ELECTRIC POWER TRANSMISSION LINES IN FLORIDA

Oak Ridge National Laboratory 20170802 ELECTRIC POWER TRANSMISSION LINES IN FLORIDA - 2017 vector digital data Oak Ridge, TN Oak Ridge National Laboratory State of Florida https://hifld-geoplatform.opendata.arcgis.com/ HIFLD Open and HIFLD Secure This feature class/shapefile represents electric power transmission lines in the State of Florida. Transmission Lines are the system of structures, wires, insulators and associated hardware that carry electric energy from one point to another in an electric power system. Lines are operated at relatively high voltages varying from 69 kV up to 765 kV, and are capable of transmitting large quantities of electricity over long distances. Underground transmission lines are included where sources were available. This feature class/shapefile is for the Homeland Infrastructure Foundation Level Database (HIFLD) (https://gii.dhs.gov/HIFLD) as well as the Energy modelling and simulation community. None. 20140407 20170724 publication date Complete As needed -87.643710 -79.894994 31.046011 24.510057 None homeland security homeland defense voltage energy infrastructure owners power lines emergency response electricity transmission lines transmission kilovolts ISO 19115 Topic Category structure None Florida None 2017 None (Public Domain Information) None (Public Use). Users are advised to read the data set's metadata thoroughly to understand appropriate use and data limitations. Oak Ridge National Laboratory mailing and physical

