Geodataset Name:       DFIRM_CBRS_FEB15
Geodataset Type:       SDE Feature Class
Geodataset Feature:    Polygon
Feature Count:         331

DATA SOURCE(S):                    Federal Emergency Management Agency
SCALE OF ORIGINAL SOURCE MAPS:     12000
GEODATASET EXTENT:                 State of Florida

PUBLICATION DATE:                  20150223
TIME PERIOD OF CONTENT:            Begin Date: 20010606    End Date: 20150223
DOWNLOAD LINK:                     http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES:

Datafile Name: DFIRM_CBRS_FEB15.DBF

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item	Item Description
OBJECTID	Internal feature number.
SHAPE	Feature geometry.
DFIRM_ID	Flood Risk Project Identifier. For a single-jurisdiction flood risk project, the value is composed of the 2-digit state FIPS code and the 4-digit FEMA CID code (e.g., 480001). For a countywide flood risk project, the value is composed of the 2-digit state FIPS code, the 3-digit county FIPS code, and the letter C (e.g., 48107C). Within each FIRM database, the DFIRM_ID value is identical. N/A = N/A
VERSION_ID	Version Identifier. Identifies the product version and relates the feature to standards according to which it was created. N/A = N/A
CBRS_ID	Primary key for table lookup. Assigned by table creator. N/A = N/A
CBRS_TYP	CBRS Type. The type code provides details of the types of prohibitions that apply to the area. Normally this would be a CBRS area or Otherwise Protected Area (OPA). Acceptable values for this field are listed in the D_CBRS_Type table. This field is applicable if CBRS_TF is true. Otherwise this field is null COASTAL BARRIER RESOURCES SYSTEM = COASTAL BARRIER RESOURCES SYSTEM OTHERWISE PROTECTED AREA = OTHERWISE PROTECTED AREA
CBRS_DATE	CBRS Date. Legislative or administrative date on which prohibitions for the CBRS area apply. This must be indicated on the Flood Insurance Rate Map with a note or with a fill pattern indicated on the legend. This field is applicable if CBRS_TF is true. Otherwise this field is null. N/A = N/A
WTR_NM	Primary Flooding Source NP = Not Populated Null = No Data Available
SOURCE_CIT	Source Citation. Abbreviation used in the metadata file when describing the source information for the S_Fld_Haz_Ar table. Normally, the flood hazard area polygon will be divided to distinguish areas modified by the most recent revision from areas based on the effective FIRM prior to the most recent revision. Revisions and sources prior to the most recent revision will not be tracked for individual polygons in the flood hazard areas table in the standard database. N/A = N/A
PRODUCT_ID	FEMA Flood Map Service Center Product ID. https://msc.fema.gov/portal/advanceSearch NFHL_12_20150223 = NFHL_12_20150223
DESCRIPT	Based on the field CBRS_TYP. COASTAL BARRIER RESOURCES SYSTEM = COASTAL BARRIER RESOURCES SYSTEM OTHERWISE PROTECTED AREA = OTHERWISE PROTECTED AREA NO DESCRIPT AVAILABLE = NO DESCRIPT AVAILABLE
FGDLAQDATE	Date FGDL acquired the data from the Source. 20150226 = 20150226
AUTOID	Unique ID added by GeoPlan
SHAPE.AREA	Area in meters
SHAPE.LEN	Perimeter in meters

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.

USER NOTES:

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.

Data contained in the NFHL reflects the content of the source materials. Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. With new mapping, FEMA plans to maintain full detail in the spatial data it produces. However, older information is often transferred from existing maps where some generalization has taken place. 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 analyses of records of river flow, storm tides, and rainfall; information obtained through consultation with the communities; floodplain topographic surveys; and hydrological and hydraulic analysis. Generally, regulatory water surface elevations and/or regulatory floodways are published only for developed or developing areas of communities. For areas where little or no development is expected to occur, FEMA may generate flood risk data without published water surface elevations. Typically, only drainage areas that are greater than one square mile and with an average of one foot of flood depth or greater are studied. Note: The NFHL reflects the most current information available when the distribution data set was created. Currently, not all areas of a State or Territory have effective FIRM Database data. As a result, users may need to refer to the effective FIRM for effective flood hazard information.

The NFHL incorporates all FIRM Databases published by FEMA and any LOMRs that have been issued against those databases since their publication date. The NFHL consists of vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and FIRM Database 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 Standards for Flood Risk Analysis and Mapping. 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 the individual FIRM Database components of the NFHL 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 reports that accompany the individual FIRM Database components of the NFHL. Users should be aware that BFEs shown in the S_BFE table may 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.

-------------------------------------------------------------------------------- **The Following Information Contains The GeoPlan Center Process Steps: Indented Format** The GeoPlan Center downloaded the Statewide National Flood Hazard Layer from the following FEMA website on February 26th, 2015. FEMA Flood Map Service Center https://msc.fema.gov/portal Search All Products https://msc.fema.gov/portal/advanceSearch Choose one of the three search options below and optionally enter a posting date range. https://msc.fema.gov/portal/advanceSearch State -FLORIDA County - ALACHUA Community - ALACHUA Search Effective Products NFHL Data-State(1) Product ID Latest Study Effective Date Latest LOMR Effective Date Size Download NFHL_12_20150223 09/26/2014 02/23/2015 1400MB NFHL_12_20150223.zip NFHL_12_20150223.gdb Feature Layer: S_CBRS The S_CBRS was originally in the following projection: GCS_North_American_1983 WKID: 4269 Authority: EPSG Angular Unit: Degree (0.0174532925199433) Prime Meridian: Greenwich (0.0) Datum: D_North_American_1983 Spheroid: GRS_1980 Semimajor Axis: 6378137.0 Semiminor Axis: 6356752.314140356 Inverse Flattening: 298.257222101 The dataset was projected to the FGDL Albers HARN projection using the following Transformation: NAD_1983_To_HARN_Florida The dataset was renamed to dfirm_cbrs_feb15. Next the following fields were added and populated: PRODUCT_ID = "NFHL_12_20150223" DESCRIPT = CBRS_TYP FGDLAQDATE = "2/26/2015" AUTOID = OBJECTID It was noted that sliver polygons existed (primarily in Charlotte County). However, no methodology was performed by GeoPlan to correct for these issues. For more information on FEMA's Final Data Structure concerning sliver polygons please see below. The FEMA report frm_gsal.pdf states the following regarding sliver polygons. L.3.5.2 Topology Vector data files must meet the following data structure requirements: * Area spatial features for a given theme must cover the entire study area without overlaps, underlaps or sliver polygons between adjacent polygons. -------------------------------------------------------------------------------- ** The following FEMA DFIRM information is from the frm_gsalb.pdf ** Table: S_CBRS This table only applies to coastal areas that have specially protected areas designated by Congress on John H. Chafee Coastal Barrier Resources System (CBRS) maps. Authoritative CBRS boundary locations are shown on these maps administered by the U.S. Fish and Wildlife Service. Normally these areas are already shown on existing Federal Emergency Management Agency (FEMA) maps for the area. CBRS areas have restrictions on Federal funding (including flood insurance coverage) after specified dates for new or substantially improved structures. See Section 2.2 and Appendix K of these Guidelines for more detailed information about CBRS areas. The S_CBRS table contains information about the CBRS areas within the study area, if applicable. A spatial file with locational information also corresponds with this data table. The spatial elements representing CBRS features are closed polygons. Each contiguous CBRS area of the same CBRS_TYP and same CBRS_DATE must be a single polygon. This is a Standard DFIRM Database table. What are Coastal Barriers? Coastal barriers are unique land forms that provide protection for diverse aquatic habitats and serve as the mainland's first line of defense against the impacts of severe coastal storms and erosion. Located at the interface of land and sea, the dominant physical factors responsible for shaping coastal land forms are tidal range, wave energy, and sediment supply from rivers and older, pre-existing coastal sand bodies. Relative changes in local sea level also profoundly affect coastal barrier diversity. Coastal barriers: * Consist primarily of unconsolidated sediments (sand, gravel, etc.); * are subject to wind, wave, and tidal energies; * are subject to the impacts of coastal storms and sea-level rise; * buffer the mainland from the impact of storms; * include associated landward aquatic habitats that are protected from direct wave attack by the fastland (non-wetland) portion of the coastal barrier; and * protect and maintain productive estuarine systems which support the Nation's fishing and shellfishing industries; Types of Coastal Barriers Coastal barriers may be described by their relationships to the mainland as bay barriers, tombolos, barrier spits, and barrier islands. Additional areas which function as coastal barriers include dune and beach barriers, and fringing mangroves. The term "mainland" includes the continental land mass as well as large islands such as Long Island, New York and the Hawaiian Islands. Definitions of the various kinds of coastal barriers follow. * Bay barriers - coastal barriers that connect two headlands, and enclose a pond, marsh, or other aquatic habitat. The terms bay mount bar and bay bar are synonymous. * Tombolos - sand or gravel beaches which connect one or more offshore islands to each other or to the mainland. The terms connecting bar, tie bar, and tying bar are synonymous. * Barrier spits - coastal barriers that extend into open water and are attached to the mainland at only one end. They can develop into a bay barrier if they grow completely across a bay or other aquatic habitat. On the other hand, bay barriers can become spits if an inlet is created. * Barrier islands - coastal barriers completely detached from the mainland. Barrier spits may become barrier islands if their connection to the mainland is severed by creation of a permanent inlet. The barrier island represents a broad barrier beach, commonly sufficiently above high tide to have dunes, vegetated zones, and wetland areas. * Dune or beach barriers - broad sandy barrier beaches, with hills or ridges of sand formed by winds, which protect landward aquatic habitats. * Fringing mangroves - bands of mangrove along subtropical or tropical mainland shores in areas of low wave energy. Many of these areas are located behind coral reefs, which together with the mangroves themselves, provide significant protection for the mainland from storm impact. Location of Coastal Barriers Coastal barriers occur on all the coastlines of the United States. One of the longest and best defined chains of coastal barriers in the world occurs along the United States shoreline bordering the Atlantic Ocean and the Gulf of Mexico. This chain contains over 400 barriers and totals about 2,700 miles of shoreline. The coastal barriers from Maine to Texas show a high degree of regional diversity, controlled by differences in climate and in the physical processes shaping barrier shorelines. Long, continuous barriers with small ebb-tidal deltas are produced by longshore currents along wave-dominated coasts. These barriers are typified by the coastal barrier islands along the south Texas coast which are long, generally narrow, and cut by widely separated tidal inlets with large sand accumulations in the back-barrier bays, and small or nonexistent seaward shoals. Similar barrier islands are also found in parts of Louisiana, the Florida panhandle, southeast Florida, North Carolina's Outer Banks, the south shore of Long Island, and the Cape Cod segment of the Massachusetts coast. Tide-dominated coastlines support large ebb-tidal deltas. The Georgia coastal barrier islands typify a tide-dominated coastline: they are relatively short and stubby and are separated by stable tidal inlets with an average spacing of 9 miles. Tide-dominated barriers also occur in northeast Florida, most of South Carolina's coast, along the Delmarva Peninsula, Massachusetts, and in some areas of Louisiana and Texas. Secondary Barriers If a suitable sediment source and sufficient wind, waves, and tidal energy exist, a secondary barrier may occasionally form behind the seaward coastal barrier. Secondary barriers are located in large, well-defined bays or in lagoons on the mainland side of coastal barrier systems. These barriers are maintained primarily by internally generated wind waves rather than open ocean waves. Consequently, secondary barriers are generally smaller and more ephemeral than barriers along the open coast. Nonetheless, these barriers are formed of unconsolidated sediments just like most oceanic barriers and, more importantly, they also protect vital fish and wildlife habitat and provide substantial protection for the mainland during major storms. Value of Coastal Barriers Coastal barriers provide invaluable services that are the foundations of a strong economy and healthy environment. They offer habitats that support a variety of fish and wildlife, protect mainland communities from severe storms, serve as popular vacation destinations, and support local economies. Coastal Barriers and Natural Resources Coastal barriers protect the aquatic habitats between the barrier and the mainland which contain resources of extraordinary scenic, scientific, recreational, natural, historic, and economic value. Together with their adjacent wetland, marsh, estuarine, inlet, and nearshore water habitats, coastal barriers support a tremendous variety of organisms. Millions of fish, shellfish, birds, mammals, and other wildlife depend on barriers and their associated wetlands for vital feeding, spawning, nesting, nursery, and resting habitat. These habitats are also critically important for many species harvested in the Nation's commercial fish and shellfish industries. The barrier and its associated habitats are one ecological system, and the health and productivity of the entire system depend on the rational use of all the component parts. Coastal Barriers and Severe Storms Under normal weather conditions, only aquatic habitats immediately adjacent to coastal barriers are exposed to direct wave attack. However, major coastal storms routinely affect the entire landward aquatic habitat. This habitat survives major storms because coastal barriers receive the brunt of the ocean's energies. Storm waves break on the barrier beach, leaving a diminished wave to travel into the wetland. At the same time, the wetland stores storm flood waters, easing the flood pressure on the mainland. Without extensive sand beaches protecting many bluffs and terraces, damages from violent storms would be much greater. Sand acts as a brake or drag on waves. Where there are barrier beaches fronting embayments, the sand absorbs the energy much as it does at the base of cliffs. The principal danger to beaches and barriers is not intense storms but a steady reduction in the sand supply caused by dams on tributary streams and the diversion or interruption of littoral transport along the seaward edge of beaches and barriers by bulkheads, groins, and jetties. In some situations, mining of beach sand has contributed to the problem. Spits and low-lying barrier beaches survive severe storms with relatively slight effects as long as there is a supply of sand available to restore the beach. A severe storm is a short-term phenomenon, repeating the annual cycle of changing width and slope of the beach within a few hours. Sometimes a spit is eroded back or shortened and the dunes reduced or moved, but the sand begins to build up again towards its equilibrium condition almost as soon as the storm ends. The entrance to a bay and/or river mouth may be relocated or shoaled, but this sometimes also happens without storms. Shoaling of harbor entrances may be dangerous to navigation and require dredging to restore an entrance channel. Development of Coastal Barriers Besides bearing the brunt of impacts from storms and erosion, most coastal barriers are made of unconsolidated sediments (sand, gravel, etc.). This geological composition alone makes them highly unstable areas on which to build. Despite their instability, many coastal barriers have been developed. In the past, this development was encouraged by the availability of Federal flood insurance and other types of Federal financial assistance. Through its unique free-market approach to conservation, the Coastal Barrier Resources Act has been instrumental in ensuring that the Federal government does not encourage the development of these coastal barrier habitats. --------------------------------------------------------------------------------

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 FIRM Database presents the flood risk information depicted on the FIRM in a digital format suitable for use in electronic mapping applications. The FIRM Database serves to archive the information collected during the Flood Risk Project.

The NFHL consists of vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and FIRM Database 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 Standards for Flood Risk Analysis and Mapping. 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 the individual FIRM Database components of the NFHL was also performed.

The NFHL consists of vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and FIRM Database 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 Standards for Flood Risk Analysis and Mapping. The reliability of the floodplain boundary delineation is quantified by comparing the computed flood elevation to the ground elevation at the mapped floodplain boundary. The tolerance for how precisely the flood elevation and the ground elevation must match varies based on the flood risk class, which is a function of population, population density, and/or anticipated growth in floodplain areas. A horizontal accuracy of +/- 38 feet is used to determine the compliance with the vertical tolerances defined for each risk class. The range of differences between the ground elevation (defined from the topographic data used for the Flood Risk Project) and the computed flood elevation is between +/- 1.0 foot at the 95% confidence interval for areas with high population within the floodplain and/or high anticipated growth and Special Flood Hazard Areas (SFHAs) with high flood risk to +/- one-half the contour interval at the 85% confidence interval for areas with low population and densities within the floodplain and small or no anticipated growth and SFHAs with low flood risk. Independent quality control testing of the individual FIRM Database components of the NFHL was also performed.

FEMA Disclaimer: No warranty expressed or implied is made by FEMA regarding the utility of the data on any other system nor shall the act of distribution constitute any such warranty. FEMA will warrant the delivery of this product in a computer-readable format, and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer input peripherals, or when the physical medium is delivered in damaged condition. Requests for adjustment of credit must be made within 90 days from the date of this shipment from the ordering site. The hardcopy FIRM and FIRM Database and the accompanying FIS 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 match the hardcopy map exactly. Acknowledgement of FEMA would be appreciated in products derived from these data.

The Florida Geographic Data Library is a collection of Geospatial Data compiled by the University of Florida GeoPlan Center with support from the Florida Department of Transportation. GIS data available in FGDL is collected from various state, federal, and other agencies (data sources) who are data stewards, producers, or publishers. The data available in FGDL may not be the most current version of the data offered by the data source. University of Florida GeoPlan Center makes no guarantees about the currentness of the data and suggests that data users check with the data source to see if more recent versions of the data exist. Furthermore, the GIS data available in the FGDL are provided 'as is'. The University of Florida GeoPlan Center makes no warranties, guaranties or representations as to the truth, accuracy or completeness of the data provided by the data sources. The University of Florida GeoPlan Center makes no representations or warranties about the quality or suitability of the materials, either expressly or implied, including but not limited to any implied warranties of merchantability, fitness for a particular purpose, or non-infringement. The University of Florida GeoPlan Center shall not be liable for any damages suffered as a result of using, modifying, contributing or distributing the materials. A note about data scale: Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modeling purposes. Please be sure you are using the best available data. 1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries. 1:100000 scale datasets are recommended for projects that are at the multi-county or regional level. 1:125000 scale datasets are recommended for projects that are at the regional or state level or larger. Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analysis. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our webpage at: http://geoplan.ufl.edu/education.html

REFERENCES:

FEMA Flood Map Service Center https://msc.fema.gov/portal/advanceSearch NFHL Resources http://www.fema.gov/national-flood-insurance-program-flood-hazard-mapping/national-flood-hazard-layer-nfhl National Flood Hazard Layer (NFHL): New Products and Services for FEMA's Flood Hazard Map Data http://www.fema.gov/media-library/assets/documents/13424?id=3286 NFHL GIS Data: Perform Spatial Analyses and Make Custom Maps and Reports http://www.fema.gov/media-library/assets/documents/13476?id=3291 Guidelines and Standards for Flood Risk Analysis and Mapping http://www.fema.gov/guidelines-and-standards-flood-risk-analysis-and-mapping Technical References http://www.fema.gov/media-library/assets/documents/34519 Guidance Documents http://www.fema.gov/media-library/assets/documents/34953 Map Modernization http://www.fema.gov/national-flood-insurance-program-flood-hazard-mapping/map-modernization Guidance for Flood Risk Analysis and Mapping: Coastal Barrier Resources System Mapping on Flood Insurance Rate Maps http://www.fema.gov/media-library-data/1407364114961-5744ea0b5beaf0293e1cc846602b1bae/CBRS_Guidance_May_2014.pdf

DATA LINEAGE SUMMARY:

The NFHL dataset is a compilation of effective FIRM Databases (a collection of the digital data that are used in GIS systems for creating new Flood Insurance Rate Maps) and Letters of Map Change (Letters of Map Amendment and Letters of Map Revision only) that create a seamless GIS data layer for a State or Territory. It is updated on a monthly basis. The FIRM Databases are compiled in conjunction with the hardcopy FIRMs and the final FIS reports. The specifics of the hydrologic and hydraulic analyses performed are detailed in the FIS reports available for each jurisdiction. 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 FIRM publication and checked for accuracy and compliance with FEMA standards. As new FIRM Databases are received the individual FIRM layers are sewn into the nationwide layers of the NFHL. LOMRs for the FIRM Databases in the NFHL are cut directly into the NFHL data layers as they are being produced and finalized. Process Date: 20150130 The GeoPlan Center downloaded the Statewide National Flood Hazard Layer from the following FEMA website on February 26th, 2015. FEMA Flood Map Service Center https://msc.fema.gov/portal Search All Products https://msc.fema.gov/portal/advanceSearch Choose one of the three search options below and optionally enter a posting date range. https://msc.fema.gov/portal/advanceSearch State -FLORIDA County - ALACHUA Community - ALACHUA Search Effective Products NFHL Data-State(1) Product ID Latest Study Effective Date Latest LOMR Effective Date Size Download NFHL_12_20150223 09/26/2014 02/23/2015 1400MB NFHL_12_20150223.zip NFHL_12_20150223.gdb Feature Layer: S_CBRS The S_CBRS was originally in the following projection: GCS_North_American_1983 WKID: 4269 Authority: EPSG Angular Unit: Degree (0.0174532925199433) Prime Meridian: Greenwich (0.0) Datum: D_North_American_1983 Spheroid: GRS_1980 Semimajor Axis: 6378137.0 Semiminor Axis: 6356752.314140356 Inverse Flattening: 298.257222101 The dataset was projected to the FGDL Albers HARN projection using the following Transformation: NAD_1983_To_HARN_Florida The dataset was renamed to dfirm_cbrs_feb15. Next the following fields were added and populated: PRODUCT_ID = "NFHL_12_20150223" DESCRIPT = CBRS_TYP FGDLAQDATE = "2/26/2015" AUTOID = OBJECTID It was noted that sliver polygons existed (primarily in Charlotte County). However, no methodology was performed by GeoPlan to correct for these issues. For more information on FEMA's Final Data Structure concerning sliver polygons please see below. The FEMA report frm_gsal.pdf states the following regarding sliver polygons. L.3.5.2 Topology Vector data files must meet the following data structure requirements: * Area spatial features for a given theme must cover the entire study area without overlaps, underlaps or sliver polygons between adjacent polygons. Process Date: 20150226

MAP PROJECTION PARAMETERS:

Projection                          ALBERS
Datum                               HPGN
Units                               METERS
Spheroid                            GRS1980
1st Standard Parallel               24  0  0.000
2nd Standard Parallel               31 30  0.000
Central Meridian                   -84 00  0.000
Latitude of Projection's Origin     24  0  0.000
False Easting (meters)              400000.00000
False Northing (meters)             0.00000

DATA SOURCE CONTACT (S):

Name:
Abbr. Name:
Address:


Phone:

Web site:
E-mail:
Contact Person:
         Phone:
        E-mail:

Federal Emergency Management Agency
FEMA
500 C Street SW
Washington, DC
20472
1-800-358-9616


http://msc.fema.gov/portal/advanceSearch
www.msc.fema.gov
Flood Map Service Center

Name:                   FLORIDA GEOGRAPHIC DATA LIBRARY
Abbr. Name:             FGDL
Address:                Florida Geographic Data Library
                        431 Architecture Building
                        PO Box 115706
                        Gainesville, FL  32611-5706
Web site:               http://www.fgdl.org

Contact FGDL: 

      Technical Support:	        http://www.fgdl.org/fgdlfeed.html
      FGDL Frequently Asked Questions:  http://www.fgdl.org/fgdlfaq.html
      FGDL Mailing Lists:		http://www.fgdl.org/fgdl-l.html
      For FGDL Software:                http://www.fgdl.org/software.html