DIGITAL FLOOD INSURANCE RATE MAP DATABASE, POLK COUNTY, FLORIDA, USA

Dataset Identification:

Resource Abstract:
The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk Information And supporting data used to develop the risk data. The primary risk; classificatons used are the 1-percent-annual-chance flood event, the 0.2-percent- annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.
Citation
Title DIGITAL FLOOD INSURANCE RATE MAP DATABASE, POLK COUNTY, FLORIDA, USA
publication  Date   2012-02-02
presentationForm  FEMA-DFIRM-FINAL
cited responsible party - publisher
organisation Name  Federal Emergency Management Agency
Contact information
Address
, Washington, DC
cited responsible party - originator
organisation Name  Federal Emergency Management Agency
cited responsible party - originator
organisation Name  Atkins
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
URL: http://www.fema.gov/msc
Topic Category:  hydrology,environment,inland Waters,structure,transportation,elevation
Keywords:
Theme keywords (theme):
DFIRM
FIRM
FEMA Flood Hazard Zone
DFIRM Database
Special Flood Hazard Area
Digital Flood Insurance Rate Map
CBRS
Coastal Barrier Resources System
Riverine Flooding
Coastal Flooding
NFIP
Base Flood Elevation
SFHA
Flood Insurance Rate Map
Floodway
thesaurus name >
Title FEMA NFIP Topic Category
Location keywords:
REGION 04
STATE FL
COUNTY POLK
COUNTY-FIPS 105
COMMUNITY Countywide
FEMA-CID 12105C
thesaurus name >
Title none
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 Flood Disaster Protection Act of 1973. 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 coverage offered through the NFIP. The DFIRM Database presents the flood risk information depicted on the FIRM in a digital format suitable for use in electronic mapping applications. The DFIRM database is a subset of the Digital FIS database that serves to archive the information collected during the FIS.
Resource language:  eng; USA
Resource progress code:  completed
Resource Maintenance Information
maintenance or update frequency:  irregular
Constraints on resource usage:
Constraints
Use limitation statement:
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.
Constraints on resource usage:
Legal Constraints
use constraint:  otherRestrictions
Other constraints
Use Constraints: The hardcopy FIRM and the accompanying FISs are the official designation of SFHAs and Base Flood Elevations (BFEs) for the NFIP. For the purposes of the NFIP, changes to the flood risk information published by FEMA may only be performed by FEMA and through the mechanisms established in the NFIP regulation (44 CFR Parts 59-78). These digital data are produced in conjunction with the hardcopy FIRMs and generally match the hardcopy map exactly. However the hardcopy flood maps and flood profiles are the authoritative documents for the NFIP. Acknowledgement of FEMA would be appreciated in products derived from these data.
Constraints on resource usage:
Legal Constraints
Access Constraints  otherRestrictions
Other constraints
Access Constraints: None
Spatial representation type code:  vector
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude  -82.6249999999999
eastBoundLongitude  -80.6249999999999
northBoundLatitude  28.8750000000001
southBoundLatitude  27.1250000000001
Temporal Extent
2012-02-02
point of contact - pointOfContact
organisation Name  Federal Emergency Management Agency
position Name Federal Insurance and Mitigation Administration
Contact information
Telephone
Voice 1-877-336-2627
Address
500 C Street S.W., Washington, District of Columbia, 20472 Country USA
electronic Mail Address www.fema.gov/msc
Back to top:

Vector spatial representation information

Geometric Objects
geometric Object Type  POINT STRING GT-POLYGON COMPOSED OF CHAINS
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Coverage description

Type of coverage content 
Cell value attribute description:  
Back to top

Content information: feature catalog description

Included With Dataset  true
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Feature Types  
Back to top

