FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: SUBSIDENCE INCIDENT REPORTS FOR THE STATE OF FLORIDA - OCTOBER 2014

Geodataset Name:       SIR_OCT14
Geodataset Type:       SHAPEFILE
Geodataset Feature:    Point
Feature Count:         3570
GENERAL DESCRIPTION:
This dataset contains Subsidence Incident Reports for the State of Florida. A Subsidence Incident / Sinkholes are closed depressions in areas underlain by soluble rock such as limestone, dolostone, gypsum, or salt. Sinkholes form when surface sediments subside into underground voids created by the dissolving action of groundwater in the underlying bedrock. Other subterranean events can cause holes, depressions or subsidence of the land surface that may mimic sinkhole activity. These include subsurface expansive clay or organic layers which compress as water is removed, collapsed or broken sewer and drain pipes or broken septic tanks, improperly compacted soil after excavation work, and even buried trash, logs and other debris. Commonly, a reported depression is not verified by a licensed professional geologist to be a true sinkhole, and the cause of subsidence is not known. Such an event is called a subsidence incident. The Florida Geological Survey maintains and provides a downloadable database of reported subsidence incidents statewide. While this data may include some true sinkholes, the majority of the incidents have not been field-checked and the cause of subsidence is not verified. This dataset is an update to the FGDL layer SIR_AUG11.shp
DATA SOURCE(S):                    Florida Department of Environmental Protection, Florida Geological Survey
SCALE OF ORIGINAL SOURCE MAPS:     Varies
GEODATASET EXTENT:                 State of Florida
PUBLICATION DATE: 20141024 TIME PERIOD OF CONTENT: Begin Date: 20020502 End Date: 20141024 DOWNLOAD LINK: http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES:

Datafile Name: SIR_OCT14.DBF
ITEM NAME WIDTH TYPE
OBJECTID
4 OID
Shape
4 Geometry
REF_NUM
254 String
ADDED_BY
254 String
DATE_ADD
36 Date
DATE_REV
36 Date
EVENT_DATE
36 Date
EVT_ADDR
254 String
TRUE_SINK
254 String
LONGDD
8 Double
LATDD
8 Double
COUNTY
254 String
TWNSHP
4 Integer
TWNSHP_D
254 String
RANGE
4 Integer
RANGE_D
254 String
SECTION
4 Integer
QTRSECT1
254 String
QTRSECT2
254 String
ACCURACY
50 String
RPT_SOURCE
254 String
RPT_PHONE
254 String
RPT_NAME
254 String
OSTREET
254 String
OCITY
254 String
OZIP
4 Integer
SIZDIM
254 String
SINSHAPE
254 String
SINLNGTH
8 Double
SINWIDTH
8 Double
SINDEPTH
8 Double
SLOPE
4 Integer
WATSIN
254 String
WATBLS
4 Integer
LIMVIS
254 String
CAVVIS
254 String
SUBRATE
254 String
PROPDAM
254 String
REPAIR_S
50 String
DRAINSTR
254 String
SOILTYPE
254 String
COMMENTS
254 String
ACCESS_
254 String
COMMENTS_2
254 String
WITNAM
254 String
WITADDRE
254 String
WITCTZIP
254 String
WITPHONE
254 String
EM_Hard_Co
50 String
Pre_Collap
50 String
LandUseCod
50 String
Topography
50 String
Triggers_1
50 String
DESCRIPT
60 String
FGDLAQDATE
36 Date
AUTOID
4 Integer

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item
Item Description
OBJECTID Internal feature number.

Shape Feature geometry.

REF_NUM FGS/FSRI Assigned Reference Number

ADDED_BY Initials of staff member who compiled and input subsidence incident report information

DATE_ADD Date information added to the database

DATE_REV Date information revised in the database

EVENT_DATE Date on which the feature was first observed and documented.

EVT_ADDR Address where feature occurred

TRUE_SINK Is the event a true sinkhole?

LONGDD Longitude in WGS84 Decimal Degrees.

LATDD Latitude in WGS84 Decimal Degrees.

