Identification_Information: Citation: Citation_Information: Originator: Federal Emergency Management Agency Publication_Date: 1999 Title: Louisiana Flood Zone Geospatial_Data_Presentation_Form: vector digital data Online_Linkage: http://msc.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 earth's surface using geographic projection and decimal degree coordinate system. The specifications for the horizontal control of Q3 Flood Data files are consistent with those required for mapping at a scale of 1:24000. The user is encouraged to refer to the 'Q3 FLOOD DATA SPECIFICATIONS' manual and the 'Q3 FLOOD DATA USERS GUIDE' for complete information on the technical details of the Q3 data, its attributes, its uses, and limitations. 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, the risk zones shown on the FIRMs are the basis for the establishment of premium rates for flood coverage offered through the NFIP. Q3 Flood Data files are intended to convey certain key features from the existing hard copy FIRM to provide users with automated flood risk data. Edge-matching errors, overlaps and deficiencies in coverage, and similar problems are not corrected during digitizing or post-processing. These data may be used to locate Special Flood Hazard Areas (SFHAs). More detailed information may be obtained from the paper FIRM. Supplemental_Information: This metadata document acts as a global metadata document for 37 individual parish 'Q3 Flood Zone' datasets. Not all Louisiana parishes have a Q3 Flood Zone dataset. The geographic bounds given in this document represents the geographic bounds of the entire state, rather the geographic bounds of any particular parish data set. The following list gives the list of parishes with Q3 data and the name of the corresponding shapefile. >Parish name Shapefile name >----------- -------------- >Acadia acadia >Allen allen >Ascension ascension >Assumption assumption >Avoyelles avoyelles >Bossier bossier >Calcasieu calcasieu >Cameron cameron >Catahoula catahoula >Concordia concordia >East Baton Rouge ebatonrouge >Franklin franklin >Grant grant >Iberia iberia >Iberville iberville >Jefferson jefferson >Lafayette lafayette >Lafourche laFourche >Livingston livingston >Madison madison >Natchitoches natchitoches >Orleans orleans >Ouachita ouachita >Plaquemines plaquemines >Pointe Coupee pointecoupee >Rapides rapides >St. Bernard stbernard >St. Charles StCharles >St. James StJames >St. John the Baptist StJohnBaptist >St. Landry StLandry >St. Martin stmartin >St. Mary StMary >St. Tammany StTammany >Tangipahoa tangipahoa >Terrebonne terrebonne >Vermilion vermilion Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1999 Currentness_Reference: Date the most current Q3 data were projected to geographic coordinates, NAD83 for release on the 'Louisiana GIS CD: A Digital Map of the State.' Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -93.929665 East_Bounding_Coordinate: -88.762901 North_Bounding_Coordinate: 33.019950 South_Bounding_Coordinate: 28.875240 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: FEMA Flood Hazard Zones Theme_Keyword: Q3 Flood Data Theme_Keyword: Q3 Coverage Theme_Keyword: Special Flood Hazard Areas Theme_Keyword: Digital Flood Insurance Rate Maps Place: Place_Keyword_Thesaurus: none Place_Keyword: Louisiana Access_Constraints: none Use_Constraints: none Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Louisiana Oil Spill Coordinator's Office Contact_Person: David Gisclair Contact_Position: Technical Assistance Program (TAP) Director Contact_Address: Address_Type: mailing address Address: Louisiana Oil Spill Coordinator's Office Address: Office of the Governor Address: P.O. Box 94095 City: Baton Rouge State_or_Province: LA Postal_Code: 70804 Contact_Voice_Telephone: (225) 219-5800 Contact_Facsimile_Telephone: (225) 219-5802 Contact_Electronic_Mail_Address: tapgis@linknet.idt.net Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: thumbnail graphic of East Baton Rouge parish data set Browse_Graphic_File_Type: GIF Data_Set_Credit: LOSCO gratefully acknowledges FEMA for providing the source data for production of this data set and LSU (Louisiana State University) for projecting these data to NAD83 coordinates. The Purpose, Logical_Consistency_Report and Completeness_Report part of these metadata came from metadata supplied with FEMA Q3 source data. Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.2.0.700 Data_Quality_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: 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 reflect 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 hydrological and hydraulic analysis. Both detailed and approximate analyses are employed. Generally, detailed analysis 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. The Q3 Flood Data coverages may be derived from DFIRM-DLGs, from FIRM- DLGs, from FIRMs digitized previously for emergency applications, or 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 their 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 of 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 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 horizontal positional sources and the requirements of their application. With increased frequency, large-scale spatial data sets are becoming widely available for computer-based geographic information systems. Q3 Flood Data may be used in combination with other digital spatial data, however, users should be aware that scalar enlargements do not enhance the relative accuracy of the Q3 Flood Data (i.e. 1:24000). Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Federal Emergency Management Agency Publication_Date: 199? Title: Q3 Flood Data, [Louisiana Parish Name] Type_of_Source_Media: computer file Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 199? Source_Currentness_Reference: Date of publication of each individual Q3 data set, or more appropriately, the range of publication dates of the sources FIRMs that went into each Q3 dataset. The metadata for each individual Q3 dataset should be consulted for this information. Source_Citation_Abbreviation: Q3 Source_Contribution: spatial and attribute information Process_Step: Process_Description: Q3 data for each parish was projected from geographic coordinates, NAD27 to geographic coordinates, NAD83 and converted to shapefile. Process_Date: 1999 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: LSU Department of Geography and Anthropology Contact_Person: Hampton Peele Contact_Address: Address_Type: mailing address Address: Louisiana State University City: Baton Rouge State_or_Province: LA Postal_Code: 70803 Contact_Voice_Telephone: (225)388-3455 Contact_Electronic_Mail_Address: hampton@lsu.edu Process_Step: Process_Description: Dataset copied. Source_Used_Citation_Abbreviation: Server=dogbert.er.usgs.gov; Service=5151; User=usgs; Version=SDE.DEFAULT Process_Step: Process_Description: merged all parish floodzone shapefiles to one representative shapefile and added parish field Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Chris Polloni Contact_Organization: US Geological Survey Contact_Position: Computer Specialist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700x2280 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: cpolloni@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: G-polygon Point_and_Vector_Object_Count: 24365 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000000 Longitude_Resolution: 0.000000 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Resolution: 1.000000 Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: la_floodzone_24k Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: FIPS Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: COMMUNITY Attribute: Attribute_Label: FIRM_PANEL Attribute_Definition: Area of feature in internal units squared. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: QUAD Attribute: Attribute_Label: ZONE Attribute: Attribute_Label: FLOODWAY Attribute: Attribute_Label: COBRA Attribute: Attribute_Label: SFHA Attribute: Attribute_Label: SYMBOL Attribute: Attribute_Label: PANEL_TYP Attribute: Attribute_Label: CO_FIPS Attribute: Attribute_Label: PCOMM Attribute: Attribute_Label: PANEL Attribute: Attribute_Label: LAT Attribute: Attribute_Label: LONG Attribute: Attribute_Label: QUAD_UNIT Attribute: Attribute_Label: AREA_SQM Attribute: Attribute_Label: PERIM_M Attribute: Attribute_Label: AREA_AC Attribute: Attribute_Label: PARISH Attribute_Definition: added Parish field to indicate data source Attribute_Domain_Values: Unrepresentable_Domain: character data set Overview_Description: Entity_and_Attribute_Overview: These data sets contain all the attributes of the Q3 Flood Zone Data source dataset. All of those attributes and the codes that appear in them are defined in the source listed for Entity_and_Attribute_Detail_Citation. As part of LSU data processing three additional attributes were added: area_sqm (area of polygon in square meters), perim_m (perimeter of polygon in meters), and area_ac (area of polygon in acres). Entity_and_Attribute_Detail_Citation: Q3 FLOOD DATA SPECIFICATIONS, Draft 1996, Federal Emergency Management Agency, Washington, D.C. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Louisiana Oil Spill Coordinator's Office Contact_Person: David Gisclair Contact_Position: Technical Assistance Program (TAP) Director Contact_Address: Address_Type: mailing address Address: Louisiana Oil Spill Coordinator's Office Address: Office of the Governor Address: P.O. Box 94095 City: Baton Rouge State_or_Province: LA Postal_Code: 70804 Contact_Voice_Telephone: (225) 219-5800 Contact_Facsimile_Telephone: (225) 219-5802 Contact_Electronic_Mail_Address: tapgis@linknet.idt.net Resource_Description: Downloadable Data Distribution_Liability: The data herein, including but not limited to geographic data, tabular data, analytical data, electronic data structures or files, are provided "as is" without warranty of any kind, either expressed or implied, or statutory, including, but not limited to, the implied warranties or merchantability and fitness for a particular purpose. The entire risk as to the quality and performance of the data is assumed by the user. No guarantee of accuracy is granted, nor is any responsibility for reliance thereon assumed. In no event shall the Louisiana Oil Spill Coordinator's Office (LOSCO) be liable for direct, indirect, incidental, consequential or special damages of any kind, including, but not limited to, loss of anticipated profits or benefits arising out of use of or reliance on the data. The LOSCO does not accept liability for any damages or misrepresentation caused by inaccuracies in the data or as a result of changes to the data caused by system transfers or other transformations or conversions, nor is there responsibility assumed to maintain the data in any manner or form. These data have been developed from the best available sources. Although efforts have been made to ensure that the data are accurate and reliable, errors and variable conditions originating from physical sources used to develop the data may be reflected in the data supplied. Users must be aware of these conditions and bear responsibility for the appropriate use of the information with respect to possible errors, scale, resolution, rectification, positional accuracy, development methodology, time period, environmental and climatic conditions and other circumstances specific to these data. The user is responsible for understanding the accuracy limitations of the data provided herein. The burden for determining fitness for use lies entirely with the user. The user should refer to the accompanying metadata notes for a description of the data and data development procedures. Although these data have been processed successfully on computers at the LOSCO, no guarantee, expressed or implied, is made by LOSCO regarding the use of these data on any other system, nor does the act of distribution constitute or imply any such warranty. Distribution of these data is intended for information purposes and should not be considered authoritative for navigational, engineering, legal and other site-specific uses. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Transfer_Size: 49.043 Metadata_Reference_Information: Metadata_Date: 20030908 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: 3001, Inc. Contact_Person: Mendi Johnson Contact_Position: GIS Analyst Contact_Address: Address_Type: mailing and physical address Address: 3655 SW 2nd Ave., Suite 3C City: Gainesville State_or_Province: FL Postal_Code: 32607 Contact_Voice_Telephone: (352) 379-3001 Contact_Facsimile_Telephone: (352) 377-4234 Contact_Electronic_Mail_Address: mjohnson@gnv.3001data.com Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile