Geodataset Name:       CBRS_MAR16
Geodataset Type:       SHAPEFILE
Geodataset Feature:    Polygon
Feature Count:         135

DATA SOURCE(S):                    U.S. Fish and Wildlife Service
SCALE OF ORIGINAL SOURCE MAPS:     24000
GEODATASET EXTENT:                 State of Florida

PUBLICATION DATE:                  20160314
TIME PERIOD OF CONTENT:            Begin Date: 19901024    End Date: 20160314
DOWNLOAD LINK:                     http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES:

Datafile Name: CBRS_MAR16.DBF

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item	Item Description
OBJECTID	Internal feature number.
Shape	Feature geometry.
Unit	Unique identifier for each individual CBRS UNIT.
Name	The NAME of the UNIT.
Unit_Type	CBRS units are one of two types: System Units and Otherwise Protected Areas . Otherwise Protected Area = The only Federal spending prohibition within OPAs is the prohibition on Federal flood insurance. System Unit = Most new Federal expenditures and financial assistance, including Federal flood insurance, are prohibited within System units.
Tier	The polygons in this data set have two TIERs of horizontal accuracy depending on the methods used for digitization of the boundary lines, and the age and quality of the official CBRS map. TIER 1 polygons are of lower quality and accuracy than TIER 2 polygons. See the Horizontal Accuracy Statement for more information.
Fast_Acres	The approximate amount of fastlands (also known as uplands), in acres, that is landward of the shoreline of a UNIT. Land of this type is considered to generally consist of land above mean high tide. The value is derived by calculating the portion of the UNIT, inland of the shoreline, that is not covered by the National Wetlands Inventory (NWI) polygons.
Wet_Acres	The approximate amount of wetlands and open water landward of the shoreline of a UNIT, in acres. This value is found derived by calculating the portion of the UNIT, landward of the shoreline, that contains NWI polygons. Note: the nearshore waters of a UNIT are not included in the wetlands acreage calculation.
Shore_Mile	The approximate length of shoreline within a UNIT in miles. The shoreline generally follows the wet/dry sand line as interpreted from the base map image. Additionally, the shoreline crosses any inlets and/or other dividing water bodies within each UNIT. In conjunction with the boundaries of the UNIT, the shoreline is also used to define the total area of a UNIT that is subject to an acreage calculation.
DESCRIPT	GeoPlan added field based on UNIT_TYPE
FGDLAQDATE	Date GeoPlan acquired the data from Source.
AUTOID	Unique ID added by GeoPlan
SHAPE.AREA	Area in meters
SHAPE.LEN	Perimeter in meters

CBRS UNITs: The Coastal Barrier Resources Act (CBRA), as amended, established the John H. Chafee Coastal Barrier Resources System (CBRS), a defined set of geographic UNITs along the Atlantic, Gulf of Mexico, Great Lakes, U.S. Virgin Islands, and Puerto Rico coasts. Most new Federal expenditures and financial assistance are prohibited within the CBRS, unless those activities qualify for an exception under Section 6 of CBRA (16 U.S.C. 3505). The U.S. Fish and Wildlife Service (Service), through the Secretary of the Interior, is responsible for administering CBRA which includes consulting with Federal agencies that propose spending funds within the CBRS. There are two types of UNITs within the CBRS; "System UNITs" and "Otherwise Protected Areas" (OPAs). The boundaries of System UNITs are generally intended to follow geomorphic, development, or cultural features (e.g., wetland/upland interface, roads, etc.) and are depicted on the CBRS maps with bold solid lines. Most new Federal expenditures and financial assistance, including Federal flood insurance, are prohibited within System UNITs. The CBRS currently includes 585 System UNITs, which add up to approximately 1.3 million acres of land and associated aquatic habitat. The boundaries of OPAs are generally intended to coincide with the boundaries of conservation or recreation areas such as state parks and national wildlife refuges. OPAs are depicted on the CBRS maps with dotted/dashed lines and UNIT NAMEs followed by a "P" (e.g., FL-20P). The only Federal spending prohibition within OPAs is the prohibition on Federal flood insurance. The CBRS currently includes 272 OPAs which add up to approximately 1.9 million acres of land and associated aquatic habitat.

USER NOTES:

USFWS: Topological checks were conducted to ensure that no polygons overlap and that adjacent boundaries are coincident where appropriate.

USFWS: In most cases the seaward boundary of a CBRS unit is defined by the 30 foot bathymetric contour rather than a hard boundary depicted on the official source map. In these cases, the digital boundaries have been terminated by connecting the ends of the lateral boundaries on the seaward side. Therefore, the actual CBRS seaward boundary may extend farther offshore than is shown by the polygons. In large coastal embayments and the Great Lakes, the boundary is defined by the 20-ft bathymetric contour or a line approximately one mile seaward of the shoreline, whichever is nearer the coastal barrier. USFWS: Independent quality control checks were conducted on all attributes.

