This GIS data set represents the aids to navigation (ATONs) for the Seventh and Eighth Coast Guard Districts. This is a subset of all aids, to obtain a complete dataset visit (http://geodata.myfwc.com/).The term "aids to navigation" refers to devices outside of a vessel that are used to assist mariners in determining their position, safe course or warn them of obstructions. Aids to navigation include light buoys and beacons. This data set includes federal aids, which are installed and maintained by the Coast Guard, as well as some privately maintained aids. This data set does not include unofficial (illegal) aids, such as PVC pipes, placed without permission. This data set is not certified for navigation and is not intended for navigation purposes. Each USCG district headquarters is responsible for updating its database on an as-needed basis. When existing aids are destroyed or relocated and new aids are installed, the database is updated. Each aid is assigned an official light listing number. The Light List is a document listing the status of the ATONs; it is regularly published and distributed. Interim changes to the Light List are published in local notices to mariners. In addition, the USCG broadcasts notices to mariners on the marine band radio as soon as changes in the status of individual aids are reported. Navigators should use the official notices to mariners to maintain current charts. Annual (or more frequent) updates of the Aids to Navigation database can be obtained from each USCG district headquarters.
This data set represents a GIS layer of ATONs as of November 16, 2016; with spatial extent of the Seventh Coast Guard District plus the Gulf of Mexico area from the Eighth Coast Guard District. These data are not to be used for navigation or positional referencing. Users are instructed to consult the appropriate navigational chart, notice to mariners, and light list for any purpose other than natural resource conservation planning. Due to the possibility of unknown errors in reporting, projection or datums the accuracy of these data are not certified. The existence, position and description of features might have changed since data were originally compiled.
Prior to July 1, 2004, the Fish and Wildlife Research Institute (FWRI) was known as the Florida Marine Research Institute (FMRI). The institute name has not been changed in historical data sets or references to work completed by the Florida Marine Research Institute. The institute name has been changed in references to ongoing research, new research, and contact information.
publication date
These data are not to be used for navigation or positional referencing. Users are instructed to consult the appropriate navigational chart, notice to mariners, and light list for any purpose other than natural resource conservation planning. Due to the possibility of unknown errors in reporting, projection or datums the accuracy of these data are not certified. The existence, position and description of features might have changed since data were originally compiled. Users are encouraged to read and fully comprehend the metadata record prior to using these data. Please acknowledge the Florida Fish and Wildlife Conservation Commission (FWC) as the data source for any products developed from these data. Users should be aware that comparison with other data sets for the same area may be inaccurate due to inconsistencies resulting from changes in mapping conventions, data collection techniques, and computer processes over time. FWC shall not be liable for improper or incorrect use of these data.
100 Eighth Avenue Southeast
The Seventh and Eighth U.S. Coast Guard Districts provided the source data used to create this spatial data set.
GeoPlan relied on the integrity of the attribute information within the original data.
Records without coordinates were removed.
Aids without coordinates have been removed. Otherwise this data set is complete as the source data provided by the Coast Guard.
FWRI has not attempted to verify horizontal positional accuracy, but typographical errors may exist in the source data.
This data is provided 'as is' and its vertical positional accuracy has not been verified by GeoPlan
Spatial and Attribute Information
Spatial and Attribute Information
The source data were downloaded as XML Spreadsheets from the Coast Guard Light List Weekly Updates site. FWRI reformatted the latitude and longitude to decimal degrees in order to convert to shapefile using the Add X,Y tool in ArcMap. FWRI also added additional attributes based on the information provided by the coast guard in order to create symbology fields. See the Entity and Attribute Section for more information.
GeoPlan received this data in shapefile format via FTP from FWRI on June 21, 2017. The data was received as a shapefile in projection: NAD_1983_2011_Florida_GDL_Albers. The dataset was then projected from NAD_1983_2011_Florida_GDL_Albers to FGDL Albers HARN using NAD_1983_To_HARN_Florida transformation. This is the first time we've received this dataset in NAD_1983_2011_Florida_GDL_Albers. Previously it came in a custom PCS Albers projection. Projecting using the following transformation: nad_1983_harn_to_nad_1983_2011 has introduced a shift between 0.5 and 1 meter. The shapefile received had 22221 records some of which fell outside the FGDL extent. The records that fell within the FGDL extent were selected out and exported to a new shapefile. Therefore this data set does not represent all aids to navigation for the Seventh and Eighth Coast Guard Districts. The final FGDL data set has 18674 records. For a complete Seventh and Eighth USCG District data set visit the FWRI site at: http://geodata.myfwc.com/ - Reprojected data to FGDL Albers HARN - Changed name of original DESCRIPT field to DESCRIPT1 - Added DESCRIPT field based on AID_NAME - Added a FGDLAQDATE field based on date received from source - Renamed shapefile from atons_uscg_point to cgaton_nov16
Dataset copied.
Internal feature number.
ESRI
Feature geometry.
ESRI
Date generated
USCG
Coast Guard District
USCG
Seventh Coast Guard District
Eighth Coast Guard District
Light List Number
USCG
Aid Name
USCG
Aid Label - number and letter (from Aid_Name)
FWRI
Aid Number (from Aid Name)
FWRI
Aid Type
USCG
Federal
Private
Indicates if numbered aids are odd or even numbers
FWRI
Odd
Even
Assigned Latitude
USCG
Latitude in decimal degrees
FWRI
Assigned Longitude
USCG
Longitude in decimal degrees
FWRI
Structure remarks
USCG
Undefined by Source
USCG
Light Characteristics
USCG
Fixed
Flashing
Group Flashing
Isophase
Morse Code
Occulting
Quick (Flashing)
Seconds
Yellow
Red
White
Green
Day or night beacon. Can be Day, Night, or Both
USCG
Remarks
USCG
Aid location comments
USCG
Abbreviated description of aid type (from Aid_Name)
USCG
Daybeacon
Lighted buoy
Light
Racon
Range front light
Range rear light
Unlighted buoy
Full description of aid type (from Aid_Name)
FWRI
Concatenation of DESCRIPT and ODD_EVEN and AIS. Used to define categories for symbology
FWRI
Undefined by Source
FGDL added field based on AID_NAME
GeoPlan
FGDL added field based on date downloaded from source
GeoPlan
Unique ID added by GeoPlan
GeoPlan
431 Architecture PO Box 115706
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
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