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Q3 Flood Data, CLARK COUNTY, KENTUCKY

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:Federal Emergency Management Agency
Publication_Date:19970000
Title:
Q3 Flood Data, CLARK COUNTY, KENTUCKY
Geospatial_Data_Presentation_Form:Map
Publication_Information:
Publication_Place:Washington, DC
Publisher:Federal Emergency Management Agency
Other_Citation_Details:
Q3_Filename: C21049.DLG Metadata_Filename: c21049.dlm
Online_Linkage:http://hazards.fema.gov/metadata/data/Q3/C21049.E00.zip
Description:
Abstract:
The Q3 Flood Data are derived from the Flood Insurance Rate
Maps (FIRMs) published by the Federal Emergency Management Agency (FEMA).
The file is georeferenced to the earth's surface using the Universal
Transverse Mercator (UTM) projection and a zonal coordinate system
(units in meters).  Specifications for the horizontal control of Q3
Flood Data files are consistent with those required for mapping at a
scale of 1:24000.
Purpose:
The FIRM is the basis for floodplain management, mitigation,
and insurance activities for the National Flood Insurance Program
(NFIP).  Insurance applications include enforcement of the
mandatory purchase requirement of the Flood Disaster Protection Act,
which "requires the purchase of flood insurance by property owners
who are being assisted by Federal programs or by Federally supervised,
regulated, or insured agencies or institutions in the acquisition
or improvement of land facilities located or to be located in
identified areas having special flood hazards" (Section 2 (b) (4)
of the 1973 Flood Disaster Protection Act).  In addition to the
identification of Special Flood Hazard Areas (SFHAs), the risk zones
shown on the FIRMs are the basis for the establishment of premium rates
for flood insurance coverage offered through the NFIP.
Q3 Flood Data files convey certain key features from the existing
hard copy FIRM.  Edge-matching errors, overlaps and deficiencies in
coverage, and similar problems are not corrected during digitizing or
post-processing.  The Q3 Flood Data files are inteded to provide users
with automated flood risk data that may be used to locate SFHAs.  More
detailed information may be obtained from the paper FIRM.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:19970000
Currentness_Reference:
Publication date
Status:
Progress:Complete
Maintenance_and_Update_Frequency:Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -84.375
East_Bounding_Coordinate: -83.875
North_Bounding_Coordinate: 38.125
South_Bounding_Coordinate: 37.75
Keywords:
Theme:
Theme_Keyword_Thesaurus:None
Theme_Keyword:FEMA Flood Hazard Zones
Theme_Keyword:Q3 Flood Data
Theme_Keyword:Q3 Coverage
Theme_Keyword:Special Flood Hazard Areas
Theme_Keyword:Digital Flood Insurance Rate Maps
Place:
Place_Keyword_Thesaurus:None
Place_Keyword:CLARK COUNTY
Place_Keyword:KENTUCKY
Place_Keyword:USA
Access_Constraints:None
Use_Constraints:
None. Acknowledgment of FEMA would be appreciated in
products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Federal Emergency Management Agency, Mitigation Directorate
Contact_Address:
Address_Type:mailing address
Address:
500 C Street, S.W.
City:Washington
State_or_Province:District of Columbia
Postal_Code:20472
Contact_Voice_Telephone:1-800-358-9616
Native_Data_Set_Environment:
Original data development environment varies. Additional manipulation, topological structuring, and attribute encoding were undertaken using ARC/INFO software on a UNIX-based workstation.