Scope of quality information
scope level  dataset
Resource lineage description
source
source description  Source Contribution: S_FLD_HAZ_ARSource Type PAPER
source citation
Title REVISED EFFECTIVE FLOODING
publication  Date   2002-02-28
presentationForm  mapDigital
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEMA
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEMA
Resource extent
Temporal Extent
2002-02-28
source
source description  Source Contribution: S_FLD_HAZ_ARSource Type PAPER
source citation
Title REVISED EFFECTIVE FLOODING
publication  Date   2006-05-19
presentationForm  mapDigital
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEMA
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEMA
Resource extent
Temporal Extent
2006-05-19
source
source description  Source Contribution: S_FIRM_PANSource Type DIGITAL
source citation
Title PANEL LAYOUT
publication  Date   2010-05-28
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  PBS&J
Contact information
Address
, BELTSVILLE, MD
cited responsible party - originator
organisation Name  PBSJ
Resource extent
Temporal Extent
2010-05-28
source
source description  Source Contribution: S_PERM_BMKSource Type Online
source citation
Title PERMANENT BENCHMARKS
publication  Date   2001-01-01
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  NATIONAL GEODETIC SURVEY
Contact information
Address
, SILVER SPRING, MD
cited responsible party - originator
organisation Name  NATIONAL GEODETIC SURVEY
Resource extent
Temporal Extent
2001-01-01
source
source description  Source Contribution: S_QUAD_INDEXSource Type Online
source citation
Title 7.5 MINUTE QUADRANGLE GRID
publication  Date   1999-01-01
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  UNITED STATES GEOLOGICAL SURVEY
Contact information
Address
, RESTON, VA
cited responsible party - originator
organisation Name  U.S. GEOLOGICIAL SURVEY
Resource extent
Temporal Extent
1999-01-01
source
source description  Source Contribution: S_POL_LNSource Type Online
source citation
Title FLORDIA STATE FOREST
publication  Date   2004-04-30
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FLORDIA DIVISION OF FORESTRY
Contact information
Address
, TALLAHASSEE, FL
cited responsible party - originator
organisation Name  FLORDIA DIVISION OF FORESTRY
Resource extent
Temporal Extent
2004-04-30
source
source description  Source Contribution: S_WTRSHED_ARSource Type Online
source citation
Title POLK COUNTY WATERSHED BOUNDARIES
publication  Date   2010-08-01
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  SWFWMD and SFWMD
Contact information
Address
, BARTOW, FL
cited responsible party - originator
organisation Name  SWFWMD and SFWMD
Resource extent
Temporal Extent
2010-08-01
source
source description  Source Contribution: S_FLD_HAZ_ARSource Type PAPER
source citation
Title REVISED EFFECTIVE FLOODING
publication  Date   2003-02-20
presentationForm  mapDigital
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEMA
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEMA
Resource extent
Temporal Extent
2003-02-20
source
source description  Source Contribution: S_POL_LNSource Type Online
source citation
Title FLORDIA STATE PARKS
publication  Date   2006-07-01
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FLORDIA DEPARTMENT OF ENVIRONMENTAL PROTECTION
Contact information
Address
, TALLAHASSEE, FL
cited responsible party - originator
organisation Name  FLORDIA DEPARTMENT OF ENVIRONMENTAL PROTECTION
Resource extent
Temporal Extent
2006-07-01
source
source description  Source Contribution: S_WTR_AR S_WTR_LNSource Type Online
source citation
Title POLK COUNTY WATER BODIES
publication  Date   2010-06-05
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  POLK COUNTY GIS
Contact information
Address
, BARTOW, FL
cited responsible party - originator
organisation Name  POLK COUNTY GIS
Resource extent
Temporal Extent
2010-06-05
source
source description  Source Contribution: S_TRNSPORT_LNSource Type Online
source citation
Title POLK COUNTY RAILROADS
publication  Date   2007-01-01
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEDERAL RAILROAD ADMINISTRATION
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEDERAL RAILROAD ADMINISTRATION
Resource extent
Temporal Extent
2007-01-01
source
source description  Source Contribution: S_TRNSPORT_LNSource Type Online
source citation
Title POLK COUNTY ROADS
publication  Date   2008-01-01
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  POLK COUNTY EMERGENCY MANAGMENT E-911
Contact information
Address
, BARTOW, FL
cited responsible party - originator
organisation Name  POLK COUNTY EMERGENCY MANAGMENT E-911
Resource extent
Temporal Extent
2008-01-01
source
source description  Source Contribution: S_BASE_INDEXSource Type Online
source citation
Title AERIAL IMAGE
publication  Date   2007-03-05
presentationForm  mapDigital
other Citation Details  NONE
cited responsible party - publisher
organisation Name  WOOLPERT, INC.
Contact information
Address
, ORLANDO, FL
cited responsible party - originator
organisation Name  WOOLPERT, INC.
Resource extent
Temporal Extent
2006-01-26
source
source description  Source Contribution: S_BFE S_PROFIL_BASLN S_FLD_HAZ_ARSource Type Paper
source citation
Title EFFECTIVE FLOOD HAZARD DATA
publication  Date   2000-12-20
presentationForm  mapDigital
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEMA
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEMA
Resource extent
Temporal Extent
2000-12-20
source
source description  Source Contribution: S_XSSource Type Paper
source citation
