Y = Yes N = No U = Unknown
OLDSIN	Near Old Sinks? Y = Yes N = No U = Unknown
COMMENTS	Comments
ACCESS_	Access to Sink
WITNAM	Witness Name
WITADDRE	Witness Address
WITCTZIP	Witness City/Zip
WITPHONE	Witness Phone
FGDLAQDATE	Date FGDL acquired the dataset.
DESCRIPT	FGDL added item based on ONAME.
AUTOID	FGDL Internal Tracking ID (FID + 1)
SHAPE	Feature geometry.

USER NOTES:

During the QA/QC process, errors of location data were discovered and all data hardcopies were reviewed to ensure correctness. If errors were found in the electronic copy, then data is corrected accordingly. Certain attributes and/or entities convey data quality information. When information to be encoded in the subfield is known to be not applicable (undefined, not relevant), then the subfield is valued by a string of "9s"; and when the information to be encoded is relevant but unknown (or missing), then the subfield is valued by using a "U" for alphanumeric strings or a string of "9s" for numeric data. FGDL downloaded this dataset from the Florida Department of Environmental Protection website in ArcView shapefile format. The Arcview shapefile is not as current as the excel file, which is also available for download from the FDEP website.

Sinkholes shown are publicly reported. As such they represent only a portion of all sinkholes to be found in the State of Florida. Most reported sinkholes come from population centers throughout Florida. Data was originally collected by the Florida Geological Survey, transferred to the Florida Sinkhole Research Institute (FSRI), University of Central Florida, then transferred back to the Florida Geological Survey and has been updated approximately every 2-3 months. Shapefiles for point features are generated approximately every year. All attributes created were visually verified by a geologist and GIS personnel (actual sites may have not been field checked). THE DATA HEREIN REPRESENTS REPORTED SINKHOLE ACTIVITY BUT MAY ALSO CONTAIN NON-KARST RELATED SUBSIDENCE SUCH AS COLLAPSED SEPTIC SYSTEMS, WATER MAINS, AND/OR OTHER MAN-MADE FEATURES. SITES SHOULD REMAIN SUSPECT UNTIL FURTHER GEOTECHNICAL EVALUATIONS HAVE BEEN MADE AT THE SITE OR INFORMATION HAS BEEN PROVIDED TO CONFIRM THE EXISTENCE OF A KARST RELATED SINKHOLE. THIS DATA SHOULD NOT BE USED FOR SITE-SPECIFIC EVALUATION, ENGINEERING, AND/OR INTERPRETATION PURPOSES. THIS DATA MAY NOT BE RESOLD IN ANY FASHION AND IS PUBLIC DATA.

GeoPlan relied on the integrity of the attribute information within the original data.

FLORIDA GEOLOGICAL SURVEY SPATIAL DATA DISCLAIMER This geologic data was developed by the Florida Department of Environmental Protection (FDEP) - Florida Geological Survey (FGS) to carry out agency responsibilities related to management, protection, and development of Florida's natural resources. Although efforts have been made to make the information accurate and useful, the FDEP/FGS assumes no responsibility for errors in the information and does not guarantee that the data are free from errors or inaccuracies. Similarly FDEP/FGS assumes no responsibility for the consequences of inappropriate uses or interpretations of the data. As such, these digital data are distributed on an "as is" basis and the user assumes all risk as to their quality, the results obtained from their use, and the performance of the data.FDEP/FGS bears no responsibility to inform users of any changes made to this data. The data in this database was obtained from a variety of sources. Sinkhole records listed in this database, in many instances, have not been field checked or verified by FDEP/FGS professional geologists. Additionally, the locations of many of these sinkholes have not been verified. As such, anyone using this data is advised that precision implied by the data may far exceed actual precision. Comments on this data are invited and FDEP/FGS would appreciate that documented errors be brought to staff attention. The development of these data sets represents a major investment of staff time and effort. As a professional responsibility, we expect that the FDEP/FGS will receive proper credit when you utilize these data sets. Further, since part of this data was developed and collected with U.S. Government or State of Florida funding, no proprietary rights may be attached to it in whole or in part, nor may it be sold to the U.S. Government or the Florida State Government as part of any procurement of products or services . The use of information from the FGS site by a third party does not indicate that the FGS recommends or endorses the third party user or their services. Please contact the FGS GIS subsection for additional information. Florida Geological Survey ATTN: Geographic Information Systems Gunter Building, MS720 903 W. Tennessee St. Tallahassee, Florida 32304 (850) 487-9455 ext. 153

