Reserve Special Flood Hazard Areas (SFHA)

Metadata from the RGIS Metadata Repository

Identification Information

Title Reserve Special Flood Hazard Areas (SFHA)
Date 2013-12-03
Date Type Publication
Cited Responsible Party
Organization Name Earth Data Analysis Center
Role identify
Presentation Form vector digital data
Abstract This vector dataset depicts the 1% annual flood boundary (otherwise known as special flood hazard area or 100 year flood boundary) for its specified area. The data set was generated by heads-up-digitizing flood insurance rate maps available from FEMA's Map Service Center. These maps are for informational use only and should not be used for engineering or insurance purposes. Contact your local floodplain administrator for more information.
Purpose This vector file is intended to be used for planning and mitigation purposes. It is not appropriate to use for engineering or insurance purposes.
Status Complete
Point of 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
Maintenance and Update Frequency As Necessary
Descriptive Keywords special flood hazard area, SFHA, 100 Year flood zone, 1% annual chance flood zone, flood insurance rate map
Access Constraints None
Use Constraints None
Language English
Topic Category boundaries
Extent
Geographic Bounding Box
West Bound -108.765968
East Bound -108.756318
North Bound 33.716108
South Bound 33.701677
Temporal Extent
DateTime 2013-12-13
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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
Geometric Object Type GT-polygon composed of chains
Geometric Object Count 3
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Data Quality Information

Attribute Accuracy Report
Report This data set contains no additional attributes other than those added by ESRI during the shapefile creation process.
Quantitative Attribute Accuracy Assessment
Attribute Accuracy Value
Attribute Accuracy Explanation
Horizontal Positional Accuracy Report
Report Data was heads up digitized off of georeferenced and mosaiced FEMA FIRM Maps from the Mapping Service Center. Many of these maps were converted by letter from original HUD maps from the 1960's and 1970's. No positional accuracy should be assumed from this dataset.
Quantitative Horizontal Positional Accuracy Assessment
Horizontal Positional Accuracy Value
Horizontal Positional Accuracy Explanation
Vertical Positional Accuracy Report
Report This dataset contains little to no vertical data.
Quantitative Vertical Positional Accuracy Assessment
Vertical Positional Accuracy Value
Vertical Positional Accuracy Explanation
Logical Consistency Report unknown
Completeness Report Data contained in this shapefile is complete to the best of our knowledge.
Lineage
Source Information
Source Citation
Source Scale Denominator
Type of Source Media online
Source Time Period of Content
DateTime 2013-11-30
Source Currentness Reference publication date
Source Citation Abbreviation FIRM
Source Contribution spatial information
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
Process Step
Process Description Special Flood Hazard Boundaries were heads-up-digitized using ESRI ArcGIS Version 10.1.
Process Date 2013-11-15
Process Time
Process Contact
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Metadata Reference Information

File Identifier 59f1a742-27f5-4e18-b318-ab912eb551da
Metadata Language English
Hierarchy Level Dataset
Date Stamp 2019-04-25
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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