Title OSCEOLA COUNTY FLOOD INSURANCE STUDY
publication  Date   2000-12-20
presentationForm  mapDigital
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEMA
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEMA
Resource extent
Temporal Extent
2000-12-20
source
source description  Source Contribution: S_WTR_AR S_WTR_LNSource Type Online
source citation
Title POLK COUNTY WATER BODIES
publication  Date   2006-05-01
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  UNITED STATES GEOLOGICAL SURVEY
Contact information
Address
, RESTON, VA
cited responsible party - originator
organisation Name  U.S. GEOLOGICIAL SURVEY
Resource extent
Temporal Extent
2006-05-01
source
source description  Source Contribution: S_LOMRSource Type PAPER
source citation
Title REVISED EFFECTIVE FLOODING
publication  Date   2008-03-19
presentationForm  RASTER DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEMA
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEMA
Resource extent
Temporal Extent
2008-03-19
source
source description  Source Contribution: S_LOMRSource Type PAPER
source citation
Title REVISED EFFECTIVE FLOODING
publication  Date   2001-12-28
presentationForm  RASTER DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEMA
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEMA
Resource extent
Temporal Extent
2001-12-28
source
source description  Source Contribution: S_POL_LNSource Type Online
source citation
Title U.S. MILITARY INSTALLATIONS
publication  Date   2009-01-01
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  U.S. CENSUS BUREAU
Contact information
Address
, Washington, D.C.
cited responsible party - originator
organisation Name  U.S. CENSUS BUREAU
Resource extent
Temporal Extent
2009-01-01
source
source description  Source Contribution: S_PLSS_LN S_POL_LNSource Type DIGITAL
source citation
Title POLITICAL BOUNDARIES WITHIN POLK COUNTY
publication  Date   2010-05-28
presentationForm  mapDigital
other Citation Details  NONE
cited responsible party - publisher
organisation Name  POLK COUNTY GIS
Contact information
Address
, BARTOW, FL
cited responsible party - originator
organisation Name  POLK COUNTY GIS
Resource extent
Temporal Extent
2010-05-28
source
source description  Source Contribution: S_FLD_HAZ_ARSource Type Online
source citation
Title UPDATED FLOOD HAZARD AREAS
publication  Date   2009-08-01
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  PBSJ
Contact information
Address
, TAMPA, FL
cited responsible party - originator
organisation Name  PBSJ
Resource extent
Temporal Extent
2009-08-01
source
source description  Source Contribution: S_TRNSPORT_LNSource Type Online
source citation
Title POLK COUNTY AIRPORTS
publication  Date   2009-01-01
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEDERAL AVIATION ADMINISTRATION
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEDERAL AVIATION ADMINISTRATION
Resource extent
Temporal Extent
2009-01-01
source
source description  Source Contribution: S_FLD_HAZ_ARSource Type PAPER
source citation
Title REVISED EFFECTIVE FLOODING
publication  Date   2010-06-17
presentationForm  RASTER DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEMA
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEMA
Resource extent
Temporal Extent
2010-06-17
source
source description  Source Contribution: S_FLD_HAZ_ARSource Type Online
source citation
Title POLK COUNTY UPDATED FLOODING- SOLIVITA DEVELOPMENT
publication  Date   2010-06-01
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  THIS UPDATED FLOODING INFORMATION IS FROM VHB, INC. PERTAINING TO THE SOLIVITA DEVELOPMENT LOCATED WITHIN POLK COUNTY, FL
cited responsible party - publisher
organisation Name  VANASSEE HANGEN BRUSTLIN, INC.
Contact information
Address
, ORLANDO, FL
cited responsible party - originator
organisation Name  VANASSEE HANGEN BRUSTLIN, INC.
Resource extent
Temporal Extent
2010-06-01
source
source description  Source Contribution: S_FLD_HAZ_ARSource Type Online
source citation
Title UPDATED FLOOD PLAINS FOR POLK COUNTY
publication  Date   2004-01-15
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  THIS DATA ON THEUPDATED FLOODPLAINS IS VIA A PERMIT TO THE SFWMD. PERMIT# 49-00094-S
cited responsible party - publisher
organisation Name  SOUTH FLORDIA WATER MANAGEMENT DISTRICT
Contact information
Address
, WEST PALM BEACH, FL
cited responsible party - originator
organisation Name  SOUTH FLORDIA WATER MANAGEMENT DISTRICT
Resource extent
Temporal Extent
2004-01-15
source
source description  Source Contribution: S_BFESource Type Online
source citation
Title BASE FLOOD ELEVATION LINES
publication  Date   2010-07-08
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  PBS&J
Contact information
Address
, BELTSVILLE, MD
cited responsible party - originator
organisation Name  PBS&J
Resource extent
Temporal Extent
2010-07-08
source
source description  Source Contribution: S_FLD_HAZ_ARSource Type PAPER
source citation
Title REVISED EFFECTIVE FLOODING
publication  Date   2009-08-31
presentationForm  RASTER DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEMA
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEMA
Resource extent
Temporal Extent
2009-08-31
source
source description  Source Contribution: S_NETWRK_ARC S_NETWRK_NODESource Type Online
source citation
Title HYDRALIC CROSS SECTIONS
publication  Date   2009-07-27
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  THESE ARE THE EQUAL TO THE CROSS SECTIONS IN THE FIS TEXT. THEY CAN BE REFERENCED IN ICPR HYDRAULIC MODEL FOR POLK COUNTY, FL. PREPARED FOR SOUTH FLORIDA WATER MANAGMENT DISTRICT.
