FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2004

TITLE: SINKHOLES OF FLORIDA

Geodataset Name: 	SNKHLE
Geodataset Type: 	SHAPE
Geodataset Feature: 	POINT

GENERAL DESCRIPTION:

This dataset contains a point coverage of sinkhole locations for the State of Florida.

DATA SOURCE(S):  			Subsurface Evaluations, Inc.
SCALE OF ORIGINAL SOURCE MAPS:    	N/A
	
DATE OF AUTOMATION OR SOURCE: 		1992
GEODATASET EXTENT:  			State of Florida

FEATURE ATTRIBUTE TABLES:

Datafile Name:   SNKHLE.DBF
 
ITEM NAME         WIDTH     TYPE     PRECISION  
AREA                18     DECIMAL      5                        
PERIMETER           18     DECIMAL      5                        
SNKHLE_              5     DECIMAL      -                        
SNKHLE_ID            5     DECIMAL      -                        
FSRI_CODE            6     CHARACTER    -                        
SH_NUMBER            4     DECIMAL      -                        
COUNTY              12     CHARACTER    -                        
QUADRANGLE          19     CHARACTER    -                        
Z_4_SECTIO           2     CHARACTER    -                        
SECTION              2     DECIMAL      -                        
TOWNSHIP             3     CHARACTER    -                        
RANGE                3     CHARACTER    -                        
LATITUDE             9     DECIMAL      6                        
LONGITUDE           10     DECIMAL      6                        
YEAR                 4     DECIMAL      -                        
MONTH                2     DECIMAL      -                        
DATE                 2     DECIMAL      -                        
TIME                10     CHARACTER    -                        
LENGTH               6     DECIMAL      2                        
WIDTH                6     DECIMAL      2                        
DEPTH                6     DECIMAL      2                        
LAND_ELEV            6     DECIMAL      2                        
LS_ELEV              8     DECIMAL      2                        
COVER_THIC           7     DECIMAL      2                        
WT_ELEV              6     DECIMAL      2                        
POT_SUR_EL           6     DECIMAL      2                        
HEAD_DIFF            6     DECIMAL      2                        
Z4_HR_RAIN           5     DECIMAL      2                        
Z_DYS_RAIN           5     DECIMAL      2                        
Z0_DYS_RAI           5     DECIMAL      2                        
TRS                  8     CHARACTER    -                        

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

item		item description
FSRI_CODE	Internal code used by Florida Sinkhole Research Institute.
SH_NUMBER	unique value for each sinkhole
COUNTY 		County of sinkhole location
QUADRANGLE	Quad name of sinkhole location
Z_4_SECTIO	Location of sinkhole by quarter section
SECTION		Section of Public Land Survey System (PLSS)
TOWNSHIP	Township of Public Land Survey System (PLSS)
RANGE		Range of Public Land Survey System (PLSS)
  
LATITUDE	Latitude in decimal degrees
LONGITUDE	longitude in decimal degrees
YEAR		Year of recorded existence
MONTH		Month of recorded existence
DATE		Day of recorded existence
TIME		not recorded
LENGTH		Diameter of sinkhole in feet
 
WIDTH		Diameter of sinkhole in feet
DEPTH		Depth of sinkhole in feet
LAND_ELEV	Elevation (sea-level) of land at sinkhole point
LS_ELEV		unknown
COVER_THIC	unknown
WT_ELEV		unknown
POT_SUR_EL	Potentiometirc surface elevation ?
HEAD_DIFF	unknown
Z4_HR_RAIN	unknown
Z_DYS_RAIN	unknown
 
Z0_DYS_RAI	unknown
TRS		Township, range, and section location in PLSS

USER NOTES: No metadata was provided by the Florida Sinkhole Research Institute or Subsurface Evaluations, Inc. Metadata was created by FGDL for items that could be determined by examination.

FGDL QUALITY ASSURANCE STATUS:

- Set tolerances to Geoplan Standards
- Added item TRS based on existing township, range and section items.
- Reprojected from decimal degree lat/long to FGDL Albers.
- Added Devil's Millhopper sinkhole to coverage and inserted known information.

REFERENCES:

DATA LINEAGE SUMMARY:

Data was orginally copiled by the Florida Sinkhole Research Insititute. It was updated by Subsurface Evaluations Inc. of Tampa Florida.

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 SOURCES CONTACT(S):

Name: 			Subsurface Evaluations, Inc.	 
Address: 		3706 Swann Ave.
			Tampa FL 33609
Phone: 			(813)353-9083 or (800)508-2509
Web site: 		http://www.subsurfaceevaluations.com/
Contact Person: 	
         Phone: 	(813)353-9083

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