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Oak Ridge TN 37831 US 865-241-3976 865-241-6261 If you have any additional questions, comments, or concerns please contact the HIFLD Support Team at hifld@hq.dhs.gov or the NGA HSIP Team at hsip_team@nga.mil Oak Ridge National Laboratory (ORNL) Geographic Information Science and Technology (GIST) Group, Los Alamos National Laboratory (LANL), Idaho National Laboratory (INL), National Geospatial-Intelligence Agency (NGA) Homeland Security Infrastructure Program (HSIP) Team Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595 Homeland Infrastructure Foundation-Level Data (HIFLD) Open Data https://hifld-geoplatform.opendata.arcgis.com/ GeoPlan relied on the integrity of the attribute information within the original data. ORNL, LANL, INL, NGA, & HSIP: No formal attribute accuracy test was conducted. Data from the authoritative sources (as identified in other sections of this metadata) is assumed to be correct and accurate. See also "Overview Description" in the "Entities and Attributes" metadata section. Data were extracted from sources (identified in the SOURCE field) and other open source websites to populate the attribute fields. For string and date data types, NOT AVAILABLE values denote missing data that was not present in the source data. For numeric data types, -999999 denote missing data that was not present in the source data. During quality control, attributes were checked to ensure that they fell within the expected ranges or had expected/valid values. Text attribute values were checked for spelling and usage consistency. No topology tests were conducted. All records were verified to occur within the spatial domain of the feature class/shapefile. Data is complete as of the most recent date indicated in the Time Period section and given available sources. None; all efforts are made to place the geographic representation of the facility on- entity using the best available imagery from a wide variety of sources. Users should read and understand the METHOD metadata as well as the Processing Steps. None; dataset contains no vertical data. see SOURCE field 0 onLine ORNL Spatial and Attribute Information Authoritative data sources are identified through open source research. That data is then acquired and transformed into a usable data format. The properly formatted data then goes through preprocessing steps that includes a georeferencing or spatial adjustment operation to give spatial context to the data. In the absence of authoritative sources, feature geometry is created based on interpretation of the best available imagery. The data goes through further refinement using remote sensing techniques. After preprocessing, records go through a review process in an effort to meet the goal of placing each feature on a facility based on-entity location based on interpretation of the best available imagery and open source information. The DATE field indicates the date in which the review step took place. ORNL, LANL, INL, NGA, & HSIP 20170724 The GeoPlan Center downloaded the electric power transmission lines data from the following website on February 28th 2018. Homeland Infrastructure Foundation-Level Data (HIFLD) Open Data https://hifld-geoplatform.opendata.arcgis.com/ *Previously known as https://hifld-dhs-gii.opendata.arcgis.com/ Electric_Power_Transmission_Lines.zip Electric_Power_Transmission_Lines.shp The data was originally in the following projection: Name: GCS_WGS_1984 Details: Angular Unit: Degree (0.017453292519943295) Prime Meridian: Greenwich (0.000000000000000000) Datum: D_WGS_1984 Spheroid: WGS_1984 Semimajor Axis: 6378137.000000000000000000 Semiminor Axis: 6356752.314245179300000000 Inverse Flattening: 298.257223563000030000 A subset of the dataset was created for Florida where the CNTBND county Extents were buffered by 400m. This was used to clip the original and create the new Powerlines dataset. The dataset was reprojected to FGDL Albers Harn HPGN using the following transformation: WGS_1984_(ITRF00)_To_NAD_1983 + NAD_1983_To_HARN_Florida Deleted the OBJECTID and SHAPE_LEN fields. Added and Populated the DESCRIPT field as: "POWER TRANSMISSION LINE (VOLTAGE: " & [VOLT_CLASS] & ")" Added and Populated the FGDLAQDATE field. Uppercased all fields except the SOURCE fields which contained website information. Updated the metadata. GeoPlan 20180228 Vector String 3292 NAD 1983 HARN Florida GDL Albers 24.0 31.5 -84.0 24.0 400000.0 0.0 coordinate pair 0.0001 0.0001 meter D North American 1983 HARN GRS 1980 6378137.0 298.257222101 POWERLINES_JUL17 POWERLINES_JUL17.DBF ORNL, LANL, INL, NGA, & HSIP OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. SHAPE Feature geometry. Esri Coordinates defining the features. ID Unique ID for each feature. ORNL, LANL, INL, NGA, & HSIP OWNER Owner of the transmission line. The responsible organization as identified in the SOURCE field. STATUS Operational status of the feature. The responsible organization as identified in the SOURCE field. IN SERVICE Operational The responsible organization as identified in the SOURCE field. INACTIVE Not operational The responsible organization as identified in the SOURCE field. PROPOSED Proposed The responsible organization as identified in the SOURCE field. UNDER CONST Under construction as of the publication date The responsible organization as identified in the SOURCE field. NOT AVAILABLE A valid value for a feature in all likelihood exists but has not yet been found via open source or other means. These records may be populated with valid information in future update cycles. Originator defined VOLTAGE Carrying capacity of the transmission line in kilovolts. The responsible organization as identified in the SOURCE field. 1 1000 Kilovolt (kV) VOLT_CLASS Voltage of the transmission line grouped in industry standard classifications. ORNL, LANL, INL, NGA, & HSIP 100-161 100 to 161 Kilovolts Originator defined 220-287 220 - 287 Kilovolts Originator defined 345 345 Kilovolts Originator defined 500 500 Kilovolts Originator defined 735 AND ABOVE Greater than or equal to 735 Kilovolts Originator defined DC Direct current transmission line Originator defined NOT AVAILABLE A valid value for a feature in all likelihood exists but has not yet been found via open source or other means. These records may be populated with valid information in future update cycles. Originator defined UNDER 100 Less than 100 Kilovolts Originator defined INFERRED Indicates whether or not VOLTAGE was inferred using one of the methods outlined in the Process Description. ORNL, LANL, INL, NGA, & HSIP Y Voltage was inferred Originator defined N Voltage was not inferred Originator defined SUB_1 The name of the associated substation from the substations feature class/shapefile. The responsible organization as identified in the SOURCE field. SUB_2 The name of the associated substation from the substations feature class/shapefile. The responsible organization as identified in the SOURCE field. METHOD Methodology used to validate geospatial location and/or attribution for the feature. ORNL, LANL, INL, NGA, & HSIP IMAGERY The best available imagery used to determine the location. Originator defined IMAGERY/OTHER Imagery and supplemental open source information used to determine the location. Originator defined OTHER Open source information used to determine the location. Originator defined UNVERIFIED Feature could not be located or the feature has not yet been validated. Originator defined DATE_ Date when geospatial location and/or attribution were last validated for the feature. ORNL, LANL, INL, NGA, & HSIP SOURCE Original source used to identify geospatial location and/or attribution for the feature. ORNL, LANL, INL, NGA, & HSIP DESCRIPT Description of line based on "POWER TRANSMISSION LINE (VOLTAGE: " & [VOLT_CLASS] & ")". GeoPlan FGDLAQDATE Date FGDL acquired the data from the Source. GeoPlan AUTOID Unique ID added by GeoPlan GeoPlan SHAPE.LEN Length in meters GeoPlan The entity and attribute information provided here describes the tabular data associated with the data set. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the data set. Please see the "Processing Steps" section for further methodology. For string and date data types, NOT AVAILABLE values denote missing data that was not present in the source data. For numeric data types, -999999 denote missing data that was not present in the source data. However, the missing data may be present in other sources not yet discovered and used in the creation and/or maintenance of this dataset. These records may be populated with valid information in future update cycles. Attribute fields were populated using sources identified in the SOURCE field for the period covered in the Time Period metadata and other open source data. For string and date data types, NOT AVAILABLE values denote missing data that was not present in the source data. For numeric data types, -999999 denote missing data that was not present in the source data. However, the missing data may be present in other sources not yet discovered and used in the creation and/or maintenance of this dataset. These records may be populated with valid information in future update cycles. Oak Ridge National Laboratory Florida Geographic Data Library (FGDL) mailing

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Gainesville Florida 32611-5706 US Web site: http://www.fgdl.org Mailing list for FGDL: http://www.fgdl.org/fgdl-l.html For FGDL Software: http://www.fgdl.org/software.html FGDL Frequently Asked Questions: http://www.fgdl.org/fgdlfaq.html Technical Support: http://www.fgdl.org/fgdlfeed.html DOWNLOADABLE 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 Vector Digital Data Set (Polyline) None. No fees are applicable for obtaining the data set. This data is intended for use with a Geographic Information Systems or Remote Sensing software package. 20200303 Oak Ridge National Laboratory mailing and physical

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