cited responsible party - publisher
organisation Name  PBS&J
Contact information
Address
, TAMPA, FL
cited responsible party - originator
organisation Name  PBS&J
Resource extent
Temporal Extent
2009-07-27
source
source description  Source Contribution: S_PLSS_AR S_PLSS_LNSource Type DIGITAL
source citation
Title PUBLIC LAND SURVEY SYSTEM
publication  Date   2010-05-28
presentationForm  VECTOR DIGITIAL DATA
other Citation Details  NONE
cited responsible party - publisher
organisation Name  POLK COUNTY GIS
Contact information
Address
, BARTOW, FL
cited responsible party - originator
organisation Name  POLK COUNTY GIS
Resource extent
Temporal Extent
2010-05-28
source
source description  Source Contribution: S_FLD_HAZ_ARSource Type DIGITAL
source citation
Title HYDRIC SOILS DATA
publication  Date   2009-01-01
presentationForm  mapDigital
other Citation Details  AREAS THAT ARE PRONE TO FLOODING BASED ON HYDRIC SOIL TYPE.
cited responsible party - publisher
organisation Name  POLK COUNTY
Contact information
Address
, POLK COUNTY, FL
cited responsible party - originator
organisation Name  POLK COUNTY
Resource extent
Temporal Extent
2009-01-01
source
source description  Source Contribution: S_FLD_HAZ_ARSource Type PAPER
source citation
Title REVISED EFFECTIVE FLOODING
publication  Date   2003-12-22
presentationForm  mapDigital
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEMA
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEMA
Resource extent
Temporal Extent
2003-12-22
source
source description  Source Contribution: S_FLD_HAZ_ARSource Type PAPER
source citation
Title REVISED EFFECTIVE FLOODING
publication  Date   2003-11-19
presentationForm  mapDigital
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEMA
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEMA
Resource extent
Temporal Extent
2003-11-19
source
source description  Source Contribution: S_FLD_HAZ_ARSource Type PAPER
source citation
Title REVISED EFFECTIVE FLOODING
publication  Date   2007-05-29
presentationForm  mapDigital
other Citation Details  NONE
cited responsible party - publisher
organisation Name  FEMA
Contact information
Address
, WASHINGTON, D.C.
cited responsible party - originator
organisation Name  FEMA
Resource extent
Temporal Extent
2007-05-29
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy Report
evaluation Method Description  The DFIRM Database consists of countywide vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published hardcopy FEMA FIRM. The published effective FIRM and DFIRM are issued as the effective FIRM and DFIRM are issued as the official designation of the SFHAs. As such, they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Specifications for Flood Map Production Coordination Contractors. Horizontal accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of FEMA's DFIRM database was also /r/nperformed.
AbsoluteExternalPositionalAccuracy
name Of Measure Vertical Positional Accuracy Report
evaluation Method Description  The DFIRM Database consists of countywide vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and DFIRM are issued as the official designation of the SFHAs. As such, they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Specifications for Flood Map Production Coordination Contractors. Vertical accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of FEMA's DFIRM database was also performed.
Completeness Commission
evaluation Method Description  Data contained in the DFIRM Database files reflect the content of the source materials. Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. With new mapping, FEMA plans to maintain full detail in the spatial data it produces. However, older information is often transferred from existing maps where some generalization has taken place. 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 analyses of records of river flow, storm tides, and rainfall; information obtained through consultation with the communities; floodplain topographic surveys; and hydrological 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 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.
Completeness Omission
evaluation Method Description  Data contained in the DFIRM Database files reflect the content of the source materials. Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. With new mapping, FEMA plans to maintain full detail in the spatial data it produces. However, older information is often transferred from existing maps where some generalization has taken place. 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 analyses of records of river flow, storm tides, and rainfall; information obtained through consultation with the communities; floodplain topographic surveys; and hydrological 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 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.
ConceptualConsistency
measure Description  When FEMA revises a FIS, adjacent studies are checked to ensure agreement between flood elevations at the boundaries. Likewise, flood elevations at the confluence of streams studied independently are checked to ensure agreement at the confluence. The FIRM and the FIS are developed together and care is taken to ensure that the elevations and other features shown on the flood profiles in the FIS agree with the information shown on the FIRM. However, the elevations as shown on the FIRM are rounded whole-foot elevations. They must be shown so that a profile recreated from the elevations on the FIRM will match the FIS profiles within one half of one foot.</

