FEMA Flood Hazard Zones for the Coquille River Basin

Citation:

Citation Information:

Originator: Federal Emergency Management Agency - National Flood
Publication Date: 091998
Title: FEMA Flood Hazard Zones for the Coquille River Basin
Edition: September 1998
Geospatial Data Presentation Form: Map
Publication Information:

Publisher:
Federal Emergency Management Agency - National Flood Insurance Program

Other Citation Details:
FEMA distributes digital FIRM data in two basic product levels. These are the DFIRM (including the hardcopy DFIRM
and the DFIRM-DLG) and the Q3 Flood Data. These two
products differ in their contents, quality, and intended
use. The Coverage on this DEMIS CD is an extract of the Q3
Flood Data.

Online Linkage: http://www.fema.gov
Larger Work Citation:

Citation Information:

Originator:
Federal Emergency Management Agency - National Flood Insurance Program

Publication Date: September 1998
Title: Q3 Flood Data Program
Publication Information:

Publisher:
Federal Emergency Management Agency - National Flood Insurance Program

Online Linkage: http://www.fema.gov

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 geographic projection and the decimal degree coordinate system. 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 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 (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 intended 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: 1988
Time of Day: Unknown

Currentness Reference: September1998

Status:

Progress: Complete
Maintenance and Update Frequency: Unknown

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -121.0126
East Bounding Coordinate: -120.2801
North Bounding Coordinate: 43.4104
South Bounding Coordinate: 42.7249

Keywords:

Theme:

Theme Keyword Thesaurus: None
Theme Keyword: Estuary
Theme Keyword: Floodplain
Theme Keyword: Flooding
Theme Keyword: Hazards
Theme Keyword: FEMA Flood Hazard Zones
Theme Keyword: Q3 Flood Data
Theme Keyword: Special Flood Hazard Areas

Place:

Place Keyword Thesaurus: None
Place Keyword: Oregon
Place Keyword: Coquille
Place Keyword: USA

Access Constraints: None
Use Constraints: None -
Point of Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Federal Emergency Management Agency

Contact Position: Mitigation Directorate National Flood Insurance Program
Contact Address:

Address Type: mailing and physical address
Address: 500 C Street SW
City: Washington
State or Province: District of Columbia
Postal Code: 20472
Country: USA

Contact Voice Telephone: 1-800-358-9616
Contact Facsimile Telephone: 1-800-358-9616

Native Data Set Environment: Arc/Info coverage format

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
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 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 files. 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
on past floods and are described by a unique attribute code
that distinguishes them from areas of 1% annual chance
flooding derived from FIRMs. Flood Insurance Rate Maps
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 the 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

Lineage:

Source Information:

Source Citation:

Citation Information:

Originator:
Federal Emergency management Agency - National Flood Insurance Program

Publication Date: 091998
Title: Q3 Flood Data For the Coquille Basin
Edition: September 1998
Geospatial Data Presentation Form: map
Publication Information:

Publisher:
Federal Emergency management Agency - National Flood Insurance Program

Online Linkage: http://www.fema.gov
Larger Work Citation:

Citation Information:

Originator:
Federal Emergency management Agency - National Flood Insurance Program

Publication Date: 091998
Title: Q3 Flood Data Disc 2
Publication Information:

Publisher:
Federal Emergency management Agency - National Flood Insurance Program

Online Linkage: http://www.fema.gov

Type of Source Media: Paper
Source Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date:
Beginning Time: Unknown
Ending Date: 1998
Ending Time: Unknown

Source Contribution: Spatial And Attribute Information

Process Step:

Process Description:
Original theme obtained from FEMA on compact disc as Arc Export files in Geographic projection. Data was available tiled by County for Coos and Douglas counties (no Q3 data was available for Curry county from FEMA). There were no
SFHA-IN polygons for the Coquille Basin Area occuring in the Douglas County data, so the two county files were not
appended. The Coos county file was imported into ArcINFO and projected into the Oregon lambert projection, clipped
to the DEMIS Coquille Boundary coverage in ArcINFO, then built and exported. FEMA

Cloud Cover: 0

Direct Spatial Reference Method: Vector
Point and Vector Object Information:

SDTS Terms Description:

SDTS Point and Vector Object Type: GT-polygon composed of chains
Point and Vector Object Count: 339

Horizontal Coordinate System Definition:

Planar:

Map Projection:

Map Projection Name: Lambert Conformal Conic
Lambert Conformal Conic:

Standard Parallel: 43
Standard Parallel: 45.5
Longitude of Central Meridian: -120.5
Latitude of Projection Origin: 41.75
False Easting: 400000
False Northing: 0

Planar Coordinate Information:

Planar Coordinate Encoding Method: Coordinate Pair
Coordinate Representation:

Abscissa Resolution: 0
Ordinate Resolution: 0

Geodetic Model:

Horizontal Datum Name: North American Datum of 1983
Ellipsoid Name: Geodetic Reference System 80
Semi-major Axis: 6378137
Denominator of Flattening Ratio: 298.257

Detailed Description:

Entity Type:

Entity Type Label: fema.pat
Entity Type Definition: Polygon Attribute Table
Entity Type Definition Source: None

Attribute:

Attribute Label: Area
Attribute Definition: Area of polygon
Attribute Definition Source: Software generated
Attribute Domain Values:

Unrepresentable Domain: Software computed

Attribute:

Attribute Label: Co_fips
Attribute Domain Values:

Enumerated Domain:

Enumerated Domain Value: 011
Enumerated Domain Value Definition: Coos County

Attribute:

Attribute Label: Cobra
Attribute Definition:
An area designated as within the Coastal Barrier Resources System in which flood insurance is unavailable for
structures newly built or substantially improved after the
Coastal Barrier date. The specific Coastal Barrier
designation date is available on the printed FIRM.

Attribute Domain Values:

Enumerated Domain:

Enumerated Domain Value: COBRA_OUT
Enumerated Domain Value Definition: An area outside the Coastal Barrier Resources System.

Attribute:

Attribute Label: Community
Attribute Definition:
Identifies a county, city, or other community responsible for floodplain
management. Numeric value assigned by FEMA.

Attribute Domain Values:

Unrepresentable Domain: Character Field

Attribute:

Attribute Label: Fema#
Attribute Definition: Internal feature number
Attribute Definition Source: Software generated
Attribute Domain Values:

Unrepresentable Domain: Software computed

Attribute:

Attribute Label: Fema-id
Attribute Definition: Feature identification number
Attribute Definition Source: Software generated
Attribute Domain Values:

Unrepresentable Domain: User Defined

Attribute:

Attribute Label: Fema_
Attribute Definition: Internal feature number
Attribute Definition Source: Software generated
Attribute Domain Values:

Unrepresentable Domain: Software computed

Attribute:

Attribute Label: Fema_id
Attribute Definition: User Assigned feature Number
Attribute Domain Values:

Range Domain:

Range Domain Minimum: 271
Range Domain Maximum: 759

Attribute:

Attribute Label: Fips
Attribute Definition: Standard 5-digit State and County FIPS codes
Attribute Definition Source:
Federal Information Processing Standard (FIPS), National Institute of Standards & Technology (NIST)

Attribute Domain Values:

Codeset Domain:

Codeset Name: FIPS Codes
Codeset Source:
Federal Information Processing Standard (FIPS), National Institute of Standards & Technology (NIST)

Attribute:

Attribute Label: Firm_panel
Attribute Definition:
Eleven-digit alpha-numeric code identifies portion of community covered
or not covered by a FIRM panel.

Attribute Domain Values:

Unrepresentable Domain:
Code comprises a unique alpha-numeric sequence based on FIPS
and FEMA Community and Panel identification numbers

Attribute:

Attribute Label: Floodway
Attribute Definition:
An area that includes the channel of a river or other watercourse and the adjacent land areas that must be
reserved in order to discharge the base flood without
cumulatively increasing the water-surface elevation by more
than a designated height. (Note: this area is normally in
Zone AE.)

Attribute Domain Values:

Unrepresentable Domain: _

Attribute:

Attribute Label: Lat
Attribute Definition: Origin Latitude of 7.5 minute Quad
Attribute Domain Values:

Unrepresentable Domain: Character Field

Attribute:

Attribute Label: Long
Attribute Definition: Origin Longitude of 7.5 minute Quad
Attribute Domain Values:

Unrepresentable Domain: Character Field

Attribute:

Attribute Label: Panel
Attribute Definition: Firm panel Number and Suffix
Attribute Domain Values:

Codeset Domain:

Codeset Name: Firm Panel Number and Suffix
Codeset Source: FEMA

Attribute:

Attribute Label: Panel_typ
Attribute Definition:
The portion of a community covered by a community based map sheet (panel). A community may consist of more than one
FIRM panel. The FIRM panel is further identified by its
FIRM panel number and its suffix.

Attribute Domain Values:

Codeset Domain:

Codeset Name: Firm panel Number
Codeset Source: FEMA

Attribute:

Attribute Label: Pcomm
Attribute Definition: FIRM Community/county identifier
Attribute Domain Values:

Unrepresentable Domain: Character Field

Attribute:

Attribute Label: Perimeter
Attribute Definition: Perimeter of polygon
Attribute Definition Source: Software generated
Attribute Domain Values:

Unrepresentable Domain: Software computed

Attribute:

Attribute Label: Quad
Attribute Definition: USGS 7.5-minute quadrangle identifier
Attribute Domain Values:

Unrepresentable Domain: Character Field

Attribute:

Attribute Label: Quad_unit
Attribute Definition: Index Number to 7.5 minute quad
Attribute Domain Values:

Codeset Domain:

Codeset Name: Quad Code
Codeset Source: USGS

Attribute:

Attribute Label: Sfha
Attribute Definition:
An area designated as within a ""Special Flood Hazard Area"" (or SFHA) on a FIRM.