Cross_Reference:
Citation_Information:
Originator:Federal Emergency Management Agency
Publication_Date:19970000
Title:
Q3 DLG, CLARK COUNTY, KY
Geospatial_Data_Presentation_Form:Map
Publication_Information:
Publication_Place:Washington, DC
Publisher:Federal Emergency Management Agency
Cross_Reference:
Citation_Information:
Originator:Federal Emergency Management Agency
Publication_Date:19970000
Title:
Q3 Raster FIRM, CLARK COUNTY, KY
Geospatial_Data_Presentation_Form:Map
Publication_Information:
Publication_Place:Washington, DC
Publisher:Federal Emergency Management Agency
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The Q3 Flood Data are countywide vector
files derived from FEMA FIRMs.  The attribute definitions may be found
in the "Q3 Flood Data Specifications".  Attribute accuracy was tested by
manual comparison of source graphic with hardcopy plots and a symbolized
display on an interactive computer graphic system.  Selected attributes
that could not be visually verified were individually queried.  In
addition, an ARC/INFO Arc Macro Language (AML) software program was
applied to the dataset to test the attributes against a master set
of valid attributes for the specific data category and a complete set
of valid attribute combinations.  (See also Entity Attribute Information.)
Logical_Consistency_Report:
Polygon and chain-node topology are present.
Certain node-area-line relationships are collected or generated to
satisfy topological requirements.  Some of these requirements
include the following: lines must begin and end at nodes, lines must
connect to each other at nodes, lines do not extend through nodes, left
and right areas are defined for each line segment and are consistent
throughout the files, and the lines representing the limits of
the file neatlines are free of gaps.  Tests of logical
consistency were performed by ARC/INFO software modules.  Check
plots were made to test for leaks in all internal polygons.
Completeness_Report:
Data completeness for Q3 Flood Data files
reflects the content of the source graphic.  Features may have been
eliminated or generalized on the source graphic, due to scale and
legibility constraints.
Flood risk data are developed for communities participating in
the NFIP for use in insurance rating and for floodplain
management.  Flood hazard areas are determined using statistical
analysis of records of river flow, storm tides, and rainfall;
information obtained through consultation with the communities:
floodplain topographic surveys; and hydrologic and hydraulic
analysis.  Both detailed and approximate analyses are employed.
Generally, detailed analyses are used to generate flood risk data
only for developed or developing areas of communities.  For
undeveloped areas where little or no development is expected to
occur, FEMA uses approximate analyses to generate flood risk
data.  Typically, only drainage areas that are greater than one
square mile are studied.
Q3 Flood Data may be derived from DFIRM-DLGs, from FIRM-DLGs, or from
FIRMs digitized previously for emergency applications, or they may be newly
created.  In Q3 Flood Data derived from older data sets, certain items
may not have been captured or may have been captured differently from
the current Q3 Flood Data specifications.
In some cases, preliminary FIRM data have been included in the Q3
Flood Data files.  These data have been provided to the community for
review and comment, and may be subject to change before their
final publication date.  In addition, in some cases, areas designated
as Flood Prone Areas on maps prepared by USGS and FIA have been included
in the Q3 Flood Data files.  These areas were delineated based on
available information of past floods and are described by a unique
attribute code that distinguishes them from areas of 1% annual chance
flooding derived from FIRMs.
FIRMs continually undergo revisions and updates.  Some of these
revisions are effected by letter (Letter of Map Revision [LOMR],
Letter of Map Amendment [LOMA]).  Q3 Flood Data may not reflect
the most current information or information that is not mappable
at the publication scale of the FIRM.  To obtain the latest information,
contact the address listed under distributor.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Specifications for the
digitizing of FIRMs to create Q3 Flood Data are consistent
with those requirements for mapping at a scale of 1:24000.
