Skip Maine state header navigation

Agencies | Online Services | Help

Flood Insurance Rate Map

Tags
flood insurance rate maps, Maine, emergency preparedness, imageryBaseMapsEarthCover, health, hydrosphere, inlandWaters, special flood hazard areas, geoscientificInformation, human dimensions, Q3


Summary

The FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which "requires the purchase of flood insurance by property owners who are being assisted by Federal programs or by Federally supervised, regulated, or insured agencies or institutions in the acquisition or improvement of land facilities located or to be located in identified areas having special flood hazards" (Section 2 (b) (4) of the 1973 Flood Disaster Protection Act). In addition to the identification of Special Flood Hazard Areas (SFHAs), the risk zones shown on the FIRMs are the basis for the establishment of premium rates for flood insurance coverage offered through the NFIP. Q3 Flood Data files convey certain key features from the existing hard copy FIRM. Edge-matching errors, overlaps and deficiencies in coverage, and similar problems are not corrected during digitizing or post-processing. The Q3 Flood Data files are 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.

Description

FIRM is Q3 Flood Data derived from the Flood Insurance Rate Maps (FIRMs) published by the Federal Emergency Management Agency (FEMA) mapped at 1:24000 scale. The file is georeferenced to the earth's surface using the Universal Transverse Mercator (UTM) projection and a zonal coordinate system (units in meters). Specifications for the horizontal control of Q3 Flood Data files are consistent with those required for mapping at a scale of 1:24000.

Credits

Acknowledgment of FEMA would be appreciated in products derived from these data. Credit should always be given to the data source and/or originator when the data is transferred or printed.

Use limitations

Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. Updates, corrections, and feedback, incorporated in the Maine GIS database are made in accordance with "Data Standards for Maine Geographic Information Systems", 2002, and coordinated by MEGIS.

Extent

Scale Range
Maximum (zoomed in)  1:5,000
Minimum (zoomed out)  1:150,000,000

ArcGIS Metadata 

Topics and Keywords 

Themes or categories of the resource  geoscientificInformation, imageryBaseMapsEarthCover, inlandWaters, planningCadastre


Place keywords  Maine

Thesaurus
Title Maine GIS Thesaurus-Place




Stratum keywords  hydrosphere, human dimensions

Thesaurus
Title GCMD Parameter Keyword




Theme keywords  imageryBaseMapsEarthCover, inlandWaters, geoscientificInformation

Thesaurus
Title ISO Keyword Thesaurus




Theme keywords  flood insurance rate maps, emergency preparedness, special flood hazard areas, Q3

Thesaurus
Title Maine GIS Thesaurus-Theme




Citation 

Title Flood Insurance Rate Map
Publication date 2002-11-01
Indeterminate time unknown


Presentation formats  digital map
FGDC geospatial presentation format  vector digital data


Series
Name FIRM
Issue FEMA Q3 Flood Data

Other citation details 1:24000 Publication dates for the Q3 Flood Data by county: Cumberland County 1996; Hancock County 1997; Kennebec County 1996; Oxford County 1996; Penobscot County 1996; Sagadahoc County 1997; Waldo County 1997; Washington County 1997; York County 1996. Original publication location Washington DC, by the Federal Emergency Management Agency (FEMA).


Citation Contacts 

Responsible party
Organization's name Federal Emergency Management Agency (FEMA), Maine Office of Geographic Information Systems (MEGIS, comp.)
Contact's role  originator


Resource Details 

Dataset languages  English


Status  completed
Spatial representation type  vector


Supplemental information
For metadata specific to each county and each FIRM hardcopy map source, see related table "firmmeta" available from the MEGIS Data Catalog "Tables" link at http://megis.maine.gov/catalog/ . Printed maps, hardcopy Flood Insurance Rate Maps used as the source of this data, published by the Federal Emergency Management Agency 11/1974-6/1996
Processing environment (FEMA)Original data development environment varied. Additional manipulation, topological structuring, and attribute encoding were undertaken using ARC/INFO software on a UNIX-based workstation; Maine Office of Information Technology (OIT) Oracle 9i, Maine Office of Geographic Information Systems (MEGIS), Maine GIS Maine GIS Internet Data Catalog http://megis.maine.gov/catalog/


Credits
Acknowledgment of FEMA would be appreciated in products derived from these data. Credit should always be given to the data source and/or originator when the data is transferred or printed.
ArcGIS item properties

Extents 

Extent
Geographic extent
Bounding rectangle
West longitude -71.3
East longitude -66.8
South latitude 42.9
North latitude 47.6

Extent
Description
publication date
Temporal extent
Beginning date 1974-11-01
Ending date 1996-06-01

Resource Points of Contact 

Point of contact
Organization's name Federal Emergency Management Agency, Mitigation Directorate
Contact's role  point of contact


Contact information
Phone
Voice (800) 358-9616

Address
Type both
Delivery point 500 C Street SW
City Washington
Administrative area DC
Postal code 20472
Country US



Resource Maintenance 

Resource maintenance
Update frequency  irregular


Resource Constraints 

Legal constraints
Limitations of use
Users must assume responsibility to determine the usability of this data for their purposes.
Limitations of use
Users must assume responsibility to determine the usability of this data for their purposes. Although these data have been processed successfully on a computer system at the Maine Office of Geographic Information Systems, no warranty expressed or implied is made by MEGIS regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. Neither the Maine Office of Geographic Information Systems, nor any of its contributors, is liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets.
Constraints
Limitations of use
Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. Updates, corrections, and feedback, incorporated in the Maine GIS database are made in accordance with "Data Standards for Maine Geographic Information Systems", 2002, and coordinated by MEGIS.

Spatial Data Properties 

Vector
Geometric objects
Object type  complex
Object count 3101



Indirect spatial referencing
sample Penobscot County

Data Quality 

Scope of quality information
Resource level  dataset




Data quality report - Completeness omission
Measure description Data completeness for Q3 Flood Data files reflects the content of the source graphic. Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. Flood risk data are developed for communities participating in the NFIP for use in insurance rating and for floodplain management. Flood hazard areas are determined using statistical analysis of records of river flow, storm tides, and rainfall; information obtained through consultation with the communities: floodplain topographic surveys; and hydrologic and hydraulic analysis. Both detailed and approximate analyses are employed. Generally, detailed analyses are used to generate flood risk data only for developed or developing areas of communities. For undeveloped areas where little or no development is expected to occur, FEMA uses approximate analyses to generate flood risk data. Typically, only drainage areas that are greater than one square mile are studied. Q3 Flood Data may be derived from DFIRM-DLGs, from FIRM-DLGs, or from FIRMs digitized previously for emergency applications, or they may be newly created. In Q3 Flood Data derived from older data sets, certain items may not have been captured or may have been captured differently from the current Q3 Flood Data specifications. In some cases, preliminary FIRM data have been included in the Q3 Flood Data files. These data have been provided to the community for review and comment, and may be subject to change before their final publication date. In addition, in some cases, areas designated as Flood Prone Areas on maps prepared by USGS and FIA have been included in the Q3 Flood Data files. These areas were delineated based on available information of past floods and are described by a unique attribute code that distinguishes them from areas of 1% annual chance flooding derived from FIRMs. FIRMs continually undergo revisions and updates. Some of these revisions are effected by letter (Letter of Map Revision [LOMR], Letter of Map Amendment [LOMA]). Q3 Flood Data may not reflect the most current information or information that is not mappable at the publication scale of the FIRM.




Data quality report - Quantitative attribute accuracy
Measure description The Q3 Flood Data are countywide vector files derived from FEMA FIRMs. The attribute definitions may be found in the "Q3 Flood Data Specifications". Attribute accuracy was tested by manual comparison of source graphic with hardcopy plots and a symbolized display on an interactive computer graphic system. Selected attributes that could not be visually verified were individually queried. In addition, an ARC/INFO Arc Macro Language (AML) software program was applied to the dataset to test the attributes against a master set of valid attributes for the specific data category and a complete set of valid attribute combinations.




Data quality report - Absolute external positional accuracy
Dimension horizontal


Measure description Q3 DLG is developed by scanning and vectorizing the existing hardcopy FIRM to create a thematic overlay of flood risks in vector format....Edge-matching errors, overlaps and underlaps in coverage and similar problems are not corrected during digitizing or scanning. (Q3 Flood Data Specifications, June 1995, FEMA, Washington DC.)


Quantitative test results
Value 12


Evaluation method The specifications for the horizontal control of vector Q3 Flood Data are consistent with those required for mapping at the scale of 1:24,000. (Q3 Flood Data Specifications, June 1995, FEMA, Washington DC)




Lineage 

Process step
Description Q3 Flood Data were produced by either scanning and vectorizing or manually digitizing a hardcopy version of the graphic materials. The scanning and vectorization process captured the digital data as raster data that were vectorized and attributed on an interactive editing station. The manual digitizing process used a digitizing table to capture the digital data; attribution was performed either as the data were digitized or on an interactive edit station after the digitizing was completed. The determination of the production methodology was based on various criteria, including availability of production systems. Four to nine control points per FIRM panel were used for registration during manual digitizing. A projective transformation was performed on the coordinates used in the data collection and editing systems to register the digital data to the Universal Transverse Mercator (UTM) grid coordinates. An ARC/INFO coverage of the Q3 Flood Data was generated and used to create the Q3-DLG file. The Q3 Flood Data were checked for position and attribute accuracy by comparing plots of the digital data to the source graphic and by symbolized display on an interactive computer system. Selected attributes that could not be visually verified were individually queried. In addition, an ARC/INFO Arc Macro Language (AML) software program was applied to the dataset to test the attributes against a master set of valid attributes for the specific data category and a complete set of valid attribute combinations. Source graphics were revised to reflect updates effected by Letters of Map Change (Letter of Map Revision [LOMR], Letter of Map Amendment [LOMA]). These revisions were included in the Q3 Flood Data if they were mappable at the publication scale of the source graphic. Once final, the ARC/INFO coverage is projected into a geographic grid system, using decimal degree latitude and longitude coordinates and then converted into an ARC/INFO Export file.


Process contact
Organization's name Federal Emergency Management Agency, Mitigation Directorate
Contact's role  processor


Contact information
Phone
Voice (800) 358-9616

Address
Type both
Delivery point 500 C Street SW
City Washington
Administrative area DC
Postal code 20472
Country US





Process step
When the process occurred 1999-07-01
Description The Maine Office of GIS completed the conversion of all final data layers from NAD27 to NAD83 in July 1999. All the data layers were converted using the ArcInfo (version 7.2.1) NADCON conversion and the "project" command. All data was copied to double precision, projected to NAD83, and then copied back to single precision. It was decided to keep the NAD27 quad structure instead of generating new quad boundaries from NAD83 coordinates - all indexes (quads) were projected to NAD83 by using the same process previously described. All MEGIS data libraries in ArcInfo Librarian were repopulated using the NAD83 indexes and data.


Process contact
Individual's name David Kirouac
Organization's name (MEGIS) Maine Office of Geographic Information Systems
Contact's role  processor


Contact information
Phone
Voice (207) 215-6936

Address
Type both
Delivery point MEGIS 174 SHS
City Augusta
Administrative area ME
Postal code 04330
Country US
e-mail addressdavid.kirouac@maine.gov

Hours of service 8:00 AM - 4:00 PM




Source data
Description For metadata specific to each county and each LOMR letter of map revision, see related table "firmmeta" available from the MEGIS Data Catalog "Tables" link at <http://megis.maine.gov/catalog/>.


Source citation
Title (FIRMLOMR)Letters of Map Revision
Alternate titles  firmlomr


Presentation formats  hardcopy document
FGDC geospatial presentation format  document


Series
Name Letters of Map Revision
Issue multiple issue

Other citation details Letters of Map Revision affect the Flood Insurance Rate Maps for the spcified towns and include detailed metadata information on the affected fields Panel, Case No., Type:, Identifier, Included Q3, Flooding Source, as well as Determination, with regard to map revision.


Responsible party
Organization's name Federal Emergency Management Agency (FEMA)
Contact's role  publisher


Contact information
Address
Delivery point Washington DC



Responsible party
Organization's name Federal Emergency Management Agency (FEMA)
Contact's role  originator




Extent of the source data
Description
determination dates
Temporal extent
Beginning date 1995-04-01
Indeterminate time unknown
Ending date 1996-09-01
Indeterminate time unknown



Source data
Description For metadata specific to each county and each LOMR letter of map revision, see related table "firmmeta" available from the MEGIS Data Catalog "Tables" link at <http://megis.maine.gov/catalog/>.


Source citation
Title (FIRMLOMC)Letters of Map Change
Alternate titles  firmlomc


Presentation formats  hardcopy document
FGDC geospatial presentation format  document


Series
Name Letters of Map Change
Issue multiple issue

Other citation details Letters of Map Change affect the Flood Insurance Rate Maps for the specified towns and include detailed metadata information on the affected fields Panel, Case No., Type, Identifier, Included Q3, Flooding Source, as well as Determination, with regard to Map Change.


Responsible party
Organization's name Federal Emergency Management Agency (FEMA)
Contact's role  originator


Responsible party
Organization's name Federal Emergency Management Agency (FEMA)
Contact's role  publisher


Contact information
Address
Delivery point Washington DC





Extent of the source data
Description
determination dates
Temporal extent
Beginning date 1987-03-01
Indeterminate time unknown
Ending date 1995-06-01
Indeterminate time unknown



Source data
Description For metadata specific to each county and each FIRM hardcopy map source, see related table "firmmeta" available from the MEGIS Data Catalog "Tables" link at <http://megis.maine.gov/catalog/>. Q3 FLOOD DATA publication dates by county: Cumberland County 1996, Printed maps, hardcopy FIRMS, published by the Federal Emergency Management Agency.


Source medium name  hardcopy—printing on paper
Source citation
Title (FIRMHRDCPY) Flood Insurance Rate Maps
Alternate titles  firmhrdcpy


Presentation formats  hardcopy map
FGDC geospatial presentation format  map


Series
Name Flood Insurance Rate Maps
Issue multiple issue

Other citation details The hardcopy FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which "requires the purchase of flood insurance by property owners who are being assisted by Federal programs or by Federally supervised, regulated, or insured agencies or institutions in the acquisition or improvement of land facilities located or to be located in identified areas having special flood hazards" (Section 2 (b) (4) of the 1973 Flood Disaster Protection Act). In addition to the identification of Special Flood Hazard Areas (SFHAs), the risk zones shown on the FIRMs are the basis for the establishment of premium rates for flood insurance coverage offered through the NFIP. The hardcopy FIRM maps for Maine vary in scale from 4800 to 12000.


Responsible party
Organization's name Federal Emergency Management Agency (FEMA)
Contact's role  publisher


Contact information
Address
Delivery point Washington DC



Responsible party
Organization's name Federal Emergency Management Agency (FEMA)
Contact's role  originator




Extent of the source data
Description
effective date
Temporal extent
Beginning date 1974-11-01
Indeterminate time unknown
Ending date 1996-06-01
Indeterminate time unknown



Fields 

Details for object FIRM 
Definition
polygon feature class
Definition source
Enivronmental Research Systems Institute, Inc. (ESRI)


Field COBRA
 
Field description
Undeveloped Coastal Barrier Area- this item indicates whether the area is inside or outside of a designated Coastal Barrier Area or Otherwise Protected Area. Only the extents of the Coastal Barrier Resources Act area boundaries are portrayed in the Q3 Flood Data files. The boundaries between Coastal Barrier Resources Act areas and Otherwise Protected Areas and between areas with different designation dates are not included in the Q3 Flood Data files. Users should refer to the FIRM for such information.
Description source
FEMA FIRM Multiple Codes refer to "Q3 Flood Data Specifications" available at <http://msc.fema.gov/MSC/q3users.htm>
List of values
Value COBRA_IN
Description An area designated as an Undeveloped Coastal Barrier Area or Otherwise Protected Area in which flood insurance is unavailable for structures newly built or substantially improved.
Value COBRA_OUT
Description An area outside a designated Undeveloped Coastal Barrier Area or Otherwise Protected Area in which flood insurance is unavailable for structures newly built or substantially improved.


Measurement frequency  Unknown




Field COMMUNITY
 
Field description
identifies a county, city, or other community responsible for floodplain management (numeric value assigned by FEMA)
Description source
FEMA FIRM
Range of values
Minimum value 0
Maximum value 9999

Measurement frequency  Unknown




Field CO_FIPS
 
Field description
county FIPS code
Description source
Federal Information Processing Standard (FIPS), National Institute of Standards & Technology (NIST)
List of values
Value 005
Description Cumberland County
Value 009
Description Hancock County
Value 011
Description Kennebec County
Value 017
Description Oxford County
Value 019
Description Penobscot County
Value 023
Description Sagadahoc County
Value 027
Description Waldo County
Value 029
Description Washington County
Value 031
Description York County


Coded values
Name of codelist Federal Information Processing Standard (FIPS)
Source National Institute of Standards and Technology (NIST)

Measurement frequency  Unknown




Field FIPS
 
Field description
standard 5-digit state and county FIPS code
Description source
Federal Information Processing Standard (FIPS), National Institute of Standards & Technology (NIST)
Coded values
Name of codelist Federal Information Processing Standard (FIPS)
Source National Institute of Standards and Technology (NIST)



Field FIRM_PANEL
 
Field description
Eleven-digit alpha-numeric code that identifies portion of community covered or not covered by a FIRM panel.
Description source
FEMA FIRM, code comprised of a unique alpha-numeric sequence based on FIPS and FEMA Community and Panel identification numbers
Measurement frequency  Unknown




Field FLOODWAY
 
Field description
channel, river or watercourse reserved for flood discharge
Description source
FEMA FIRM, multiple codes refer to "Q3 Flood Data Specifications" available at <http://msc.fema.gov/MSC/q3users.htm> for additional information
List of values
Value FW
Description 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.)




Field LAT
 
Field description
origin latitude (degrees) of 7.5-minute quadrangle
Description source
USGS quadrangle Index
Range of values
Minimum value +0000
Maximum value +0090



Field LONG
 
Field description
origin longitude (degrees) of 7.5-minute quadrangle
Description source
USGS quadrangle Index
Range of values
Minimum value -0180
Maximum value +0180



Field PANEL
 
Field description
FIRM panel number and suffix
Description source
FEMA FIRM, code comprised of a unique alpha-numeric sequence based on FIPS and FEMA Community and Panel identification numbers


Field PANEL_TYP
 
Field description
type of FIRM panel represented
Description source
FEMA FIRM, multiple codes refer to "Q3 Flood Data Specifications" available at <http://msc.fema.gov/MSC/q3users.htm> for additional information
List of values
Value CBPP
Description 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 it's suffix.
Value CBNP
Description The portion of a community covered by a community based map sheet (panel) that is not printed. The FIRM panel is further identified by its FIRM panel number, and its suffix.
Value AOPN
Description Any unpaneled areas of a participating county. It should be used to identify any areas that fall within a participating community but outside of the defined paneling scheme. It should not be confused with the Unmapped Community attribute, which should be used for unmapped or non-participating communities.
Value UNMC
Description A jurisdiction that has not been mapped or identified by the National Flood Insurance Program (NFIP). It may be applied to a jurisdiction that has no maps because it has no Special Flood Hazard Area, or it may be applied to a jurisdiction that is not identified by the NFIP or is not participating in the NFIP.




Field PCOMM
 
Field description
FIRM community/county identifier
Description source
FEMA FIRM, code comprised of a unique alpha-numeric sequence based on FIPS and FEMA Community and Panel identification numbers


Field QUAD
 
Field description
USGS 7.5 minute quadrangle identifier
Description source
USGS quadrangle Index
Description of values Unique sequence based on latitude and longitude




Field QUAD_UNIT
 
Field description
index number to 7.5 minute quadrangle
Description source
USGS quadrangle Index
Description of values Unique numeric sequence




Field SFHA
 
Field description
in/out of flood zone designation indicates if the area is a Special Flood Hazard Area and corresponds to ZONE types
Description source
determined from data topology
List of values
Value IN
Description area located within Special Flood Hazard Area (SFHA)
Value OUT
Description area located outside of SFHA




Field STATE
 
Field description
state FIPS code
Description source
Federal Information Processing Standard (FIPS), National Institute of Standards & Technology (NIST)
Coded values
Name of codelist Federal Information Processing Standard (FIPS)
Source National Institute of Standards & Technology



Field ST_FIPS
 
Field description
state FIPS code
Description source
Federal Information Processing Standard (FIPS), National Institute of Standards & Technology (NIST)
Coded values
Name of codelist Federal Information Processing Standard (FIPS)
Source National Institute of Standards and Technology (NIST)



Field SYMBOL
 
Field description
polygon shade symbols for graphic output based on polygon codes for ZONE, FLOODWAY, and COBRA
Description source
(Users should note that in order to replicate these colors, a Q3 Shadeset must be installed.) <http://msc.fema.gov/MSC/q3users.htm> for additional information


Field ZONE
 
Field description
flood hazard zone designation
Description source
FEMA FIRM, multiple Codes refer to "Q3 Flood Data Specifications" available at <http://msc.fema.gov/MSC/q3users.htm> for additional information
List of values
Value A
Description An area inundated by 100-year flooding, for which no Base Flood Elevations (BFES) have been determined; IN Special Flood Hazard Area (SFHA).
Value AE
Description An area inundated by 100-year flooding, for which Base Flood Elevations (BFES) have been determined; IN Special Flood Hazard Area (SFHA).
Value AO
Description An area inundated by 100-year flooding (usually sheet flow on sloping terrain), for which average depths have been determined; flood depths range from 1 to 3 feet; IN Special Flood Hazard Area (SFHA).
Value AH
Description An area inundated by 100-year flooding (usually an area of ponding), for which Base Flood Elevations have been determined; flood depths range from 1 to 3 feet; IN Special Flood Hazard Area (SFHA).
Value VE
Description An area inundated by 100-year flooding with velocity hazard (wave action); Base Flood Elevations (BFES) have been determined; IN Special Flood Hazard Area (SFHA).
Value X500
Description An area inundated by 500-year flooding; an area inundated by 100-year 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 100-year flooding; OUT Special Flood Hazard Area (SFHA).
Value X
Description An area that is determined to be outside the 100- and 500-year floodplains; OUT Special Flood Hazard Area (SFHA).
Value ANI
Description An area that is located within a community or county that is not mapped on any published FIRM; OUT Special Flood Hazard Area (SFHA).
Value UNDES
Description A body of open water, such as a pond, lake, ocean, etc., located within a community's jurisdictional limits that has no defined flood hazard; OUT Special Flood Hazard Area (SFHA).
Value D
Description An area of undetermined but possible flood hazards; OUT Special Flood Hazard Area (SFHA).






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.


Entity and Attribute Detail Citation The FEMA "Q3 Flood Data Specifications" contains a detailed description of each attribute code and a reference to other relevant information <http://msc.fema.gov/MSC/q3users.htm> The ArcView shapefile and ArcGIS geodatabase formats, commonly used for Maine GIS data, carry default identifiers and attributes that are software generated and/or important for internal recordkeeping. These are listed here to avoid repetition for every layer, and may not be repeated in the attribute descriptions and definitions of each layer. Common software generated identifiers and attributes in Maine GIS data include: FID (feature identifier), Shape (feature geometry), OBJECTID and SHAPE_lengt. In addition, most GIS formats will carry fields for PERIMETER, AREA and/or LENGTH according to feature geometry. These fields are typically available by default, with the units based on coordinate system or projection units of GIS data. Most GIS software packages also provide a means to calculate these values. It is important to test any columns containing PERIMETER, AREA or LENGTH values before using them for analysis purposes. These important values can be carried from format to format and become out-dated. Verify that the values are correct. Also, in your GIS software, please view the properties of data layers for the map units used to calculate these fields, and for the units set for display purposes.




References 

Aggregate Information
Association type  cross reference


Aggregate resource name
Title FIRMMETA
Publication date 2002-11-27


Presentation formats  digital document
FGDC geospatial presentation format  tabular digital data


Series
Name Maine GIS
Issue SDE server; Internet Data Catalog; Tables

Responsible party
Organization's name Federal Emergency Management Agency (FEMA), Maine Office of Geographic Information Systems (MEGIS)(comp.)
Contact's role  originator


Responsible party
Organization's name Maine Office of Geographic Information Systems (MEGIS)
Contact's role  publisher


Contact information
Address
Delivery point Augusta ME



Resource location online
Locationhttp://megis.maine.gov/catalog/



Metadata Details 

Metadata language English
Metadata character set  utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata  dataset


Last update 1996-07-29


ArcGIS metadata properties
Metadata format ArcGIS 1.0
Standard or profile used to edit metadata FGDC


Created in ArcGIS for the item 2013-12-31 10:34:48



Metadata Contacts 

Metadata contact
Organization's name Maine Office of Geographic Information Systems
Contact's position GIS Coordinator
Contact's role  point of contact


Contact information
Phone
Voice 207-624-7700

Address
Type postal
Delivery point State House Station #145
City Augusta
Administrative area Maine
Postal code 04333
Country USA
e-mail addressOIT.Customer-Support@maine.gov

Hours of service 9 am to 5 pm EST
Contact instructions
Monday through Friday


Metadata Maintenance 

Maintenance
Update frequency  unknown


Other maintenance requirements Last metadata review date: 20100114


Thumbnail and Enclosures 

Enclosure
Enclosure type  File
Description of enclosure original metadata
Original metadata document, which was translated yes
Source metadata format fgdc

FGDC Metadata (read-only) 

Identification 

Citation
Citation Information
OriginatorFederal Emergency Management Agency (FEMA), Maine Office of Geographic Information Systems (MEGIS, comp.)
Publication Date2002-11-01
Publication TimeUnknown
Title
Flood Insurance Rate Map
Geospatial Data Presentation Formvector digital data
Series Information
Series NameFIRM
Issue IdentificationFEMA Q3 Flood Data
Publication Information
Publication PlaceAugusta ME
PublisherMaine Office of Geographic Information Systems (MEGIS)
Other Citation Details
1:24000 Publication dates for the Q3 Flood Data by county: Cumberland County 1996; Hancock County 1997; Kennebec County 1996; Oxford County 1996; Penobscot County 1996; Sagadahoc County 1997; Waldo County 1997; Washington County 1997; York County 1996. Original publication location Washington DC, by the Federal Emergency Management Agency (FEMA).
Online Linkagehttp://megis.maine.gov/catalog/

Description
Abstract
                            FIRM is Q3 Flood Data derived from the Flood Insurance Rate Maps (FIRMs) published by the Federal Emergency Management Agency (FEMA) mapped at 1:24000 scale. The file is georeferenced to the earth's surface using the Universal Transverse Mercator (UTM) projection and a zonal coordinate system (units in meters). Specifications for the horizontal control of Q3 Flood Data files are consistent with those required for mapping at a scale of 1:24000.
                          
Purpose
                            The FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which "requires the purchase of flood insurance by property owners who are being assisted by Federal programs or by Federally supervised, regulated, or insured agencies or institutions in the acquisition or improvement of land facilities located or to be located in identified areas having special flood hazards" (Section 2 (b) (4) of the 1973 Flood Disaster Protection Act). In addition to the identification of Special Flood Hazard Areas (SFHAs), the risk zones shown on the FIRMs are the basis for the establishment of premium rates for flood insurance coverage offered through the NFIP. Q3 Flood Data files convey certain key features from the existing hard copy FIRM. Edge-matching errors, overlaps and deficiencies in coverage, and similar problems are not corrected during digitizing or post-processing. The Q3 Flood Data files are 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.
                          
Supplemental Information
                            For metadata specific to each county and each FIRM hardcopy map source, see related table "firmmeta" available from the MEGIS Data Catalog "Tables" link at http://megis.maine.gov/catalog/ . Printed maps, hardcopy Flood Insurance Rate Maps used as the source of this data, published by the Federal Emergency Management Agency 11/1974-6/1996
                          
Time Period of Content
Time Period Information
Range of Dates/Times
Beginning Date1974-11
Ending Date1996-06
Currentness Reference
                            publication date
                          
Status
ProgressComplete
Maintenance and Update FrequencyIrregular

Spatial Domain
Bounding Coordinates
West Bounding Coordinate-71.3
East Bounding Coordinate-66.8
North Bounding Coordinate47.6
South Bounding Coordinate42.9

Keywords
Theme
Theme Keyword ThesaurusMaine GIS Thesaurus-Theme
Theme Keywordflood insurance rate maps
Theme Keywordspecial flood hazard areas
Theme KeywordQ3
Theme Keywordemergency preparedness

Theme
Theme KeywordimageryBaseMapsEarthCover
Theme KeywordinlandWaters
Theme KeywordgeoscientificInformation
Theme Keywordflood insurance rate maps
Theme Keywordemergency preparedness
Theme Keywordspecial flood hazard areas
Theme KeywordQ3

Place
Place Keyword ThesaurusMaine GIS Thesaurus-Place
Place KeywordMaine

Stratum
Stratum Keyword ThesaurusGCMD Parameter Keyword
Stratum Keywordhuman dimensions
Stratum Keywordhydrosphere

Use Constraints
                        Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. Updates, corrections, and feedback, incorporated in the Maine GIS database are made in accordance with "Data Standards for Maine Geographic Information Systems", 2002, and coordinated by MEGIS.
                      
Point of Contact
Contact Information
Contact Organization Primary
Contact OrganizationFederal Emergency Management Agency, Mitigation Directorate
Contact Address
Address Typemailing and physical address
Address500 C Street SW
CityWashington
State or ProvinceDC
Postal Code20472
CountryUNITED STATES

Contact Voice Telephone(800) 358-9616

Data Set Credit
                        Acknowledgment of FEMA would be appreciated in products derived from these data. Credit should always be given to the data source and/or originator when the data is transferred or printed.
                      
Native Data Set Environment
(FEMA)Original data development environment varied. Additional manipulation, topological structuring, and attribute encoding were undertaken using ARC/INFO software on a UNIX-based workstation; Maine Office of Information Technology (OIT) Oracle 9i, Maine Office of Geographic Information Systems (MEGIS), Maine GIS Maine GIS Internet Data Catalog http://megis.maine.gov/catalog/
Cross Reference
Citation Information
OriginatorFederal Emergency Management Agency (FEMA), Maine Office of Geographic Information Systems (MEGIS)(comp.)
Publication Date2002-11-27
Title
FIRMMETA
Geospatial Data Presentation Formtabular digital data
Series Information
Series NameMaine GIS
Issue IdentificationSDE server; Internet Data Catalog; Tables
Publication Information
Publication PlaceAugusta ME
PublisherMaine Office of Geographic Information Systems (MEGIS)
Online Linkagehttp://megis.maine.gov/catalog/


Data Quality 

Attribute Accuracy
Attribute Accuracy Report
                            The Q3 Flood Data are countywide vector files derived from FEMA FIRMs.  The attribute definitions may be found in the "Q3 Flood Data Specifications".  Attribute accuracy was tested by manual comparison of source graphic with hardcopy plots and a symbolized display on an interactive computer graphic system.  Selected attributes that could not be visually verified were individually queried.  In addition, an ARC/INFO Arc Macro Language (AML) software program was applied to the dataset to test the attributes against a master set of valid attributes for the specific data category and a complete set of valid attribute combinations.
                          
Completeness Report
                        Data completeness for Q3 Flood Data files reflects the content of the source graphic.  Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. Flood risk data are developed for communities participating in the NFIP for use in insurance rating and for floodplain management.  Flood hazard areas are determined using statistical analysis of records of river flow, storm tides, and rainfall; information obtained through consultation with the communities: floodplain topographic surveys; and hydrologic and hydraulic analysis.  Both detailed and approximate analyses are employed. Generally, detailed analyses are used to generate flood risk data only for developed or developing areas of communities.  For undeveloped areas where little or no development is expected to occur, FEMA uses approximate analyses to generate flood risk data.  Typically, only drainage areas that are greater than one square mile are studied. Q3 Flood Data may be derived from DFIRM-DLGs, from FIRM-DLGs, or from FIRMs digitized previously for emergency applications, or they may be newly created.  In Q3 Flood Data derived from older data sets, certain items may not have been captured or may have been captured differently from the current Q3 Flood Data specifications. In some cases, preliminary FIRM data have been included in the Q3 Flood Data files.  These data have been provided to the community for review and comment, and may be subject to change before their final publication date.  In addition, in some cases, areas designated as Flood Prone Areas on maps prepared by USGS and FIA have been included in the Q3 Flood Data files. These areas were delineated based on available information of past floods and are described by a unique 
attribute code that distinguishes them from areas of 1% annual chance flooding derived from FIRMs. FIRMs continually undergo revisions and updates.  Some of these revisions are effected by letter (Letter of Map Revision [LOMR], Letter of Map Amendment [LOMA]).  Q3 Flood Data may not reflect the most current information or information that is not mappable at the publication scale of the FIRM.
                      
Positional Accuracy
Horizontal Positional Accuracy
Horizontal Positional Accuracy Report
                                Q3 DLG is developed by scanning and vectorizing the existing hardcopy FIRM to create a thematic overlay of flood risks in vector format....Edge-matching errors, overlaps and underlaps in coverage and similar problems are not corrected during digitizing or scanning. (Q3 Flood Data Specifications, June 1995, FEMA, Washington DC.)
                              
Quantitative Horizontal Positional Accuracy Assessment
Horizontal Positional Accuracy Value12
Horizontal Positional Accuracy Explanation
                                    The specifications for the horizontal control of vector Q3 Flood Data are consistent with those required for mapping at the scale of 1:24,000.  (Q3 Flood Data Specifications, June 1995, FEMA, Washington DC)
                                  
Lineage
Source Information
Source Citation
Citation Information
OriginatorFederal Emergency Management Agency (FEMA)
Publication Datemultiple dates
Title
(FIRMHRDCPY) Flood Insurance Rate Maps
Geospatial Data Presentation Formmap
Series Information
Series NameFlood Insurance Rate Maps
Issue Identificationmultiple issue
Publication Information
Publication PlaceWashington DC
PublisherFederal Emergency Management Agency (FEMA)
Other Citation Details
The hardcopy FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which "requires the purchase of flood insurance by property owners who are being assisted by Federal programs or by Federally supervised, regulated, or insured agencies or institutions in the acquisition or improvement of land facilities located or to be located in identified areas having special flood hazards" (Section 2 (b) (4) of the 1973 Flood Disaster Protection Act). In addition to the identification of Special Flood Hazard Areas (SFHAs), the risk zones shown on the FIRMs are the basis for the establishment of premium rates for flood insurance coverage offered through the NFIP. The hardcopy FIRM maps for Maine vary in scale from 4800 to 12000.

Type of Source Mediapaper
Source Time Period of Content
Time Period Information
Range of Dates/Times
Beginning Date1974-11
Beginning TimeUnknown
Ending Date1996-06
Ending TimeUnknown
Source Currentness Reference
effective date
Source Citation Abbreviation
firmhrdcpy
Source Contribution
                                For metadata specific to each county and each FIRM hardcopy map source, see related table "firmmeta" available from the MEGIS Data Catalog "Tables" link at <http://megis.maine.gov/catalog/>. Q3 FLOOD DATA  publication dates by county: Cumberland County 1996, Printed maps, hardcopy FIRMS, published by the Federal Emergency Management Agency.
                              
Source Information
Source Citation
Citation Information
OriginatorFederal Emergency Management Agency (FEMA)
Publication Datemultiple dates
Title
(FIRMLOMC)Letters of Map Change
Geospatial Data Presentation Formdocument
Series Information
Series NameLetters of Map Change
Issue Identificationmultiple issue
Publication Information
Publication PlaceWashington DC
PublisherFederal Emergency Management Agency (FEMA)
Other Citation Details
Letters of Map Change affect the Flood Insurance Rate Maps for the specified towns and include detailed metadata information on the affected fields Panel, Case No., Type, Identifier, Included Q3, Flooding Source, as well as Determination, with regard to Map Change.

Source Time Period of Content
Time Period Information
Range of Dates/Times
Beginning Date1987-03
Beginning TimeUnknown
Ending Date1995-06
Ending TimeUnknown
Source Currentness Reference
determination dates
Source Citation Abbreviation
firmlomc
Source Contribution
                                For metadata specific to each county and each LOMR letter of map revision, see related table "firmmeta" available from the MEGIS Data Catalog "Tables" link at <http://megis.maine.gov/catalog/>.
                              
Source Information
Source Citation
Citation Information
OriginatorFederal Emergency Management Agency (FEMA)
Publication Datemultiple dates
Title
(FIRMLOMR)Letters of Map Revision
Geospatial Data Presentation Formdocument
Series Information
Series NameLetters of Map Revision
Issue Identificationmultiple issue
Publication Information
Publication PlaceWashington DC
PublisherFederal Emergency Management Agency (FEMA)
Other Citation Details
Letters of Map Revision affect the Flood Insurance Rate Maps for the spcified towns and include detailed metadata information on the affected fields Panel, Case No., Type:, Identifier, Included Q3, Flooding Source, as well as Determination, with regard to map revision.

Source Time Period of Content
Time Period Information
Range of Dates/Times
Beginning Date1995-04
Beginning TimeUnknown
Ending Date1996-09
Ending TimeUnknown
Source Currentness Reference
determination dates
Source Citation Abbreviation
firmlomr
Source Contribution
                                For metadata specific to each county and each LOMR letter of map revision, see related table "firmmeta" available from the MEGIS Data Catalog "Tables" link at <http://megis.maine.gov/catalog/>.
                              
Process Step
Process Description
                                Q3 Flood Data were produced by either scanning and vectorizing or manually digitizing a hardcopy version of the graphic materials. The scanning and vectorization process captured the digital data as raster data that were vectorized and attributed on an interactive editing station. The manual digitizing process used a digitizing table to capture the digital data; attribution was performed either as the data were digitized or on an interactive edit station after the digitizing was completed. The determination of the production methodology was based on various criteria, including availability of production systems. Four to nine control points per FIRM panel were used for registration during manual digitizing. A projective transformation was performed on the coordinates used in the data collection and editing systems to register the digital data to the Universal Transverse Mercator (UTM) grid coordinates. An ARC/INFO coverage of the Q3 Flood Data was generated and used to create the Q3-DLG file. The Q3 Flood Data were checked for position and attribute accuracy by comparing plots of the digital data to the source graphic and by symbolized display on an interactive computer system. Selected attributes that could not be visually verified were individually queried. In addition, an ARC/INFO  Arc Macro Language (AML) software program was applied to the dataset to test the attributes against a master set of valid attributes for the specific data category and a complete set of valid attribute combinations. Source graphics were revised to reflect updates effected by Letters of Map Change (Letter of Map Revision [LOMR], Letter of Map Amendment [LOMA]). These revisions were included in the Q3 Flood Data if they were mappable at the publication scale of the source graphic. Once final, the ARC/INFO coverage is projected into a geographic grid system, using decimal degree latitude and longitude coordinates and then converted into an ARC/INFO Export file.
                              
Process Datemultiple dates


Process Contact
Contact Information
Contact Organization Primary
Contact OrganizationFederal Emergency Management Agency, Mitigation Directorate
Contact Address
Address Typemailing and physical address
Address500 C Street SW
CityWashington
State or ProvinceDC
Postal Code20472
CountryUNITED STATES

Contact Voice Telephone(800) 358-9616

Process Step
Process Description
                                The Maine Office of GIS completed the conversion of all final data layers from NAD27 to NAD83 in July 1999.  All the data layers were converted using the ArcInfo (version 7.2.1) NADCON conversion and the "project" command.  All data was copied to double precision, projected to NAD83, and then copied back to single precision.  It was decided to keep the NAD27 quad structure instead of generating new quad boundaries from NAD83 coordinates - all indexes (quads) were projected to NAD83 by using the same process previously described.  All MEGIS data libraries in ArcInfo Librarian were repopulated using the NAD83 indexes and data.
                              
Process Date1999-07-01


Process Contact
Contact Information
Contact Organization Primary
Contact Organization(MEGIS) Maine Office of Geographic Information Systems
Contact PersonDavid Kirouac
Contact Address
Address Typemailing and physical address
AddressMEGIS 174 SHS
CityAugusta
State or ProvinceME
Postal Code04330
CountryUNITED STATES

Contact Voice Telephone(207) 215-6936
Contact Electronic Mail Addressdavid.kirouac@maine.gov
Hours of Service8:00 AM - 4:00 PM

Cloud Cover0


Spatial Data Organization 

Indirect Spatial Reference Method
sample Penobscot County


Direct Spatial Reference MethodVector


Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object TypeArea chain
Point and Vector Object Count3101

Spatial Reference 

Horizontal Coordinate System Definition
Planar
Grid Coordinate System
Grid Coordinate System NameUniversal Transverse Mercator 1983
Universal Transverse Mercator
UTM Zone Number19
Transverse Mercator
Scale Factor at Central Meridian0.9996
Longitude of Central Meridian-69
Latitude of Projection Origin0
False Easting500000
False Northing0

Planar Coordinate Information
Planar Coordinate Encoding MethodCoordinate Pair
Coordinate Representation
Abscissa Resolution1
Ordinate Resolution1

Geodetic Model
Horizontal Datum NameNorth American Datum of 1983
Ellipsoid NameGeodetic Reference System 80
Semi-major Axis6378137
Denominator of Flattening Ratio298.257

Entities and Attributes 

Detailed Description
Entity Type
Entity Type LabelFIRM
Entity Type Definition
polygon feature class
Entity Type Definition SourceEnivronmental Research Systems Institute, Inc. (ESRI)

Attribute
Attribute LabelCOBRA
Attribute Definition
Undeveloped Coastal Barrier Area- this item indicates whether the area is inside or outside of a designated Coastal Barrier Area or Otherwise Protected Area. Only the extents of the Coastal Barrier Resources Act area boundaries are portrayed in the Q3 Flood Data files. The boundaries between Coastal Barrier Resources Act areas and Otherwise Protected Areas and between areas with different designation dates are not included in the Q3 Flood Data files. Users should refer to the FIRM for such information.
Attribute Definition SourceFEMA FIRM Multiple Codes refer to "Q3 Flood Data Specifications" available at <http://msc.fema.gov/MSC/q3users.htm>
Attribute Domain Values
Enumerated Domain
Enumerated Domain ValueCOBRA_IN
Enumerated Domain ValueCOBRA_OUT
Enumerated Domain Value Definition
An area designated as an Undeveloped Coastal Barrier Area or Otherwise Protected Area in which flood insurance is unavailable for structures newly built or substantially improved.
Enumerated Domain Value Definition
An area outside a designated Undeveloped Coastal Barrier Area or Otherwise Protected Area in which flood insurance is unavailable for structures newly built or substantially improved.
Attribute Measurement Frequency
                                Unknown
                              

Attribute
Attribute LabelCOMMUNITY
Attribute Definition
identifies a county, city, or other community responsible for floodplain management (numeric value assigned by FEMA)
Attribute Definition SourceFEMA FIRM
Attribute Domain Values
Range Domain
Range Domain Minimum0
Range Domain Maximum9999
Attribute Measurement Frequency
                                Unknown
                              

Attribute
Attribute LabelCO_FIPS
Attribute Definition
county FIPS code
Attribute Definition SourceFederal Information Processing Standard (FIPS), National Institute of Standards & Technology (NIST)
Attribute Domain Values
Enumerated Domain
Enumerated Domain Value005
Enumerated Domain Value009
Enumerated Domain Value011
Enumerated Domain Value017
Enumerated Domain Value019
Enumerated Domain Value023
Enumerated Domain Value027
Enumerated Domain Value029
Enumerated Domain Value031
Enumerated Domain Value Definition
Cumberland County
Enumerated Domain Value Definition
Hancock County
Enumerated Domain Value Definition
Kennebec County
Enumerated Domain Value Definition
Oxford County
Enumerated Domain Value Definition
Penobscot County
Enumerated Domain Value Definition
Sagadahoc County
Enumerated Domain Value Definition
Waldo County
Enumerated Domain Value Definition
Washington County
Enumerated Domain Value Definition
York County
Codeset Domain
Codeset NameFederal Information Processing Standard (FIPS)
Codeset SourceNational Institute of Standards and Technology (NIST)
Attribute Measurement Frequency
                                Unknown
                              

Attribute
Attribute LabelFIPS
Attribute Definition
standard 5-digit state and county FIPS code
Attribute Definition SourceFederal Information Processing Standard (FIPS), National Institute of Standards & Technology (NIST)
Attribute Domain Values
Codeset Domain
Codeset NameFederal Information Processing Standard (FIPS)
Codeset SourceNational Institute of Standards and Technology (NIST)

Attribute
Attribute LabelFIRM_PANEL
Attribute Definition
Eleven-digit alpha-numeric code that identifies portion of community covered or not covered by a FIRM panel.
Attribute Definition SourceFEMA FIRM, code comprised of a unique alpha-numeric sequence based on FIPS and FEMA Community and Panel identification numbers
Attribute Measurement Frequency
                                Unknown
                              

Attribute
Attribute LabelFLOODWAY
Attribute Definition
channel, river or watercourse reserved for flood discharge
Attribute Definition SourceFEMA FIRM, multiple codes refer to "Q3 Flood Data Specifications" available at <http://msc.fema.gov/MSC/q3users.htm> for additional information
Attribute Domain Values
Enumerated Domain
Enumerated Domain ValueFW
Enumerated Domain Value 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
Attribute LabelLAT
Attribute Definition
origin latitude (degrees) of 7.5-minute quadrangle
Attribute Definition SourceUSGS quadrangle Index
Attribute Domain Values
Range Domain
Range Domain Minimum+0000
Range Domain Maximum+0090

Attribute
Attribute LabelLONG
Attribute Definition
origin longitude (degrees) of 7.5-minute quadrangle
Attribute Definition SourceUSGS quadrangle Index
Attribute Domain Values
Range Domain
Range Domain Minimum-0180
Range Domain Maximum+0180

Attribute
Attribute LabelPANEL
Attribute Definition
FIRM panel number and suffix
Attribute Definition SourceFEMA FIRM, code comprised of a unique alpha-numeric sequence based on FIPS and FEMA Community and Panel identification numbers

Attribute
Attribute LabelPANEL_TYP
Attribute Definition
type of FIRM panel represented
Attribute Definition SourceFEMA FIRM, multiple codes refer to "Q3 Flood Data Specifications" available at <http://msc.fema.gov/MSC/q3users.htm> for additional information
Attribute Domain Values
Enumerated Domain
Enumerated Domain ValueCBPP
Enumerated Domain ValueCBNP
Enumerated Domain ValueAOPN
Enumerated Domain ValueUNMC
Enumerated Domain Value 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 it's suffix.
Enumerated Domain Value Definition
The portion of a community covered by a community based map sheet (panel) that is not printed. The FIRM panel is further identified by its FIRM panel number, and its suffix.
Enumerated Domain Value Definition
Any unpaneled areas of a participating county. It should be used to identify any areas that fall within a participating community but outside of the defined paneling scheme. It should not be confused with the Unmapped Community attribute, which should be used for unmapped or non-participating communities.
Enumerated Domain Value Definition
A jurisdiction that has not been mapped or identified by the National Flood Insurance Program (NFIP). It may be applied to a jurisdiction that has no maps because it has no Special Flood Hazard Area, or it may be applied to a jurisdiction that is not identified by the NFIP or is not participating in the NFIP.

Attribute
Attribute LabelPCOMM
Attribute Definition
FIRM community/county identifier
Attribute Definition SourceFEMA FIRM, code comprised of a unique alpha-numeric sequence based on FIPS and FEMA Community and Panel identification numbers

Attribute
Attribute LabelQUAD
Attribute Definition
USGS 7.5 minute quadrangle identifier
Attribute Definition SourceUSGS quadrangle Index
Attribute Domain Values
Unrepresentable Domain
Unique sequence based on latitude and longitude

Attribute
Attribute LabelQUAD_UNIT
Attribute Definition
index number to 7.5 minute quadrangle
Attribute Definition SourceUSGS quadrangle Index
Attribute Domain Values
Unrepresentable Domain
Unique numeric sequence

Attribute
Attribute LabelSFHA
Attribute Definition
in/out of flood zone designation indicates if the area is a Special Flood Hazard Area and corresponds to ZONE types
Attribute Definition Sourcedetermined from data topology
Attribute Domain Values
Enumerated Domain
Enumerated Domain ValueIN
Enumerated Domain ValueOUT
Enumerated Domain Value Definition
area located within Special Flood Hazard Area (SFHA)
Enumerated Domain Value Definition
area located outside of SFHA

Attribute
Attribute LabelSTATE
Attribute Definition
state FIPS code
Attribute Definition SourceFederal Information Processing Standard (FIPS), National Institute of Standards & Technology (NIST)
Attribute Domain Values
Codeset Domain
Codeset NameFederal Information Processing Standard (FIPS)
Codeset SourceNational Institute of Standards & Technology

Attribute
Attribute LabelST_FIPS
Attribute Definition
state FIPS code
Attribute Definition SourceFederal Information Processing Standard (FIPS), National Institute of Standards & Technology (NIST)
Attribute Domain Values
Codeset Domain
Codeset NameFederal Information Processing Standard (FIPS)
Codeset SourceNational Institute of Standards and Technology (NIST)

Attribute
Attribute LabelSYMBOL
Attribute Definition
polygon shade symbols for graphic output based on polygon codes for ZONE, FLOODWAY, and COBRA
Attribute Definition Source(Users should note that in order to replicate these colors, a Q3 Shadeset must be installed.) <http://msc.fema.gov/MSC/q3users.htm> for additional information

Attribute
Attribute LabelZONE
Attribute Definition
flood hazard zone designation
Attribute Definition SourceFEMA FIRM, multiple Codes refer to "Q3 Flood Data Specifications" available at <http://msc.fema.gov/MSC/q3users.htm> for additional information
Attribute Domain Values
Enumerated Domain
Enumerated Domain ValueA
Enumerated Domain ValueAE
Enumerated Domain ValueAO
Enumerated Domain ValueAH
Enumerated Domain ValueVE
Enumerated Domain ValueX500
Enumerated Domain ValueX
Enumerated Domain ValueANI
Enumerated Domain ValueUNDES
Enumerated Domain ValueD
Enumerated Domain Value Definition
An area inundated by 100-year flooding, for which no Base Flood Elevations (BFES) have been determined; IN Special Flood Hazard Area (SFHA).
Enumerated Domain Value Definition
An area inundated by 100-year flooding, for which Base Flood Elevations (BFES) have been determined; IN Special Flood Hazard Area (SFHA).
Enumerated Domain Value Definition
An area inundated by 100-year flooding (usually sheet flow on sloping terrain), for which average depths have been determined; flood depths range from 1 to 3 feet; IN Special Flood Hazard Area (SFHA).
Enumerated Domain Value Definition
An area inundated by 100-year flooding (usually an area of ponding), for which Base Flood Elevations have been determined; flood depths range from 1 to 3 feet; IN Special Flood Hazard Area (SFHA).
Enumerated Domain Value Definition
An area inundated by 100-year flooding with velocity hazard (wave action); Base Flood Elevations (BFES) have been determined; IN Special Flood Hazard Area (SFHA).
Enumerated Domain Value Definition
An area inundated by 500-year flooding; an area inundated by 100-year 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 100-year flooding; OUT Special Flood Hazard Area (SFHA).
Enumerated Domain Value Definition
An area that is determined to be outside the 100- and 500-year floodplains; OUT Special Flood Hazard Area (SFHA).
Enumerated Domain Value Definition
An area that is located within a community or county that is not mapped on any published FIRM; OUT Special Flood Hazard Area (SFHA).
Enumerated Domain Value Definition
A body of open water, such as a pond, lake, ocean, etc., located within a community's jurisdictional limits that has no defined flood hazard; OUT Special Flood Hazard Area (SFHA).
Enumerated Domain Value Definition
An area of undetermined but possible flood hazards; OUT Special Flood Hazard Area (SFHA).