GeoPlan relied on the integrity of the attribute information within the original data.

This data set was created to provide local users with a general depiction of the aerial extent of the boundaries of the John H. Chafee Coastal Barrier Resources System.

USFWS: The CBRS polygons in this data set have two tiers of horizontal accuracy depending on the methods used for digitization of the boundaries, and the age and quality of the official CBRS map. Tier 1 polygons are of lower quality and accuracy than Tier 2 polygons. As the Service modernizes the CBRS maps, Tier 1 polygons will be upgraded to Tier 2. Tier 1: Centerline Boundaries: Polygons attributed with a Tier 1 accuracy level were created by digitizing the center of the CBRS boundaries shown on the official paper maps (mostly published in 1990). The potential sources of error are described below. Base map accuracy: Most of the official CBRS maps use United States Geological Survey (USGS) Quadrangles (quads) as a base map. USGS quads are tested to meet the National Map Accuracy Standards, and have a declared horizontal accuracy of at least 90% at the well-defined points tested, with an error of approximately plus or minus 40 feet. However, the majority of the boundaries used to create the Tier 1 polygons follow several categories of features shown on the quads (such as vegetative breaks, shorelines, and mangrove stands) that cannot be considered to be well-defined points, and therefore may have a greater degree of horizontal error than is stated above. As such, the CBRS boundaries on the official maps will have inherited the level of error in horizontal accuracy of the quads. Georeferencing accuracy: Additional error may have been introduced during the georeferencing process. Generally, the paper CBRS maps were scanned and then georeferenced to a USGS or third party Digital Raster Graphic (DRG) of the quad covering the same area as the CBRS map. Therefore, any horizontal error in the DRG can be assumed to have been inherited during the georeferencing process. The Service makes no claim to the accuracy of third party data used in this process. Furthermore, new error could have been introduced during the georeferencing process as a result of inexact or insufficient control point selection. However, all georeferenced maps were visually inspected for adequate fit to the DRG and aerial imagery along the boundary. Digitization of the boundary: Every attempt was made to digitize the exact center of the boundaries on the official CBRS maps. However, because the boundary lines on these maps vary in width between 80 and 100 feet on the ground and the boundaries appear pixilated at the scale used in the digitization process, it was difficult to consistently define the centerline of the CBRS boundaries. Therefore, additional error was introduced as a result of this process. Gaps in boundaries: The official CBRS maps occasionally have gaps in the boundary where no line was drawn to avoid obscuring a feature label on the quad. In these places, cartographic judgment was used and the boundary was digitized generally to follow the feature that the boundary was following on the DRG, or drawn as a straight line if the boundary intent was not clear. Edge matching: Many CBRS units extend across multiple maps. In some cases there are significant disjunctions between the boundaries at the edges of adjacent maps because of the manual process that was used to draw the CBRS boundaries. Cartographic judgment was used to determine the best way to eliminate these disjunctions on a case by case basis. Additionally, many of the official CBRS maps were created by physically cutting paper quads and taping them together (splicing) to achieve the desired map extent prior to drawing the boundaries. In almost every case there was some error introduced by imperfect edge matching. Poor splices on the official CBRS maps were accounted for by georeferencing the maps multiple times. For example, in cases where the official CBRS map was composed of two different quads taped together vertically down the middle, the western half of the map would be georeferenced and digitized separately from the eastern half. This typically resulted in a disjunction where the CBRS boundary on either side of the splice comes together. In these cases, cartographic judgment was used to determine the best way to eliminate disjunctions. Tier 2: Digital Conversion and Comprehensively Modernized Boundaries: The Service has two ongoing map modernization projects: (1) digital conversion, which produces modernized maps that have very limited changes and can be adopted administratively (changes limited to those authorized under 16 U.S.C. 3503(c)-(e)); and (2) comprehensive map modernization, which produces comprehensively revised maps that contain more significant changes and must be enacted by Congress to become effective (mandated by Sections 3 and 4 of P.L. 109-226). For more information about CBRA mapping, visit http://www.fws.gov/cbra . Polygons attributed with a Tier 2 accuracy level were created with modern Geographic Information Systems (GIS) technology using orthorectified aerial imagery (orthoimagery) as the base map. Because CBRS boundaries are often tied to features visible on the base map, the CBRS boundaries with Tier 2 accuracy are most reliable when paired with the base image that they were digitized on and are much higher quality than Tier 1 boundaries. To obtain the source of the base map image for a particular map, please email CBRA@fws.gov. Since 1999, Tier 2 boundaries have been used to create paper maps that were either enacted into law by Congress or administratively adopted by the Secretary. A potential source of error is described below. Spatial accuracy of orthoimagery: The orthoimagery is obtained from multiple sources and is selected based on quality, cost, and coverage availability. The imagery selected for use in this process generally met the following guidelines: it must be no more than five years old at the time of boundary digitization, it must have a resolution of 1 meter pixels or less, the imagery must be orthorectified, and the imagery must be available free of charge. Commonly used orthoimagery for Tier 2 boundaries is from the National Agriculture Imagery Program (NAIP). NAIP imagery has an accuracy of +/- 20 feet. Many CBRS boundaries are drawn to have specific relationships to features shown on the orthoimage that they were digitized on. Therefore, the CBRS boundaries inherit the spatial accuracy of base orthoimagery, and may appear not to fit other images properly.

