DIGITAL FLOOD INSURANCE RATE MAP DATABASE, LA PAZ COUNTY, ARIZONA AND INCORPORATED AREAS
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 State Plane 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, LA PAZ COUNTY, ARIZONA AND INCORPORATED AREAS
publication Date
2005-05-05
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
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 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
Spatial representation type code:
VECTOR AND RASTER
Processing environment:
Native Dataset Environment: Original data development environment varies. Finishing of the data is done using ESRI?s ARC/INFO
software.
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude
-114.766
eastBoundLongitude
-113.244
northBoundLatitude
34.376
southBoundLatitude
32.997
Temporal Extent
2005-05-05
point of contact
-
pointOfContact
organisation Name
Federal Emergency Management Agency
position Name Federal Insurance and Mitigation Administration
Contact information
Telephone
Voice 1-800-358-9616
Address
500 C Street, S.W., Washington, District of Columbia, 20472
Country USA
source description
Source Contribution: Spatial and attribute information for the index of USGS 7.5-Minute Series Topographic Map boundaries.Source
Type online
source citation
Title USGS 7.5-Minute Series Topographic Maps
publication Date
1999-01-01
presentationForm
DIGITAL VECTOR DATA
other Citation Details
USGS has mapped the county with 1:24,000 scale topographic maps (also referred to as 7.5 minute quadrangles). The entire county
was mapped by the late 1980?s. From the raster topographic maps, a vector index of the USGS topographic maps with its corresponding
tile identification number and name was created.
cited responsible party
-
publisher
organisation Name
U.S. Geological Survey
Contact information
Address
, Reston, VA
cited responsible party
-
originator
organisation Name
US Geological Survey
Resource extent
Temporal Extent
1999-01-01
source
source description
Source Contribution: Spatial and attribute information for the index of USGS DOQ boundaries.Source Type CD-ROM
source citation
Title Digital Orthophoto Quadrangle
publication Date
1992-05-13
presentationForm
DIGITAL VECTOR DATA
other Citation Details
The digital orthophoto quarter-quadrangle (DOQ) is a 1-meter ground resolution, quarter-quadrangle (3.75-minutes of latitude
by 3.75-minutes of longitude) image cast on the Universal Transverse Mercator Projection (UTM) on the North American Datum
of 1983 (NAD83), re-projected into NAD27. The imagery is based on panchromatic black and white (or color infra-red) NAPP or
NAPP-like photography. From the raster DOQs, a vector index is created.
cited responsible party
-
publisher
organisation Name
US Geological Survey
Contact information
Address
, Eros Data Center, Sioux Falls, SD
cited responsible party
-
originator
organisation Name
US Geological Survey
Resource extent
Temporal Extent
1992-05-13
source
source description
Source Contribution: Spatial and attribute information for permanent benchmarks.Source Type CD-ROM
source citation
Title Geodetic bench mark positions and descriptions.
publication Date
2004-01-01
presentationForm
mapDigital
other Citation Details
Geodetic data comprise the results of geodetic surveys to determine among other things, latitude, longitude, height, scale,
and orientation control. The NGS? final product is the geodetic data sheet. Geodetic data sheets are comprehensive summaries
of all the published information for a given geodetic reference point, including: the geographic position and/or height based
on the current reference datum, condition of the survey mark when it was last visited, a description of where the point is
located and how to reach it, and an explanation of the terms used in the data sheet.
cited responsible party
-
publisher
organisation Name
National Geodetic Survey
Contact information
Address
, Silver Springs, MD
cited responsible party
-
originator
organisation Name
National Geodetic Survey
Resource extent
Temporal Extent
2004-01-01
source
source description
Source Contribution: This dataset consists of the Township, Range, and Section grid lines.Source Type CD-ROM
source citation
Title PLSS GRIDLINES
publication Date
1988-01-01
presentationForm
mapDigital
other Citation Details
The data is created to serve as base information for use in GIS systems for a variety of planning and analysis purposes.
cited responsible party
-
publisher
organisation Name
Arizona State Land Department, Arizona Land Resources Information System
Contact information
Address
, Phoenix, AZ
cited responsible party
-
originator
organisation Name
Arizona State Land Department
Resource extent
Temporal Extent
1988-01-01
source
source description
Source Contribution: Spatial information for transportation, water lines, and other physical features.Source Type CD-ROM
source citation
Title Digital Orthophoto Quadrangle
publication Date
1992-05-13
presentationForm
DIGITAL VECTOR DATA
other Citation Details
The digital orthophoto quarter-quadrangle (DOQ) is a 1-meter ground resolution, quarter-quadrangle (3.75-minutes of latitude
by 3.75-minutes of longitude) image cast on the Universal Transverse Mercator Projection (UTM) on the North American Datum
of 1983 (NAD83), re-projected into NAD27. The imagery is based on panchromatic black and white (or color infra-red) NAPP or
NAPP-like photography. From the raster DOQs, a vector index is created.