Attribute Domain Values:

Enumerated Domain:

Enumerated Domain Value: IN
Enumerated Domain Value Definition:
An area designated as within a ""Special Flood Hazard Area"" (or SFHA) on a FIRM. This is an area inundated by 1% annual
chance flooding for which BFEs or velocity may have been
determined. No distinctions are made between the different
flood hazard zones that may be included within the SFHA.
These may include Zones A, AE, AO, AH, A99, AR, V, or VE.

Enumerated Domain Value: OUT
Enumerated Domain Value Definition:
An area designated as outside a ""Special Flood Hazard Area""(or SFHA) on a FIRM. This is an area inundated by 0.2%
annual chance flooding; an area inundated by 1% annual
chance flooding with average depths of less than 1 foot or
with drainage areas less than 1 square mile; an area
protected by levees from 1% annual chance flooding; or an
area that is determined to
be outside the 1% and 0.2% annual chance floodplains. No
distinctions are made between these different conditions.

Attribute:

Attribute Label: St_fips
Attribute Definition: State FIPS Code
Attribute Domain Values:

Enumerated Domain:

Enumerated Domain Value: 41
Enumerated Domain Value Definition: Oregon

Attribute:

Attribute Label: State
Attribute Domain Values:

Unrepresentable Domain: Character Field

Attribute:

Attribute Label: Symbol
Attribute Domain Values:

Range Domain:

Range Domain Minimum: 0
Range Domain Maximum: 12

Attribute:

Attribute Label: Zone
Attribute Definition: Flood hazard zone designation
Attribute Definition Source: FEMA FIRM
Attribute Domain Values:

Enumerated Domain:

Enumerated Domain Value: A
Enumerated Domain Value Definition:
This code identifies an area inundated by 1% annual chance flooding, for which no BFEs have been determined.

Enumerated Domain Value: ANI
Enumerated Domain Value Definition:
An area that is located within a community or county that is not mapped on any published FIRM.

Enumerated Domain Value: X
Enumerated Domain Value Definition:
An area that is determined to be outside the 1% and 0.2% annual chance floodplains.

Enumerated Domain Value: X500
Enumerated Domain Value Definition:
An Area Inundated by 0.2% annual chance flooding; an area inundated by 1% annual chance flooding with average depths of less than 1 foot or with
drainage areas less than 1 square mile; or an area protected by levees from 1% annual
chance flooding.

Overview Description:

Entity and Attribute Overview:
In addition to locational and topological information, Q3 Flood Data elements are explicitly encoded using attribute items. Each attribute item identifies characteristics about the Flood Hazard Area, COBRA, Floodway, Political Jurisdiction, Quadrangle, or FIRM panel. All polygon data elements may be encoded with one or more feature characteristics.

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: Federal Emergency Management Agency

Contact Position: Mitigation Directorate National Flood Insurance Program
Contact Address:

Address Type: mailing and physical address
Address: 500 C Street SW
City: Washington
State or Province: District of Columbia
Postal Code: 20472
Country: USA

Contact Voice Telephone: 1-800-358-9616
Contact Facsimile Telephone: 1-800-358-9616

Resource Description: FEMA Q3 Data CD #2
Distribution Liability:
THE DATA AND ASSOCIATED DATA FILES ON THIS CD-ROM ARE PROVIDED ""AS IS,"" WITHOUT WARRANTY TO THEIR PERFORMANCE, MERCHANTABLE STATE, OR FITNESS FOR ANY PARTICULAR PURPOSE. THE ENTIRE RISK ASSOCIATED WITH THE RESULTS AND PERFORMANCES OF THE DATA IS ASSUMED
BY THE USER. THIS DATA IS NOT FOR NAVIGATIONAL OR LEGAL PURPOSES.

Available Time Period:

Time Period Information:

Single Date/Time:

Time of Day: Unknown

Metadata Date: 1/1/2000
Metadata Review Date: 1/1/2000
Metadata Future Review Date:
Metadata Contact:

Contact Information:

Contact Organization Primary:

Contact Organization:
Oregon Ocean Coastal Management Program - Department of Land Conservation and Development

Contact Person: Tanya Haddad

Contact Position: DEMIS Coordinator
Contact Address:

Address Type: mailing and physical address
Address: 800 NE Oregon Street #18
City: Portland
State or Province: Oregon
Postal Code: 97232
Country: USA

Contact Voice Telephone: 503-731-4065 x30
Contact Facsimile Telephone: 503-731-4068
Contact Electronic Mail Address: tanya.haddad@state.or.us

Metadata Standard Name: FGDC CSDGM
Metadata Standard Version: FGDC-STD-001-1998