EmergencyFlood_DFIRMT

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: VT Center for Geographic Information

Publication_Date: various

Publication_Time: unknown

Title: EmergencyFlood_DFIRMT

Edition: 2014A

Geospatial_Data_Presentation_Form: Vector data

Series_Information:

Series_Name: DIGITAL FLOOD INSURANCE RATE MAP DATABASE (town-based version)

Issue_Identification: 2014A

Publication_Information:

Publication_Place: Washington, DC

Publisher: Federal Emergency Management Agency

Other_Citation_Details: Tile Structure - TOWN

Other_Citation_Details: ./<town_dataset>/Document/ metadata file

Online_Linkage: www.fema.gov/msc

Description:

Abstract:

The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the State Plane projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.
Refer to the individual metadata records for each town-based DFIRM dataset. These are stored in the ./<town_dataset>/Document folder.
This dataset is currently limited to the following towns: - Bradford - Jay - Montgomery - Newbury - Wolcott - Hardwick - Stowe
Additional flood mapping information is available from the following web site
<http://www.fema.gov/plan/prevent/fhm/index.shtm> <http://www.fema.gov/plan/prevent/fhm/ot_main.shtm#5> <http://www.fema.gov/media/fhm/firm/ot_firm.htm>

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 Flood Disaster Protection Act of 1973. 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 coverage offered through the NFIP. The DFIRM Database presents the flood risk information depicted on the FIRM in a digital format suitable for use in electronic mapping applications. The DFIRM database is a subset of the Digital FIS database that serves to archive the information collected during the FIS.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: various

Time_of_Day: Unknown

Currentness_Reference: FIRM and FIS effective date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Irregular

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -73.454162

East_Bounding_Coordinate: -71.465281

North_Bounding_Coordinate: 45.018361

South_Bounding_Coordinate: 42.722789

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: FEMA Flood Hazard Zone

Theme_Keyword: DFIRM

Theme_Keyword: Digital Flood Insurance Rate Map

Theme_Keyword: Special Flood Hazard Area

Theme_Keyword: DFIRM Database

Theme_Keyword: NFIP

Theme_Keyword: SFHA

Theme_Keyword: Flood Insurance Rate Map

Theme_Keyword: FIRM

Theme_Keyword: Riverine Flooding

Theme_Keyword: Base Flood Elevation

Theme_Keyword: Floodway

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: None

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Vermont

Place_Keyword: Bradford

Place_Keyword: Jay

Place_Keyword: Montgomery

Place_Keyword: Newbury

Place_Keyword: Wolcott

Place_Keyword: Hardwick

Place_Keyword: Stowe

Access_Constraints:

VCGI, the State of Vermont, and FEMA make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.

Use_Constraints:

The hardcopy FIRM and DFIRM and the accompanying FISs are the official designation of SFHAs and Base Flood Elevations (BFEs) for the NFIP. For the purposes of the NFIP, changes to the flood risk information published by FEMA may only be performed by FEMA and through the mechanisms established in the NFIP regulations (44 CFR Parts 59-78). These digital data are produced in conjunction with the hardcopy FIRMs and generally matches the hardcopy map exactly. However the hardcopy flood maps and flood profiles are the authoritative documents for the NFIP. Acknowledgement of FEMA would be appreciated in products derived from these data.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Federal Emergency Management Agency

Contact_Position: Federal Insurance and Mitigation Administration

Contact_Address:

Address_Type: mailing address

Address: 500 C Street, S.W.

City: Washington

State_or_Province: District of Columbia

Postal_Code: 20472

Country: USA

Contact_Voice_Telephone: 1-800-358-9616

Contact_Electronic_Mail_Address: www.fema.gov/msc

Native_Data_Set_Environment:

Original data development environment varies. Finishing of the data is done using ESRI's ArcGIS software.