COUNTY County Name

TWNSHP Township

TWNSHP_D Township Direction

RANGE Range

RANGE_D Range Direction

SECTION Section

QTRSECT1 Quarter Section 1

QTRSECT2 Quarter Section 2

ACCURACY Accuracy

RPT_SOURCE Entity / organization that first reported the subsidence incident feature, if applicable

RPT_PHONE Phone number associated with the source of the report

RPT_NAME Name of individual within the reporting organization who fielded the incident report

OSTREET Owner's address at time of occurrence

OCITY Owner's city at time of occurrence

OZIP Owner's zip code at time of occurrence

SIZDIM How were dimensions of subsidence feature determined (E=estimated, M=Measured)

SINSHAPE Shape of subsidence feature (E=elliptical, C=circular)

SINLNGTH Length (longest side) of feature (FT)

SINWIDTH Width (shortest side) of feature (FT)

SINDEPTH Depth (ground surface to bottom) of feature (FT)

SLOPE Side slope angle of event (measured angle of incline)

WATSIN Is water visible in the feature?

WATBLS Ground surface to top of water in feature (FT)

LIMVIS Is limestone visible in feature?

CAVVIS Is a cave or fracture visible in feature?

SUBRATE What is the rate of subsidence of feature? (Lookup table - SUBRATE worksheet)

PROPDAM Was there any structure damage associated with the feature?

REPAIR_S Repair Status

DRAINSTR Are there any drainage structures within close distance to feature?

SOILTYPE Soil type where the feature occurred

COMMENTS Comments pertaining to feature or updates

ACCESS_ No description

COMMENTS_2 More comments pertaining to feature or updates

WITNAM Witness name

WITADDRE Witness address

WITCTZIP Witness city and zip code

WITPHONE Witness phone

EM_Hard_Co EM Hard Co - No Description Available.

Pre_Collap Pre Collapse State

LandUseCod Land Use Code

Topography Topography of area

Triggers_1 What could have triggered subsidence.

DESCRIPT Based on "SIR REFERENCE NUMBER: " & [REF_NUM]

FGDLAQDATE The date FGDL acquired the data from the Source.

AUTOID Unique ID added by GeoPlan


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.
Subsidence Incident Reports
Sinkholes are closed depressions in areas underlain by soluble rock such as limestone, dolostone, gypsum, 
or salt. Sinkholes form when surface sediments subside into underground voids created by the dissolving 
action of groundwater in the underlying bedrock.

Other events that can cause holes, depressions or subsidence of the land surface that may mimic sinkhole 
activity include:

-> subsurface expansive clay or organic layers which compress as water is removed,
-> collapsed or broken sewer and drain pipes; broken septic tanks;
-> improperly compacted soil after excavation work; and
-> buried trash, logs and other debris.

Commonly, a reported depression is not verified by a Licensed Professional Geologist to be a true sinkhole, 
and the cause of subsidence is not known. Such an event is called a subsidence incident. The Florida 
Geological Survey maintains and provides a downloadable database of reported subsidence incidents 
statewide. While this data may include some true sinkholes, the majority of the incidents have not been 
field-checked and the cause of subsidence is not verified.
Source: http://www.dep.state.fl.us/geology/gisdatamaps/SIRs_database.htm

Florida Geological Survey General Disclaimer:

Geographic Information Systems (GIS) data and maps produced by the Florida Geological Survey (FGS), 
an office of the Florida Department of Environmental Protection (FDEP), are provided solely as a general 
reference for state geologic features, are not warranted for any other use or purpose, and are not intended 
to replace site-specific or use-specific investigations Use of FGS data and maps by an end-user for any 
purpose other than general reference shall free the FDEP and the FGS from any and all liability for outcomes 
resulting from unintended or inappropriate applications of FGS spatial data. Examples of such applications 
include but are not limited to the mapping of point data with respect to cadastral boundaries, the use of 
geologic data for engineering purposes, and the interpolation of results of broad-scale GIS modeled surfaces 
to local areas that may or may not be deemed geologically analogous.

As with all spatial data, the attributes and exact coordinates of features depicted in FGS maps, coverages 
and datasets are subject to inherent errors due to limitations in the resources and technology available to 
record data. Please keep in mind that older maps, projects, and data were developed using the best tools 
and knowledge available at the time, and that spatial data standards and the tools used to develop these 
data have improved significantly over the last several years. Existing maps and projects are sometimes 
updated and enhanced with new data of higher precision, and thus are subject to change. The FGS makes 
every effort to provide the most up-to-date and accurate geographic information possible, but cannot be held
liable for the use of outdated data regardless of whether more current data have been obtained, analyzed, 
or made available by the FGS or FDEP.

