DIGITAL FLOOD INSURANCE RATE MAP DATABASE, BOONE COUNTY, IOWA, 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 classifications 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 Ohio North Stateplane projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at scales of 1:6000 and 1:12,000.
Citation
Title DIGITAL FLOOD INSURANCE RATE MAP DATABASE, BOONE COUNTY, IOWA, USA
publication  Date   2011-11-03
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  Federal Emergency Management Agency
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
URL: http://www.fema.gov/msc
Topic Category:  hydrology,environment,inlandWaters,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 7
STATE IA
COUNTY BOONE
COUNTY-FIPS 015
COMMUNITY And Incorporated Areas
FEMA-CID 19015C
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:  asNeeded
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 DFIRM 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 regulations (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
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude  -94.61
eastBoundLongitude  -93.25
northBoundLatitude  42.43
southBoundLatitude  41.58
Temporal Extent
2011-05-03
point of contact - pointOfContact
organisation Name  Federal Emergency Management Agency
Contact information
Telephone
Voice 1-800-358-9616
Address
500 C Street, S.W., Washington, District of Columbia, 20472 Country USA
electronic Mail Address http://www.fema.gov/msc
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

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  
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: Quad LayoutSource Type CD-ROM
representative resolution scale:
Scale denominator: 24000
source citation
Title USGS 1:24000 Topographic Quadrangle Series Index
publication  Date   1994-01-01
presentationForm  mapDigital
cited responsible party - publisher
organisation Name  United States Geological Survey
Contact information
Address
, Reston, VA
cited responsible party - originator
organisation Name  United States Geological Survey
Resource extent
Temporal Extent
1994-01-01
source
source description  Source Contribution: Orthophoto Imagery Base Index, Othrophoto mosaic of Boone County was obtained from 2009 National Agriculture Imagery Program (NAIP) Digital OrthophotoSource Type raster digitial data
representative resolution scale:
Scale denominator: 20000
source citation
Title Raster Digital Orthophoto Index
publication  Date   2009-01-01
presentationForm  mapDigital
cited responsible party - publisher
organisation Name  USDA FSA Aerial Photography Field Office
Contact information
Address
, Salt Lake City, Utah
cited responsible party - originator
organisation Name  USDA FSA National Agriculture Imagery Program (NAIP)
Resource extent
Temporal Extent
2009-01-01
source
source description  Source Contribution: FIRM Panel LayoutSource Type vector digital data
representative resolution scale:
Scale denominator: 20000
source citation
Title FIRM Panel Layout
publication  Date   2010-05-11
presentationForm  mapDigital
cited responsible party - publisher
organisation Name  Greenhorne & O'Mara (STARR)
Contact information
Address
, Laurel, MD
cited responsible party - originator
organisation Name  Greenhorne and O'Mara (STARR)
Resource extent
Temporal Extent
2010-05-11
source
source description  Source Contribution: Bench MarksSource Type Digital Download
representative resolution scale:
Scale denominator: 20000
source citation
Title Horizonal and Vertical Geodetic Control Data
publication  Date   2006-07-20
presentationForm  mapDigital
cited responsible party - publisher
organisation Name  National Oceanic Atmopsheric Administration
Contact information
Address
, Silver Spring, MD
cited responsible party - originator
organisation Name  National Geodetic Survey
Resource extent
Temporal Extent
1994-01-01
source
source description  Source Contribution: Political Boundaries (County)Source Type Digital Download
representative resolution scale:
Scale denominator: 24000
source citation
Title Iowa county Boundaries
publication  Date   1990-10-31
presentationForm  mapDigital
cited responsible party - publisher
organisation Name  Iowa Department of Natural Resources
Contact information
Address
, Iowa City, IA
cited responsible party - originator
organisation Name  Iowa Geological Survey
Resource extent
Temporal Extent
1991-01-01
source
source description  Source Contribution: Political Boundaries (Corporate)Source Type Digital Download
representative resolution scale:
Scale denominator: 24000
source citation
Title Incorporated Cities of Iowa 2000
publication  Date   2002-10-29
presentationForm  mapDigital
cited responsible party - publisher
organisation Name  Iowa Department of Natural Resources
Contact information
Address
, Iowa City, IA
cited responsible party - originator
organisation Name  Iowa Department of Natural Resources
Resource extent
Temporal Extent
2002-01-22
source
source description  Source Contribution: PLSS lines and PolygonsSource Type Digital Download
representative resolution scale:
Scale denominator: 24000
source citation
Title Public Land Survey System of Boone County, Iowa
publication  Date   1990-11-01
presentationForm  mapDigital
cited responsible party - publisher
organisation Name  Iowa Department of Natural Resources
Contact information
Address
, Iowa City, IA
cited responsible party - originator
organisation Name  Iowa Department of Natural Resources
Resource extent
Temporal Extent
1993-03-17
source
source description  Source Contribution: Water LinesSource Type Digital Download
representative resolution scale:
Scale denominator: 20000
source citation
Title NHD 24k Streams of Iowa
publication  Date   2006-01-01
presentationForm  VECTOR DIGTIAL DATA
cited responsible party - publisher
organisation Name  U.S. Geological Survey
Contact information
Address
, Reston, VA
cited responsible party - originator
organisation Name  United States Geologic Survey
Resource extent
Temporal Extent
2006-01-01
source
source description  Source Contribution: Water PolygonsSource Type Digital Download
representative resolution scale:
Scale denominator: 1200
source citation
Title Significant Publicly-Owned Lakes (SPOL) of Iowa
publication  Date   2003-01-09
presentationForm  mapDigital
cited responsible party - publisher
organisation Name  Iowa Department of Natural Resources
Contact information
Address
, Iowa City, Iowa
cited responsible party - originator
organisation Name  Andy Gorn
Resource extent
Temporal Extent
2005-08-26
source
source description  Source Contribution: Flood Hazard Lines and PolygonsSource Type Digital Download
representative resolution scale:
Scale denominator: 1200
source citation
Title Flood Hazard Data
publication  Date   2010-05-19
presentationForm  mapDigital
cited responsible party - publisher
organisation Name  Greenhorne & O'Mara (STARR)
Contact information
Address
, Laurel, MD
cited responsible party - originator
organisation Name  Greenhorne & O'Mara (STARR)
Resource extent
Temporal Extent
2010-05-19
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy Report
evaluation Method Description  The DFIRM Database consists of community based 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 Hazard Mapping Partners. 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 performed.
AbsoluteExternalPositionalAccuracy
name Of Measure Vertical Positional Accuracy Report
evaluation Method Description  The DFIRM Database consists of community based vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and DFIRM maps 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 Hazard Mapping Partners. 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 an 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 1-800-358-9616
Address
P.O. Box 1038, Jessup, Maryland, 20794-1038 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
Format
Format name ARCE
Format version 
Format
Format name ESRI Shapefile
Format version 
Format
Format name MapInfo Interchange file (MIF)
Format version 
Format
Format name ARCE
Format version 
Format
Format name ESRI Shapefile
Format version 
Format
Format name MapInfo Interchange file (MIF)
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  iso9660 iso9660 iso9660

Metadata data stamp:  2011-05-03
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 Rick Nusz
organisation Name  Federal Emergency Management Agency
Contact information
Telephone
Voice 1-770-220-5200
Address
9221 Ward Parkway, Suite 300, Kansas City, Missouri, 64114-3372 Country USA
electronic Mail Address miphelp@mapmodteam.com
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:  315adccc-e92b-4051-b9fc-0d524629a2fe

Metadata record format is ISO19139-2 XML (MI_Metadata)