Browse_Graphic:

Browse_Graphic_File_Name:

<http://vcgi.vermont.gov/warehouse/?servicename=DATAWARE_VCGI&VERSION=1.1.1&request=getmap&BBOX=-73.45416,42.72279,-71.46528,45.018356&SRS=EPSG:4326&LAYERS=EmergencyFlood_DFIRMT&WIDTH=300&HEIGHT=400&FORMAT=image/gif>

Browse_Graphic_File_Description: GIF

Browse_Graphic_File_Type: GIF

Data_Set_Credit: FEMA

Security_Information:

Security_Classification_System: N/A

Security_Classification: Unclassified

Security_Handling_Description: No Security Considerations

Native_Data_Set_Environment: Arc/Info

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The DFIRM Database consists of community-based vector files and associated attributes produced in conjunction with the hard copy FEMA FIRM. The published effective FIRM and DFIRM maps are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Specifications for Flood Hazard Mapping Partners. Attribute accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of FEMA's DFIRM database was also performed. To obtain more detailed information in areas where Base Flood Elevations (BFEs) and/or floodways have been determined, users are encouraged to consult the Flood Profiles and Floodway Data and/or Summary of Stillwater Elevations tables contained within the FIS report that accompanies this DFIRM database. Users should be aware that BFEs shown in the S_BFE table represent rounded whole-foot elevations. These BFEs are intended for flood insurance rating purposes only and should not be used as the sole source of flood elevation information. Accordingly, flood elevation data presented in the FIS report must be used in conjunction with the FIRM for purposes of construction and/or floodplain management. The 1-percent-annual- chance water-surface elevations shown in the S_XS table match the regulatory elevations shown in the FIS report.

Logical_Consistency_Report:

When FEMA revises an FIS, adjacent studies are checked to ensure agreement between flood elevations at the boundaries. Likewise flood elevations at the confluence of streams studied independently are checked to ensure agreement at the confluence. The FIRM and the FIS are developed together and care is taken to ensure that the elevations and other features shown on the flood profiles in the FIS agree with the information shown on the FIRM. However, the elevations as shown on the FIRM are rounded whole-foot elevations. They must be shown so that a profile recreated from the elevations on the FIRM will match the FIS profiles within one half of one foot.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The DFIRM Database consists of community-based vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and DFIRM are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Specifications for Flood Hazard Mapping Partners. Horizontal accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of FEMA's DFIRM database was also performed.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The DFIRM Database consists of community-based vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and DFIRM maps are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Specifications for Flood Hazard Mapping Partners. Vertical accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of FEMA's DFIRM database was also performed.

Lineage:

Process_Step:

Process_Description:

The DFIRM Database is compiled in conjunction with the hardcopy FIRM and the final FIS report. The specifics of the hydrologic and hydraulic analyses performed are detailed in the FIS report. The results of these studies are submitted in digital format to FEMA. These data and unrevised data from effective FIRMs are compiled onto the base map used for DFIRM publication and checked for accuracy and compliance with FEMA standards.

Refer to metadata in each town-based dataset ./document folder for details specific to each
dataset.

Source_Used_Citation_Abbreviation: DOQ2, FIS1, STUDY1, USGS1

Process_Step:

Process_Description:

Stowe, Hinesburg, and West Rutland data loaded into the VGIS Data Warehouse.

Process_Date: 20060217

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Tom Williams

Contact_Organization: VCGI

Contact_Position: GIS Project Manager

Process_Step:

Process_Description:

Bradford, Jay, Montgomery, Newbury, Wolcott, and Hardwick data loaded into the VGIS Data Warehouse.

Process_Date: 20080618

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Steve Sharp

Contact_Organization: VCGI

Contact_Position: VCGI Database Administrator

Process_Step:

Process_Description:

Hinesburg and West Rutland were REMOVED from this data set because newer county-level data exists in those areas. The data set named EmergencyFlood_DFIRMC includes those newer county-level data sets.

Process_Date: 20140707

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Ivan Brown

Contact_Organization: VCGI

Contact_Position: VCGI Database Administrator

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: String

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Raster_Object_Information:

Raster_Object_Type: Pixel

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: State Plane Coordinate System

State_Plane_Coordinate_System:

SPCS_Zone_Identifier: 4400

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999964

Longitude_of_Central_Meridian: -72.500000

False_Easting: 500000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.001

Ordinate_Resolution: 0.001

Planar_Distance_Units: Meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137

Denominator_of_Flattening_Ratio: 1 / 298.25722210

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

The DFIRM Database is made up of several data themes containing both spatial and attribute information. These data together represent the current flood risk for the subject area as identified by FEMA. The attribute tables include SFHA locations, flood zone designations, BFEs, political entities, cross-section locations, FIRM panel information, and other data related to the NFIP.

Entity_and_Attribute_Detail_Citation:

Appendix L of FEMA's Guidelines and Specifications for FEMA Flood Hazard Mapping Partners contains a detailed description of each attribute code and a reference to other relevant information. <http://www.fema.gov/pdf/fhm/frm_gsal.pdf> Also check out this tutorial <http://www.fema.gov/media/fhm/firm/ot_firm.htm> You can find specific flood zone descriptions by skipping the intro. Once it has loaded click on the "Glossary" button on the top-right, then select "S-Z". You'll see the zone info there. The following tables are included in this data set: l_comm_info l_stn_start study_info s_bfe s_base_index s_firm_pan s_fld_haz_ar s_fld_haz_ln s_gen_struct s_label_ld s_pol_ar s_pol_ln s_quad_index s_xs s_label_pt

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: VT Center for Geographic Information

Contact_Address:

Address_Type: Mailing and Physical Address

Address: 58 South Main Street, Suite 2

City: Waterbury

State_or_Province: VT

Postal_Code: 05676

Country: USA

Contact_Voice_Telephone: 802/882-3000

Contact_TDD/TTY_Telephone: None

Contact_Facsimile_Telephone: 802/882-3001

Contact_Electronic_Mail_Address: info@vcgi.org

Hours_of_Service: 9am - 5pm, M-F

Resource_Description: EmergencyFlood_DFIRMT

Distribution_Liability:

VCGI and the State of Vermont make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: SHP

Format_Specification: ESRI Shapefile format (compressed to ZIP format)

Format_Information_Content: geospatial data

File_Decompression_Technique: ZIP decompression software

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<http://maps.vcgi.org/gisdata/vcgi/packaged_zips/EmergencyFlood_DFIRMT/>

Access_Instructions: Download from web site.

Offline_Option:

Offline_Media: CD-ROM/DVD

Fees:

No charge when downloading from the internet, and when no custom processing is required.

Ordering_Instructions:

Download from web site or mail-fax a copy of the VCGI 'Data Request Form' which is available from the VGIS web site <http://vcgi.vermont.gov/warehouse/order_forms>

Turnaround: About 5 days.

Custom_Order_Process:

Mail or Fax a copy of the VCGI 'Data Request Form' which is available from <http://vcgi.vermont.gov/warehouse/order_forms>

Technical_Prerequisites: ESRI Arc/Info, ArcView, or ArcExplorer software.

Available_Time_Period:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20080618

Time_of_Day: Unknown

Metadata_Reference_Information:

Metadata_Date: 20080618

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: VT Center for Geographic Information

Contact_Person: GIS Database Administrator

Contact_Address:

Address_Type: Mailing and Physical Address

Address: 58 South Main Street, Suite 2

City: Waterbury

State_or_Province: VT

Postal_Code: 05676

Country: USA

Contact_Voice_Telephone: 802/882-3000

Contact_TDD/TTY_Telephone: None

Contact_Facsimile_Telephone: 802/882-3001

Metadata_Standard_Name: FGDC Content Standards for Digital Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: Local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Security_Information:

Metadata_Security_Classification_System: N/A

Metadata_Security_Classification: Unclassified

Metadata_Security_Handling_Description: No security considerations