This data is provided 'as is' and its vertical positional accuracy has not been verified by GeoPlan

USFWS: A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable. USFWS Use Constraints User must read and fully comprehend the metadata prior to data use. User must acknowledge the U.S. Fish and Wildlife Service as the originator when using the data set as a source. User must share data products developed using this source data set with the U.S. Fish and Wildlife Service. Data should not be used beyond the limits of the source scale. The data set is NOT a survey document and should not be utilized as such. The data set is NOT to be used for definitive in/out determinations. USFWS Data Disclaimer Coastal Barrier Resources System (CBRS) polygons in this data set are only representations of the official CBRS boundaries and are not to be considered authoritative. In general, these digital boundaries can be considered accurate to within approximately 150 feet of the actual CBRS boundaries as shown on the official maps. Additionally, because CBRS units extend seaward out to either the 20- or 30-foot bathymetric contour (depending on the location of the unit), the true seaward extent of the units is not shown. The Service is not responsible for any misuse or misinterpretation of this digital data set, including use of the data to determine eligibility for federal financial assistance such as federal flood insurance. For information on obtaining an official determination of whether or not an area or specific property is located within the CBRS, please visit: http://www.fws.gov/cbra/Determinations.html. For information on project consultations, please visit: http://www.fws.gov/CBRA/Consultations/Consultations.html. For information on the horizontal accuracy of this digital data set, please read the metadata.

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:

Coastal Barrier Resources Act http://www.fws.gov/cbra/ Digital CBRS Boundaries http://www.fws.gov/cbra/Maps/Boundaries.html http://www.fws.gov/cbra/Maps/Data_Disclaimer_Shapefiles.html

DATA LINEAGE SUMMARY:

Development of the data set by the agency / individuals identified in the 'Originator' element in the Identification Info section of the record. Congress Makes Updates to Coastal Barrier Resources System Maps in Four States Maps depicting 11 units of the Coastal Barrier Resources System (CBRS) were made effective on December 18, 2014, via Public Law 113-253. The new maps (depicting revisions to ten units and one entirely new unit) are accessible via a U.S. Fish and Wildlife Service (Service) online mapper. The affected units, comprising 19,893 total acres, are located in Rhode Island, North Carolina, South Carolina, and Florida. The new maps correct errors affecting property owners and add eligible undeveloped areas to the CBRS. Florida Maps A new map for CBRS Units FL-70 and FL-70P, located in Lee County, Florida, was made effective on December 18, 2014, via Public Law 113-253. http://www.fws.gov/cbra/Maps/Recently-Enacted-Maps.html Process Date: 20141218 Florida Maps-Collier County Three new maps for CBRS Units FL-63P, P15/P15P, and P16/P16P, located in Collier County, Florida, were made effective on February 29, 2016, via Pub. L. 114-128. Process Date: 20160229 This data set was downloaded by GeoPlan from the following USFWS webpage: http://www.fws.gov/cbra/Maps/Boundaries.html https://www.fws.gov/ecological-services/habitat-conservation/cbra/Maps/Data_Disclaimer_Mapper.html CBRS_Polygons.zip CBRS_Polygons.shp The data was downloaded in shapefile format on June 28th, 2016. When downloaded the data was in Geographic Coordinate System North_American_1983 The dataset was reprojected to the following FGDL Albers projection: Albers Conical Equal Area [Florida Geographic Data Library] -Selected only polygons that intersected the Florida County Boundaries -Changed name from CBRS_Polygons.shp to cbrs_jun16.shp -Added DESCRIPT field based on UNIT_TYPE -Added FGDLAQDATE based on date acquired from source -Upcased all records Process Date: 20160630

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:

U.S. Fish and Wildlife Service
USFWA
5275 Leesburg Pike, MS ES
Falls Church, Virginia
22041
703-358-2171


http://www.fws.gov/cbra/Maps/Data_Disclaimer_Shapefiles.html
cbra@fws.gov
Katie Niemi

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

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