Horizontal control of Q3 Flood Data was established using USGS
quadrangle maps at 1:24000 or other standard scales.  Users should
assess the horizontal positional accuracy of the Q3 Flood Data with
regard to the selected base map sources and the requirements
of their application.  With increased frequency,  large-scale spatial
data sets are becoming widely available for computer-based geographic
information systems.  Q3 Flood Data may be used in combination with
other digital spatial data; however, users should be aware that scalar
enlargements do not enhance the relative accuracy of the Q3 Flood
Data.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:Federal Emergency Management Agency
Publication_Date:19860703
Title:
Flood Insurance Rate Map, CITY OF WINCHESTER, KY
Geospatial_Data_Presentation_Form:map
Publication_Information:
Publication_Place:Washington, DC
Publisher:Federal Emergency Management Agency
Other_Citation_Details:
Panel: 2100560000 ; Denominator_of_Source_Scale: NA Panel: 2100560001B ; Denominator_of_Source_Scale: 6000 Panel: 2100560002B ; Denominator_of_Source_Scale: 6000
Source_Scale_Denominator:24000
Type_of_Source_Media:paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:19860703
Source_Currentness_Reference:
Effective Date
Source_Citation_Abbreviation:
FIRM1
Source_Contribution:
spatial and attribute information
Source_Information:
Source_Citation:
Citation_Information:
Originator:Federal Emergency Management Agency
Publication_Date:19861204
Title:
Flood Insurance Rate Map, CLARK COUNTY(Unincorporated Areas), KY
Geospatial_Data_Presentation_Form:map
Publication_Information:
Publication_Place:Washington, DC
Publisher:Federal Emergency Management Agency
Other_Citation_Details:
Panel: 2102780000 ; Denominator_of_Source_Scale: NA
Source_Scale_Denominator:24000
Type_of_Source_Media:paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:19861204
Source_Currentness_Reference:
Effective Date
Source_Citation_Abbreviation:
FIRM2
Source_Contribution:
spatial and attribute information
Source_Information:
Source_Citation:
Citation_Information:
Originator:Federal Emergency Management Agency
Publication_Date:19861204
Title:
Flood Insurance Rate Map, CLARK COUNTY (Unincorporated Areas), KY
Geospatial_Data_Presentation_Form:map
Publication_Information:
Publication_Place:Washington, DC
Publisher:Federal Emergency Management Agency
Other_Citation_Details:
Panel: 2102780018B ; Denominator_of_Source_Scale: 6000 Panel: 2102780020B ; Denominator_of_Source_Scale: 12000 Panel: 2102780025B ; Denominator_of_Source_Scale: 24000 Panel: 2102780050B ; Denominator_of_Source_Scale: 24000 Panel: 2102780056B ; Denominator_of_Source_Scale: 6000 Panel: 2102780057B ; Denominator_of_Source_Scale: 6000 Panel: 2102780058B ; Denominator_of_Source_Scale: 6000 Panel: 2102780059B ; Denominator_of_Source_Scale: 6000 Panel: 2102780075B ; Denominator_of_Source_Scale: 24000 Panel: 2102780100B ; Denominator_of_Source_Scale: 24000 Panel: 2102780125B ; Denominator_of_Source_Scale: 24000
Source_Scale_Denominator:24000
Type_of_Source_Media:paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:19861204
Source_Currentness_Reference:
Effective Date
Source_Citation_Abbreviation:
FIRM3
Source_Contribution:
spatial and attribute information
Process_Step:
Process_Description:
Q3 Flood Data were produced by either scanning and
vectorizing or manually digitizing a hardcopy version of the graphic
materials.  The scanning and vectorization process captured the digital
data as raster data that were vectorized and attributed on an
interactive editing station.  The manual digitizing process used a
digitizing table to capture the digital data; attribution was performed
either as the data were digitized or on an interactive edit station after
the digitizing was completed.  The determination of the production methodology
was based on various criteria, including availability of production systems.
Four to nine control points per FIRM panel were used for registration
during manual digitizing.  A projective	transformation was performed
on the coordinates used in the data collection and editing systems to
register the digital data to the Universal Transverse Mercator (UTM)
grid coordinates.  An ARC/INFO coverage of the Q3 Flood Data was
generated and used to create the Q3-DLG file.  The Q3 Flood
Data were checked for position and attribute accuracy by comparing
plots of the digital data to the source graphic and by symbolized
display on an interactive computer system.  Selected attributes that
could not be visually verified were individually queried. In addition,
an ARC/INFO  Arc Macro Language (AML) software program was applied to
the dataset to test the attributes against a master set of valid attributes
for the specific data category and a complete set of valid attribute
combinations.  Source graphics were revised to reflect updates
effected by Letters of Map Change (Letter of Map Revision [LOMR],
Letter of Map Amendment [LOMA]).  These revisions were included in
the Q3 Flood Data if they were mappable at the publication scale of
the source graphic.  Once final, the ARC/INFO coverage is projected into a
geographic grid system, using decimal degree latitude and longitude
coordinates and then converted into an ARC/INFO Export file.
Source_Used_Citation_Abbreviation:
FIRM1-FIRM3
Process_Date:19970101
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method:Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type:Point
Point_and_Vector_Object_Count:388
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type:String
Point_and_Vector_Object_Count:1056
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type:GT-polygon composed of chains
Point_and_Vector_Object_Count:389
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name:Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number:16
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method:coordinate pair
Coordinate_Representation:
Abscissa_Resolution:0.61
Ordinate_Resolution:0.61
Planar_Distance_Units:meters Geodetic Model
Geodetic_Model:
Horizontal_Datum_Name:North American Datum of 1927
Ellipsoid_Name:Clarke 1866
Semi-major_Axis:6378206.4
Denominator_of_Flattening_Ratio:294.98
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Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
In addition to locational and topological information, Q3 Flood Data elements are explicitly encoded using 14 MAJOR/MINOR code pairs which identify characteristics about items. Each item identifies characteristics about the Flood Hazard Area, COBRA, Floodway, Political Jurisdiction, Quadrangle, or FIRM panel. All polygon data elements are encoded with 14 feature characteristics.
Entity_and_Attribute_Detail_Citation:
The FEMA "Q3 Flood Data
Specifications" contains a detailed description of each attribute
code and a reference to other relevant information.   This document is available for download at http://www.fema.gov/msc/specs.htm
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:FEMA, Map Service Center
Contact_Address:
Address_Type:mailing address
Address:
6730 Santa Barbara Court
City:Baltimore
State_or_Province:Maryland
Postal_Code:21227-5832
Contact_Voice_Telephone:1-800-358-9616
Contact Instructions:
Data requests should include the full name of the
community or county and the Flood Insurance Rate Map panel number(s)
or the 7.5-minute quadrangle sheet area(s) covered by the request.
Distribution_Liability:
No warranty expressed or implied is made by FEMA
regarding the utility of the data on any other system nor shall the act
of distribution constitute any such warranty.  FEMA will warrant the
delivery of this product in a computer-readable format and will
offer appropriate adjustment of credit when the product is
determined unreadable by correctly adjusted computer input peripherals
or when the physical medium is delivered in damaged condition.  Requests
for adjustment of credit must be made within 90 days from the date of
this shipment from the ordering site.
Standard_Order_Process:
Non-digital_Form:
Printed Flood Insurance Rate Maps that match this data set are available from FEMA at the Map Service Center, cited above.
Fees:Contact Distributor
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name:DLG
Format_Version_Number:3
Format_Specification:
Optional
Digital_Transfer_Option:
Offline_Option:
Offline_Media:CD-ROM
Recording_Format:ISO 9660
Fees:Contact Distributor
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Metadata_Reference_Information:
Metadata_Date:20060118
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Federal Emergency Management Agency
Contact_Position:Mitigation Directorate
Contact_Address:
Address_Type:mailing address
Address:
500 C Street, S.W.
City:Washington
State_or_Province:District of Columbia
Postal_Code:20472
Contact_Voice_Telephone:1-800-358-9616
Metadata_Standard_Name:FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version:FGDC-STD-001-1998
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FEMA NFIP Metadata Stylesheet (adapted from the NPS and ESRI "FGDC Classic" stylesheets)