Resource distribution information

Distributor
distributor contact - distributor
organisation Name  FEMA, Map Service Center
Contact information
Telephone
Voice 1-877-336-2627
Address
7390 Coca Cola Drive, Hanover, Maryland, 21076 Country USA
electronic Mail Address http://www.fema.gov/msc
contact Instructions
Data requests must include the full name of the community or county and the FIRM panel number(s) or the 7.5-minute series quadrangle sheet area(s) covered by the request.
Standard ordering process
fees Contact Distributor
Ordering Instructions  Ordering Instructions: Printed DFIRMs that match this data set are available from FEMA at the Map
Format
Format name ESRI Shapefile
Format version 
Format
Format name MIF
Format version 
Format
Format name ARCE
Format version 
Format
Format name ESRI Shapefile
Format version 
Format
Format name MIF
Format version 
Format
Format name ARCE
Format version 
Digital Transfer Options
Linkage for online resource
URL: http://www.fema.gov/msc
Linkage for online resource
URL: http://www.fema.gov/msc
Linkage for online resource
URL: http://www.fema.gov/msc
Digital Transfer Options
Medium of distribution
name  cdRom
medium Format  ISO-9660 ISO-9660 ISO-9660

Metadata data stamp:  2012-02-02
Resource Maintenance Information
maintenance or update frequency:  annually
notes: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2012-06-20T17:21:00 version of the FGDC RSE to ISO 19115-2 transform.
Metadata contact - pointOfContact
individual Name FEMA Representative
organisation Name  Federal Emergency Management Agency
position Name Federal Insurance and Mitigation Administration
Contact information
Telephone
Voice 1-877-336-2627
Address
500 C Street S.W., Washington, District of Columbia, 20472 Country USA
electronic Mail Address www.fema.gov/msc
Metadata scope code  dataset
Metadata language  eng; USA
Metadata character set encoding:   utf8
Metadata standard for this record:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
standard version:  ISO 19115-2:2009(E)
Metadata record identifier:  4914dfbd-f842-4ece-8027-8543913b92db

Metadata record format is ISO19139-2 XML (MI_Metadata)