floodzones_iberville_FEMA_1999

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Metadata:


Identification_Information:

Citation:
Citation_Information:
Originator: Federal Emergency Management Agency
Publication_Date: 1999
Title: floodzones_iberville_FEMA_1999
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage:
<http://lagic.lsu.edu/data/losco/floodzones_iberville_FEMA_1999.zip>
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 <URL:fema-spec.doc> and the 'Q3 FLOOD DATA USERS GUIDE' <URL:fema-userg.doc> 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: -91.701378
East_Bounding_Coordinate: -91.018890
North_Bounding_Coordinate: 30.497675
South_Bounding_Coordinate: 30.025293
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
Theme_Keyword: Land use cover
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: 150 Third Street, Suite 405
City: Baton Rouge
State_or_Province: LA
Postal_Code: 70801
Contact_Voice_Telephone: (225) 219-5800
Contact_Facsimile_Telephone: (225) 219-5802
Contact_Electronic_Mail_Address: <URL:mailto:david.gisclair@la.gov>
Browse_Graphic:
Browse_Graphic_File_Name: <URL:floodzones_iberville_FEMA_1999.gif>
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 XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.0.1324

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

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: 177

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

Entity_and_Attribute_Information:

Detailed_Description:
Entity_Type:
Entity_Type_Label: floodzones_iberville_FEMA_1999
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:
Attribute_Label: COMMUNITY
Attribute:
Attribute_Label: AREA_AC
Attribute:
Attribute_Label: FIRM_PANEL
Attribute:
Attribute_Label: QUAD
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: QUAD_UNIT
Attribute:
Attribute_Label: PERIM_M
Attribute:
Attribute_Label: AREA_SQM
Attribute:
Attribute_Label: ZONE_
Attribute:
Attribute_Label: Shape_Area
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: LONG_
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_Leng
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. <URL:fema-spec.doc>

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: 150 Third Street, Suite 405
City: Baton Rouge
State_or_Province: LA
Postal_Code: 70801
Contact_Voice_Telephone: (225) 219-5800
Contact_Facsimile_Telephone: (225) 219-5802
Contact_Electronic_Mail_Address: <URL:mailto:david.gisclair@la.gov>
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: 0.183
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://lagic.lsu.edu/data/losco/floodzones_iberville_FEMA_1999.zip>

Metadata_Reference_Information:

Metadata_Date: 20070821
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

This page is <http://lagic.lsu.edu/data/losco/floodzones_iberville_fema_1999.html>
LA Geographic Information Center (LAGIC)
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