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.
                          
Entity and Attribute Detail Citation
                            The FEMA "Q3 Flood Data Specifications" contains a detailed description of each attribute code and a reference to other relevant information <http://msc.fema.gov/MSC/q3users.htm>

The  ArcView shapefile and ArcGIS geodatabase formats, commonly used for Maine GIS data, carry default identifiers and attributes that are software generated and/or important for internal recordkeeping. These are listed here to avoid repetition for every layer, and may not be repeated in the attribute descriptions and definitions of each layer. Common software generated identifiers and attributes in Maine GIS data include: FID (feature identifier), Shape (feature geometry), OBJECTID and SHAPE_lengt.  In addition, most GIS formats will carry fields for PERIMETER, AREA and/or LENGTH according to feature geometry. These fields are typically available by default, with the units based on coordinate system or projection units of GIS data. Most GIS software packages also provide a means to calculate these values. It is important to test any columns containing PERIMETER, AREA or LENGTH values before using them for analysis purposes. These important values can be carried from format to format and become out-dated. Verify that the values are correct. Also, in your GIS software, please view the properties of data layers for the map units used to calculate these fields, and for the units set for display purposes.
                          

Distribution Information 1 

Distributor
Contact Information
Contact Organization Primary
Contact Organization(MEGIS) Maine Office of Geographic Information Systems
Contact PersonGIS Coordinator
Contact PositionGIS Coordinator
Contact Address
Address Typemailing address
AddressState House Station 174
CityAugusta
State or ProvinceME
Postal Code04333-0174
CountryUNITED STATES

Contact Voice Telephone207 624-7700
Contact Facsimile Telephone207 287-3842
Hours of ServiceMonday through Friday 0800 - 1700 EST

Resource Descriptionhttp://megis.maine.gov/catalog/
Distribution Liability
                        Users must assume responsibility to determine the usability of this data for their purposes. Although these data have been processed successfully on a computer system at the Maine Office of Geographic Information Systems, no warranty expressed or implied is made by MEGIS regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. Neither the Maine Office of Geographic Information Systems, nor any of its contributors, is liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets.
                      
Standard Order Process
Digital Form
Digital Transfer Information
Format NameESRI Shapefile
Format Version NumberARC Version 9.x
Format Specification
ArcView Shapefile Format
Format Information Content
MEGIS has made all vector layers, in the Maine GIS Internet Data Catalog, available in ESRI's ArcView shapefile format. A shapefile is a simple non-topological format that stores the geometry and attribute information for a set of geographic features as a set of vector (point, line, polygon) coordinates. Shapefiles draw quickly and directly in ArcView, ArcGIS, ArcExplorer. Shapefiles are a compatible data type for many other types of GIS software. Three files are fundamental to each shapefile: .shp stores the feature geometry (shape and location information); .shx stores the index of the feature geometry; .dbf a dBASE (TM) file stores the attribute information for the features. Other index files may be created to help speed analysis and query: these file formats are .sbn .sbx .ain .aix .fbn and .fbx. In addition you may find projection .prj, and metadata .xml, files associated with shapefiles.
File Decompression TechniqueData available from this website is in .zip compressed format. WinZip is a Windows based, PKZip-compatible compression utility. You will need a program like this to extract the data. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/.

Digital Transfer Option
Online Option
Computer Contact Information
Network Address
Network Resource Namehttp://megis.maine.gov/catalog/

Access Instructions
                                        These data are available to Internet browsers for download from the Maine GIS Internet Data Catalog - http://megis.maine.gov/catalog/


Data available from this website is in .zip compressed format. WinZip is a Windows based, PKZip-compatible compression utility. You will need a program like this to extract the data. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/

If you are not already a GIS user, free software for viewing these files is available from Environmental Systems Research Institute, Inc. (ESRI) - www.esri.com

See http://megis.maine.gov/links/ for a link to ArcExplorer 9.x .
                                      
FeesData may be downloaded from Maine GIS Internet Data Catalog at no charge.
TurnaroundData is available for immediate download from the Maine GIS Internet Data Catalog.


Technical Prerequisites
If you are not already a GIS user, free software for viewing these files is available from Environmental Systems Research Institute, Inc. (ESRI) http://www.esri.com/ You may also see http://megis.maine.gov/links/ for a link to ArcExplorer 9.x
Available Time Period
Time Period Information
Range of Dates/Times
Beginning Date1996-01-01
Beginning TimeUnknown
Ending DatePresent
Ending TimeUnknown


Distribution Information 2 

Distributor
Contact Information
Contact Organization Primary
Contact OrganizationMaine Office of Geographic Information Systems
Contact PositionGIS Coordinator
Contact Address
Address Typemailing address
AddressState House Station 174
CityAugusta
State or ProvinceME
Postal Code04333-0174
CountryUNITED STATES

Contact Voice Telephone(207) 624-7700
Contact Facsimile Telephone(207) 287-3842
Hours of ServiceMonday through Friday 0800 - 1700 EST

Distribution Liability
                        Users must assume responsibility to determine the usability of this data for their purposes.
                      
Standard Order Process
Digital Form
Digital Transfer Information
Format NameARCSDE
Format Version NumberArcSDE 9.x
Format Information Content
Oracle 9i

Digital Transfer Option
Online Option
Access Instructions
                                        Please contact the Maine Office of GIS (MEGIS) for access instructions.
                                      
FeesAccess is available through Maine's wide area network; WAN users may contact the Maine Office of Information Technology, Maine Office of Geographic Information Systems (MEGIS) for a login.


Metadata Reference 

Metadata Date1996-07-29
Metadata Review Date2010-01-14
Metadata Contact
Contact Information
Contact Organization Primary
Contact Organization(MEGIS) Maine Office of Geographic Information Systems
Contact PersonGIS Coordinator
Contact PositionGIS Coordinator
Contact Address
Address Typemailing address
AddressState House Station 174
CityAugusta
State or ProvinceME
Postal Code04333-0174
CountryUNITED STATES

Contact Voice Telephone207 624-7700
Contact Facsimile Telephone207 287-3842
Hours of ServiceMonday through Friday 0800 - 1700 EST

Metadata Standard NameFGDC Content Standards for Digital Geospatial Metadata
Metadata Standard VersionFGDC-STD-001-1998


Metadata Access ConstraintsNone
Metadata Use Constraints
None