This information contained in this dataset is primarily used to more fully understand the unique relationship between karst and the state's groundwater resources and aquifer systems. It should be noted that not all sinkhole reports are karst related and that determination has not been added to this database. Since its inception in 1907, the Florida Geological Survey (FGS) has gathered data on Florida karst (sinkholes, caves, springs, swallets etc.). In 1982, the Florida Sinkhole Research Institute (FSRI) was created at the University of Central Florida in Orlando. At that time all FGS sinkhole data files were transferred to the FSRI. One of their programs was to compile and tabulate this information and convert it to a computer database. When the Florida legislature discontinued FSRI's funding in the early 1990's, the FSRI nearly ceased operations entirely. After that the database was returned to the FGS and selected portions of the information were published in 1994 as FGS Open File Report 58, "FLORIDA SINKHOLE INDEX." The data is currently available in a Microsoft Excel spreadsheet and ESRI shapefile format via the FGS Internet web site. The Florida Sinkhole Research Institute (FSRI) is still located at the University of Central Florida (UCF) and their current director is Dr. Shiou-San Kuo. He can be reached at UCF's Department of Civil and Environmental Engineering at (407) 823-2280.

No known accuracy can be reported using this data as some reports only generate PLSS coordinates. Sinkholes are not normally surveyed.

No known vertical accuracy can be assumed with this dataset. Sinkholes are not normally surveyed.

THE DATA INCLUDED IN FGDL ARE 'AS IS' AND SHOULD NOT BE CONSTRUED AS LEGALLY BINDING. 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:

OFR-58: Florida Sinkhole Index (Document) Florida Geological Survey, 1994 FDEP FGS Sinkholes Database Download Page: http://www.dep.state.fl.us/geology/gisdatamaps/sinkhole_database.htm

DATA LINEAGE SUMMARY:

Exported relevant fields from Excel database to .dbf file. Used a DEP Custom Arcview Extension to import *.dbf file and reproject to custom Albers projection and saved as shapefile. Shapefile was checked for gross errors in horizontal location and corrected. Process Date: 20020900 In this process step, database refers to the Microsoft Excel data-file created to maintain the sinkhole data. In preparation for a new database the following has been performed on this database: 1. All data was QA/QC for positional accuracy by running two error checks: a. Spatial join of original data to verify STR and COUNTY information. b. Ensure the data was inside the boundaries of Florida. 2. Database errors were double checked against paper copies of the reports to ensure the database contained the correct coordinates, addresses and/or location references. If errors were found, corrections to the fields were made immediately. a. In the case a specific reference number (REFNUM) was spatially incorrect and was discovered to be in another county the REFNUM was reassigned and noted in the COMMENTS. b. In the case of errors regarding location, LAT/LONG and/or PLSS data was corrected to the proper coordinates based on the Florida DEP, Division of State Lands PLSS layer. c. Location references for reports that were determined to not be karst related 3. No other errors were checked and/or corrected. 4. Once QA/QC had been completed on the database, the database was converted into a dBase IV file, opened in ArcMap, and plotted using the ADD XY tool within ArcMap. 5. The event file was then generated to a point shapefile. Process Date: 20070410 GeoPlan downloaded the sinkhole shapefile from the following FDEP FGS website in August 2007: FDEP FGS Sinkholes Database Download Page: http://www.dep.state.fl.us/geology/gisdatamaps/sinkhole_database.htm The original dataset was projected in FDEP Albers. GeoPlan, during the QA/QC process included the following aspects: (1) Changed the filename from SinkholeDatabase.shp to SNKHLE_APR07 (2) Added FGDLAQDATE field (3) Added DESCRIPT field based on ONAME (4) Added AUTOID field for internal tracking (based on FID + 1) (5) Changed all field values to uppercase Process Date: 20070827 The GeoPlan Center downloaded the dataset with 2843 records, then subsequently deleted 12 records which were outside the extent of the state of Florida. Accordingly the current dataset has 2831 records. Process Date: 20070827

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 Geological Survey
FSRI, FDEP/FGS
903 W. Tennessee St., Gunter Bldg MS720
Tallahassee, FL
32304
850-487-9455


http://www.dep.state.fl.us/geology/
rick.green@dep.state.fl.us
Rick Green

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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