20230809 vector digital data https://www.wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/1100_1199/ds1198.zip https://cecgis-caenergy.opendata.arcgis.com/datasets/california-electric-transmission-line The CEC Transmission Lines geospatial data layer contains electric power lines of transmission and some distribution or sub-transmission voltages covering California. Transmission lines can carry alternating current or direct current with voltages typically ranging from 110 kV to 765 kV. Transmission lines can be overhead and underground; underground transmission lines are more often found in urban areas. Sub-transmission lines generally carry voltages ranging from 33 kV to 100kV. These sub-transmission lines transmit power from higher voltage lines or other bulk power sources to local distribution network substations. An overhead power line can be single or double circuit. A single-circuit transmission line carries conductors for only one circuit. For a three-phase system, this implies that each tower supports three conductors. A double-circuit transmission line has two circuits. For three-phase systems, each tower supports and insulates six conductors. Single phase AC-power lines as used for traction current have four conductors for two circuits. Usually both circuits operate at the same voltage. In HVDC systems typically two conductors are carried per line, but in rare cases only one pole of the system is carried on a set of towers. The detailed descriptions on the structure type, material and circuit can be found at here. If you cannot access to the PDF, you may request us to send you a copy of the PDF. The transmission line, substation and power plant mapping database were started in 1990 by the CEC GIS staffs. The final project was completed in October 2010. The enterprise GIS system on CEC's critical infrastructure database was leaded by GIS Unit in November 2014 and was implemented in May 2016. The data was derived from utility companies and USGS topographic map. Some of the data was rectified from GE and Platts transmission line geospatial data. The sources for the transmission line digitizing are including sub-meter resolution of Digital Globe, Bing, Google, ESRI and NAIP aerial imageries, with scale at least 1:5,000. Occasionally, USGS Topographic map, Google Street View and Bing Bird's Eye are used to verify the precise location of a facility. The data was digitized from pole to pole for & gt;= 200 kV transmission lines. For transmission lines & lt; 200kV, the data was digitized on the pole gaps of approximately 1:5,000 or greater. All the data was digitized based on ground level of where a pole was planted. The transmission line was not digitized with one line segment from substation to substation. GIS Unit will merge the multipart lines into one segment in the future, after consulting with the Strategic Transmission Planning and Corridor Designation Office in identifying electricity flow between substation to substation or power plant to substation. Not all transmission line spatial data ended or started with a substation or power plant point spatial data. However, GIS Unit is current developing power plant and substation boundary spatial data which will enclose most of the transmission lines at both ends. California Electric Transmission Lines The California Energy Commission (CEC) Electric Transmission Line geospatial data layer has been created to display the electric transmission grid in California. When used in association with the CEC Power Plant and CEC Electric Substation geospatial data layers, viewers can analyze the geographic relationships with the electric transmission grids across utilities, counties and state. The transmission line data, as one of the CEC's critical infrastructure spatial data will be used to: 1. Support the CEC/STEP/Strategic Transmission Planning and Corridor Designation Office in corridor study and transmission line siting; 2. Support the CEC staffs various analysis by providing general geographic reference information; 3. Enhance communication between and among government agencies on emergency management, resource management, economic development, and environmental study; 4. Provide illustration of critical infrastructure spatial data to the public or other agencies in hard copy format. Complete Unknown -124.294270 -112.211877 42.086920 32.348423 None Electric Transmission Line, Imperial Irrigation District, Los Angeles Department of Water and Power, PacifiCorp, Pacific Gas and Electric Company, Southern California Edison, San Diego Gas & Electric, Sacramento Municipal Utility District, Western Area Power Administration ISO 19115 Topic Categories utilitiesCommunication None California None Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.All the data restriction must comply to Department of Homeland Security 6 CFR Part 29: Procedures for Handling Protected Critical Infrastructure Information.Do not disclose this GIS information/data to any unauthorized person because of its sensitive nature; to restrict disclosure of and access to this information/data to persons within my office; to not redistribute the information/data; and to refer requests for this information/data to the GIS/Cartography Unit of the Energy Commission and to the Energy Commission’s Chief Counsel’s Office.DISCLAIMER: The California Energy Commission makes no warranties, whether expressed or implied, as to the suitability or accuracy of the product for any particular purpose. Any use of this information is at the user's own risk. For further information or suggestions concerning maps/data, please contact: California Energy Commission- Energy Facilities Siting Division – Cartography Unit, 1516 9th Street, MS48, Sacramento, CA 95814. For any further questions, please call Terry Rose or Fui Thong or Travis David at (916) 654-3902. California Energy Commission (CEC), California Natural Resource Agency GIS@energy.ca.gov California Energy Commission (CEC), California Natural Resource Agency GIS@energy.ca.gov California Energy Commission Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 Vector String 6841 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.0001 0.0001 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds1198 Shape Feature geometry. Esri Coordinates defining the features. OBJECTID Internal feature number ESRI Sequential unique whole numbers that are automatically generated. Name Transmission line name, which is based on ownership and capacity, assigned by GIS Unit. kV kV_Sort Capacity in number as data type, which can be used for sorting, and mathematical function or calculation. Owner The ownership for a transmission line. Status The stage for a transmission line, which are including: Operational, Proposed, and Closed. Circuit Type of circuit: Single or Double. Type The transmission line type: OH: Overhead UG: Underground UW: Under Water. Legend The legend of the transmission line for mapping purpose, which is assigned by ownership and kV range. Length_Mile Transmission line length in miles. Length_Feet Transmission line length in feet. TLine_Name Transmission line name assigned by utility companies. Source Comments Creator Creator_Date Last_Editor Last_Editor_Date GlobalID Shape_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. 20230921 California Energy Commission (CEC), California Natural Resource Agency GIS@energy.ca.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time