Any modifications of FGS spatial data or maps by end-users must be acknowledged and noted appropriately 
in all subsequent products and analysis, and any FDEP/FGS logos or author information must be removed 
from altered FGS products prior to distribution to any other individual or entity. All FGS spatial data and maps 
are distributed on an "as is" basis and end-users shall assume all risks concerning data quality, performance, 
and analytic results. The same shall also be true concerning the use of unpublished drafts of FGS products, 
which may not be distributed to other individuals or entities without prior FGS approval.

Comments and inquiries regarding FDEP/FGS spatial data, maps, projects, and other analysis are encouraged 
and the FGS asks to be notified of any documented errors or inaccuracies. As a professional courtesy, the 
FDEP/FGS asks that due credit be given when our data sets are utilized by other individuals or entities. 
Further, since some or all of the data yielded from each FGS project were developed using public funds, no 
proprietary rights may be attached to FGS products wholly or in part, nor may FGS products be sold to the U.S. 
Government or the Florida State Government as part of any procurement of products or services. By using FGS 
spatial data or maps for any purpose other than general reference, the end-user acknowledges all the 
aforementioned stipulations and absolves the FDEP/FGS completely of any responsibility for unintended or 
inappropriate usage. For questions, comments, or observations regarding FGS spatial datasets or maps, including 
questions concerning appropriate uses for specific datasets, please contact the FGS GIS analyst listed below.

Seth Bassett, GIS Analyst
Florida Geological Survey
903 W. Tennessee St., MS 720
Tallahassee, FL 32304-7716
(850) 617-0327
seth.bassett@dep.state.fl.us

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.

January 02, 2014
Source: http://www.dep.state.fl.us/geology/disclaimer.htm

To map the occurrence and spatial distribution of subsidence incidents in Florida.

Florida Department of Environmental Protection, Florida Geological Survey: 
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. 
Subsidence incident 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 subsidence incidents 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.

Florida Department of Environmental Protection, Florida Geological Survey: 
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. 
Subsidence incident 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 subsidence incidents 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.

Subsidence Incident Reports 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. Subsidence incident 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 
subsidence incidents 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.

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, Florida Geological Survey
Geology Topic - Sinkholes
http://www.dep.state.fl.us/geology/geologictopics/sinkhole.htm

FGS Subsidence Incident Reports
http://www.dep.state.fl.us/geology/gisdatamaps/SIRs_database.htm

DATA LINEAGE SUMMARY:
Subsidence_Incident_Reports_Oct24-2014_WGS84.shp Dataset Updated.
Process Date: 20141024

The GeoPlan Center downloaded the original dataset from the following Florida Department of Environmental Protection's (FDEP) - Florida Geological Survey (FGS) website on February 16th, 2015. http://www.dep.state.fl.us/geology/gisdatamaps/SIRs_database.htm Subsidence_Incident_Reports_Oct24-2014_WGS84.zip The dataset was originally called Subsidence_Incident_Reports_Oct24-2014_WGS84.shp The dataset was originally in the GCS_WGS_1984 projection. The dataset was reprojected from it's original projection GCS_WGS_1984 to the FGDL Albers projection. Using the following transformations: WGS_1984_(ITRF00)_To_NAD_1983 + NAD_1983_To_HARN_Florida The dataset was renamed to SIR_OCT14.shp The dataset Attribute table was upper cased. The field DESCRIPT was added based on "SIR REFERENCE NUMBER: " & [REF_NUM] Features with no DESCRIPT value were calculated to "NO DESCRIPT AVAILABLE" The field FGDLAQDATE was added and populated. Please Note: There is a 1.7m shift between this dataset and the SIR_AUG11.shp dataset. Process Date: 20150216
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, Florida Geological Survey
FGS
903 W. Tennessee St., MS 720
Tallahassee, FL
32304-7716


http://www.dep.state.fl.us/geology/gisdatamaps/SIRs_database.htm clint.kromhout@dep.state.fl.us Clint Kromhout

FGDL CONTACT:
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Abbr. Name:             FGDL
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