Reserve Flood Insurance Rate Map (FIRM)

Metadata from the RGIS Metadata Repository

Identification Information

Title Reserve Flood Insurance Rate Map (FIRM)
Date 2013-12-04
Date Type Publication
Cited Responsible Party
Organization Name Federal Emergency Management Agency
Role identify
Presentation Form remote-sensing image
Abstract This dataset contains the scanned, paper flood insurance rate maps (FIRMs) developed by FEMA and available from the Mapping Service Center.
Purpose These maps were originally intended for insurance purposes but some of them are multiple decades old and may be better suited to hazard mitigation planning. Consult your local floodplain administrator for more information.
Status Complete
Point of Contact
Individual Name
Organization Name Federal Emergency Management Agency
Position Name
Role Point of contact
Voice 1-877-FEMA-MAP
Facsimile
Address
Delivery Point 500 C Street, S.W.
City Washington
Administrative Area District of Columbia
Postal Code 20472
Country USA
Electronic Mail Address fema-mscservice@dhs.gov
Maintenance and Update Frequency none planned
Descriptive Keywords special flood hazard area, SFHA, 100 Year flood zone, 1% annual chance flood zone, flood insurance rate map, FIRM
Access Constraints none.
Use Constraints These maps were downloaded from FEMA's MSC, georeferenced, and then mosaiced when applicable. They should not be used for engineering or insurance purposes. Consult your local floodplain administrator for guidance.
Language English
Topic Category imageryBaseMapsEarthCover
Extent
Geographic Bounding Box
West Bound -108.76693
East Bound -108.75507
North Bound 33.716618
South Bound 33.700953
Temporal Extent
DateTime 2013-11-30
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Distribution Information

Distributor
Individual Name
Organization Name Earth Data Analysis Center
Position Name Clearinghouse Manager
Role Point of contact
Voice 505-277-3622 ext. 230
Facsimile 505-277-3614
Address
Delivery Point MSC01 1110
Delivery Point 1 University of New Mexico
City Albuquerque
Administrative Area NM
Postal Code 87131-0001
Country USA
Electronic Mail Address clearinghouse@edac.unm.edu
Transfer Options
Online Resource ZIP
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Spatial Reference Information

Spatial References
Spatial Reference D WGS 1984
Online Reference EDAC:Unknown
Spatial Reference WGS 1984
Online Reference EPSG:4326
Spatial Reference WGS 1984 Web Mercator Auxiliary Sphere
Online Reference EPSG:Unknown
Indirect Spatial Reference New Mexico
Row Count 6253
Column Count 3938
Vertical Count
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Data Quality Information

Attribute Accuracy Report
Report unknown
Quantitative Attribute Accuracy Assessment
Attribute Accuracy Value
Attribute Accuracy Explanation
Horizontal Positional Accuracy Report
Report unknown
Quantitative Horizontal Positional Accuracy Assessment
Horizontal Positional Accuracy Value
Horizontal Positional Accuracy Explanation
Logical Consistency Report unknown
Completeness Report Complete
Lineage
Process Step
Process Description Appropriate FIRMs were downloaded from the FEMA Mapping Service Center
Process Date 2013-06-01
Process Time
Process Contact
Process Step
Process Description Individual FIRMs were georeferenced in ERDAS IMAGINE. This process required matching control points on the FIRM maps to the same points on a reference image that that had previously been georeferenced. Control points are usually well mapped features such as drainage and road intersections and Public Land Survey System intersections. The statewide 1:24,000 topographic quad map mosaic was selected as the reference image because both these maps and the FIRM maps had similar features to map. The process consisted of opening two viewers side by side on the monitor and displaying the topo mosaic on one viewer and the same area of the FIRM map in the second viewer. Then a feature such as a drainage intersection was selected on the FIRM map and the line and column coordinates of that feature were placed in a table. Then the same feature was selected from the topo mosaic and the actual map coordinates of the feature were entered into the table next to the FIRM line and column coordinate. Then a second feature was located on both viewers and then a third and so on. The features were selected to have a relatively even distribution over the FIRM map area. When all features had been selected the IMAGINE software generates a transformation matrix which calculates the best fit of the FIRM control points to the topo mosaic points. If the operator is satisfied with the calculated fit the command is then given to resample the FIRM map to match the topo mosaic and generate a new FIRM map image which now has map coordinates.
Process Date 2013-06-15
Process Time
Process Contact
Process Step
Process Description When all of the maps for a county had been georeferenced it was possible to trim off all of the extraneous edge data from the maps and mosaic them together based on the georeferenced information present in each of the maps.
Process Date 2013-08-01
Process Time
Process Contact
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Metadata Reference Information

File Identifier ae39a7b8-6ff1-4328-8268-f3b6d53fe09e
Metadata Language English
Hierarchy Level Dataset
Date Stamp 2024-03-28
Metadata Standard Name ISO 19115:2003
Metadata Standard Version 1.0
Metadata Contact
Individual Name
Organization Name Earth Data Analysis Center
Position Name Clearinghouse Manager
Role Point of contact
Voice 505-277-3622 ext. 230
Facsimile 505-277-3614
Address
Delivery Point MSC01 1110
Delivery Point 1 University of New Mexico
City Albuquerque
Administrative Area NM
Postal Code 87131-0001
Country USA
Electronic Mail Address clearinghouse@edac.unm.edu
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