cited responsible party
-
publisher
organisation Name
US Geological Survey
Contact information
Address
, Eros Data Center, Sioux Falls, SD
cited responsible party
-
originator
organisation Name
US Geological Survey
Resource extent
Temporal Extent
1992-05-13
source
source description
Source Contribution: Spatial and attribute information for political and jurisdictional boundariesSource Type CD-ROM
source citation
Title Base map data for La Paz County AZ
publication Date
presentationForm
mapDigital
other Citation Details
Locally supplied base map data in the form of vector data.
cited responsible party
-
publisher
organisation Name
La Paz County, AZ
Contact information
Address
, Parker, AZ
cited responsible party
-
originator
organisation Name
La Paz County, AZ
Resource extent
Temporal Extent
2005-01-01
source
source description
Source Contribution: Location of wilderness areas.Source Type CD-ROM
source citation
Title az_wilderness areas
publication Date
1992-01-01
presentationForm
mapDigital
other Citation Details
A statewide coverage of congressionally designated wilderness on land managed by the Bureau of Land Management in Arizona
cited responsible party
-
publisher
organisation Name
Arizona Bureau of Land Management
Contact information
Address
, Arizona State office, Bureau of Land Management
cited responsible party
-
originator
organisation Name
Arizona Bureau of Land Management
Resource extent
Temporal Extent
1992-01-01
source
source description
Source Contribution: Spatial information, miscellaneous public lands/political boundary locations.Source Type online
source citation
Title Digital Raster Graphic
publication Date
1996-05-02
presentationForm
DIGITAL VECTOR DATA
other Citation Details
The Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic map including the collar information, georeferenced
to the UTM grid.
cited responsible party
-
publisher
organisation Name
US Geological Survey
Contact information
Address
, Reston, VA
cited responsible party
-
originator
organisation Name
US Geological Survey
Resource extent
Temporal Extent
1996-05-02
source
source description
Source Contribution: Spatial and attribute information for floodplain information.Source Type paper and digital raster
source citation
Title Flood Boundary and Floodway Map
publication Date
1988-09-30
presentationForm
mapDigital
other Citation Details
Digitized features from effective Flood Boundary and Floodway Maps for La Paz County, Arizona Unincorporated Areas, dated
September 30, 1988 and September 19, 1984.
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
Resource extent
Temporal Extent
1988-09-30
source
source description
Source Contribution: Spatial and attribute information for floodplain information.Source Type paper and digital raster
source citation
Title Flood Insurance Rate Map
publication Date
2003-11-19
presentationForm
mapDigital
other Citation Details
Digitized features from effective Flood Insurance Rate Maps for La Paz County, Arizona Unincorporated Areas, dated November
19, 2003, March 04, 2002, September 30, 1988 and September 19, 1984.
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
Resource extent
Temporal Extent
2003-11-19
source
source description
Source Contribution: Spatial and attribute information for floodplain information.Source Type paper and digital raster
source citation
Title Flood Insurance Rate Map
publication Date
1998-12-22
presentationForm
mapDigital
other Citation Details
Digitized features from effective Flood Insurance Rate Map for Town of Quartzsite, La Paz County, Arizona dated December 22,
1998.
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
Resource extent
Temporal Extent
1998-12-22
source
source description
Source Contribution: Spatial and attribute information for floodplain widths, BFEs, cross sections and floodplain location.Source
Type paper
source citation
Title Flood Insurance Study, La Paz County, Arizona and Incorporated Areas
publication Date
2003-01-01
cited responsible party
-
originator
organisation Name
Federal Emergency Management Agency
Resource extent
Temporal Extent
2003-10-19
source
source description
Source Contribution: Spatial and attribute information for floodplain widths, BFEs, cross sections and floodplain location.Source
Type paper
source citation
Title Flood Restudy and update, Town of Ehrenberg, La Paz County, Arizona
publication Date
2004-12-01
presentationForm
mapDigital
other Citation Details
The hydrologic and hydraulic analyses for the Restudy of 10 linear miles of 8 stream reaches located within the area of Ehrenberg,
Arizona performed by URS Corporation, for FEMA, under contract No. EMF-2002-GR-0229 completed in December of 2004.
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
Resource extent
Temporal Extent
2004-12-01
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 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 countywide 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.
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.
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 FREE TEXT
organisation Name
Federal Emergency Management Agency
position Name Federal Insurance and Mitigation Administration
Contact information
Telephone
Voice 1-800-358-9616
Address
500 C Street, S.W., Washington, District of Columbia, 20472
Country USA