FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: JOHN H. CHAFEE COASTAL BARRIER RESOURCES SYSTEM (CBRS) APPROXIMATE POLYGONS FOR FLORIDA - 2019 

Geodataset Name:       CBRS_MAR19
Geodataset Type:       SHAPEFILE
Geodataset Feature:    Polygon
Feature Count:         141
GENERAL DESCRIPTION:
This Coastal Barrier Resources System (CBRS) data set, produced by the U.S. Fish and Wildlife Service (Service), contains areas designated as undeveloped coastal barriers in accordance with the Coastal Barrier Resources Act (CBRA), as amended (16 U.S.C. 3501 et seq.). These digital polygons are representations of the CBRS boundaries shown on the official CBRS maps referenced in 16 U.S.C. 3503(a). Copies of the official CBRS maps are available for viewing at Service s Headquarters office and are also available to view or download at https://www.fws.gov/cbra/maps/index.html. The boundaries used to create the polygons herein were compiled between 12/6/2013 and 3/12/2019 from the official CBRS maps. The boundaries of the CBRS Units in Connecticut, Massachusetts, Rhode Island, and the Long Island portion of New York, were digitized from the official paper maps according to the guidelines in a notice published in the Federal Register on August 29, 2013 (see the Georeferencing and Boundary Interpretation and Boundary Transcription sections of 78 FR 53467; available at https://www.federalregister.gov/d/2013-21167). In all other cases where the official map was created through digital methods, the digital boundary was used. CBRS boundaries viewed using the CBRS Mapper or shapefiles are subject to misrepresentations beyond the Service s control, including misalignments of the boundaries with third party base layers and misprojections of spatial data. 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 funding or financial assistance. Users should pair these data with the CBRS Buffer Zone shapefile and an orthoimage when inspecting areas that are within or in close proximity to the CBRS. Properties or structures that fall partially or entirely within the buffer area may be within the CBRS, and an official determination from the Service is recommended. For an official determination of whether or not an area or specific property is located within the CBRS, please follow the procedures found at http://www.fws.gov/cbra/determinations.html. The official CBRS map is the controlling document and should be consulted for all official determinations in close proximity (within 20 feet) of a CBRS boundary. For any questions regarding the CBRS, please contact your local Service field office or email CBRA@fws.gov. Contact information for Service field offices can be found at http://www.fws.gov/offices. This is an update to the FGDL dataset CBRS_MAR18. 
DATA SOURCE(S):                    U.S. Fish and Wildlife Service
SCALE OF ORIGINAL SOURCE MAPS:     24,000
GEODATASET EXTENT:                 State of Florida

PUBLICATION DATE:                  20190312
TIME PERIOD OF CONTENT:            Begin Date: 19901024    End Date: 20190312
DOWNLOAD LINK:                     http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES: 

Datafile Name: CBRS_MAR19.DBF
ITEM NAME WIDTH TYPE
OBJECTID
4 OID
Shape
4 Geometry
UNIT
8 String
NAME
254 String
UNIT_TYPE
25 String
FAST_ACRES
8 Double
WET_ACRES
8 Double
SHORE_MILE
8 Double
DESCRIPT
50 String
FGDLAQDATE
36 Date
AUTOID
4 Integer
SHAPE.AREA
0 Double
SHAPE.LEN
0 Double

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.













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 most often derived by calculating the portion of the unit, landward of the shoreline, that contains NWI polygons. The associated aquatic habitat acreage numbers include open water landward of the coastal barrier, but not nearshore waters seaward of the shoreline. For the purpose of the acreage calculation, all units were artificially closed at the seaward shoreline using a dataset digitized for this purpose before acreage calculations were performed.
















SHORE_MILE

The approximate length of shoreline within a unit in miles. The Service digitized a shoreline boundary to artificially close off the units along the seaward shoreline. This shoreline boundary generally follows the wet/dry sand line as interpreted from the base map image. Additionally, the shoreline boundary crosses any inlets and/or other dividing water bodies within each unit. In conjunction with the boundaries of the unit, the shoreline boundary is used to define the total area of a unit that is subject to an acreage calculation.
















DESCRIPT

GeoPlan added field based on NAME and UNIT.
















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 1.35 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 277 OPAs which add up to approximately 
2.11 million acres of land and associated aquatic habitat.






USER NOTES:








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













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.













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













The U.S. Fish and Wildlife Service (Service) has geospatial Coastal Barrier 
Resources System (CBRS) polygon data available in a variety of formats. The 
CBRS polygons 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 20 feet of the actual CBRS boundaries 
as shown on the official maps. For information on the horizontal accuracy of this 
digital data set, please read the metadata and see the "CBRS Buffer Zone" layer.

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 the Determinations web 
page.  For information on project consultations, please visit the Consultations web 
page.

SOURCE: https://www.fws.gov/cbra/maps/Boundaries.html















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.















Because many CBRS boundaries have specific relationships to features visible on 
the base map, the CBRS boundaries are most reliable when paired with the 
orthoimagery that was used in the boundary digitization. Therefore, a potential 
source of error is the spatial accuracy of the base map orthoimagery. The CBRS 
boundaries inherit the spatial accuracy of base orthoimagery, and may appear not to
fit other images properly. The orthoimagery is obtained from multiple sources and is 
selected based on quality, cost, and coverage availability. The imagery selected 
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 CBRS mapping is from the National Agriculture 
Imagery Program (NAIP). NAIP imagery has a stated horizontal accuracy of +/- 20 
feet. For official CBRS maps produced since 2014, the base map image source is 
printed in the title block of the map. To obtain the source of the base map image for 
a particular map or for other information about CBRS mapping, please email 
CBRA@fws.gov.















A formal accuracy assessment of the vertical positional information in the data set is not applicable.















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) digital boundaries in this mapper 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 in this mapper. 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 the 
Determinations web page. For information on project consultations, please visit the 
Consultations web page. For information on the horizontal accuracy of this digital 
data set, please read the metadata.

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.
Last updated: July 10, 2017

SOURCE: https://www.fws.gov/cbra/maps/Data-Disclaimer-Mapper.html














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: 






Digital CBRS Boundaries
https://www.fws.gov/cbra/maps/Boundaries.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.
Process Date: 20190312


The GeoPlan Center downloaded the Coastal Barrier Resources System (CBRS) 
polygon dataset on August 14th, 2019 from the following USFWS webpage.

https://www.fws.gov/cbra/maps/Boundaries.html
https://www.fws.gov/cbra/maps/data/CBRS-Boundaries.zip
CBRS_Polygons.zip
CBRS_Polygons_03122019.shp

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 located near/within the State of Florida using the 
 previous datasets full extent as a guide.
-Changed name from CBRS_Polygons_03122019.shp to cbrs_mar19.shp
-Added DESCRIPT field based on NAME and UNIT.
-Added FGDLAQDATE based on date acquired from source
-Upcased all records
Process Date: 20190814









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
USFWS
U.S. Fish and Wildlife Service Headquarters
Falls Church, Virginia
22041
703-358-2171


https://www.fws.gov/cbra/maps/data/CBRS-Boundaries.zip
CBRA@fws.gov
Katie Niemi









FGDL CONTACT:

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
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