The National Pipeline Mapping System (NPMS) includes a geographic information system (GIS) dataset containing the location and selected attributes of gas transmission and hazardous liquid pipelines, liquefied natural gas (LNG) plants and breakout tanks (BOT) under jurisdiction of the Pipeline and Hazardous Materials Safety Administration (PHMSA). Effective October 1, 2015, pipeline and LNG plant data is collected annually from pipeline operators as required by 49 CFR §§ 191.29 and 195.61. This metadata is for the national pipeline dataset. There is NPMS pipeline data for all 50 states as well as the District of Columbia and Puerto Rico. The NPMS pipeline dataset contains gas transmission and hazardous liquid pipelines subject to regulations from PHMSA. The NPMS pipeline dataset does not contain gas gathering, gas distribution, or hazardous liquid lines not subject to 49 CFR § 195.61 and can never be used in place of contacting a one call center prior to digging. Distribution of NPMS data in GIS format is handled for PHMSA by the National Repository and is limited to pipeline operators and local, state, tribal, and federal government officials and is subject to data access limitations and agreements. Fulfillments of data requests will include data only for the area of jurisdiction of the person requesting the data (data requests are fulfilled per county/counties, state, or the entire U.S.). Instructions for requesting NPMS data in a GIS format are outlined on the NPMS website at www.npms.phmsa.dot.gov.

The National Pipeline Mapping System (NPMS) Public Viewer enables the user to view NPMS pipeline, liquefied natural gas (LNG) plant and breakout tank data one county or offshore area at a time, including attributes and pipeline operator contact information. The user can also view gas transmission and hazardous liquid pipeline accidents and incidents going back to 2002 for the entire US. NPMS pipeline data consists of gas transmission pipelines and hazardous liquid pipelines jurisdictional to PHMSA. It does not contain gas gathering or distribution pipelines, such as lines which deliver gas to a customer 's home. Therefore, not all pipelines in an area will be visible in the Public Viewer. As well, the breakout tank data is not complete as submission of that data is not a requirement. All NPMS data is for reference purposes only. It should never be used as a substitute for contacting a one-call center prior to excavation activities. Please call 811 before any digging occurs.

To view the data, select a state or the federal waters category and then a county or offshore area from the drop-down lists below. To view another county or offshore area, click the Change County link at the top right corner of the map window. Please note that the Public Viewer limits the scale of pipeline maps, in accordance with PHMSA's security policy. When you are zoomed in closer than a 1:24,000 scale (above zoom level 14), you will notice that the pipelines have disappeared from the map. In order to see the pipelines, you must either zoom out to zoom level 14 or lower. Data cannot be downloaded from the Public Viewer. The boundary between counties and offshore state waters is for display purposes only and is not an official boundary.

The NPMS Public Map Viewer allows the general public to view maps of transmission pipelines, LNG plants, and breakout tanks in one selected county. Distribution and Gathering systems are not included in NPMS. Users are permitted to print maps of the data, but the data is not downloadable.Always contact Dig Safely at 811 before digging. Visit Call Before You Dig for more information.

The NPMS Public Map Viewer allows everyone, including the general public to view maps of Gas Ttransmission, Hazardous Liquid and Carbon dioxide pipelines, Liquefied Natural Gas (LNG) plants, and Hazardous Liquid breakout tanks in one selected county. Gas Distribution and Gas Gathering systems are not included in NPMS. Users are permitted to print maps of the data, but the data is not downloadable. Always call 811 before digging. Visit https://call811.com/Before-You-Dig for more information.

The NPMS Public Map Viewer allows the general public to view maps of transmission pipelines, LNG plants, and breakout tanks in one selected county. Distribution and Gathering systems are not included in NPMS. Users are permitted to print maps of the data, but the data is not downloadable.Always contact Dig Safely at 811 before digging. Visit Call Before You Dig for more information.

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The pipelines shapefile was digitized from Ai graphic files, where individual lines were traced from PDFs of individual county maps provided by the National Pipeline Mapping System(NPMS). Due to the sensitive nature of this data, the maps that were made available through NPMS are not precisely accurate and are intended for use at a county or regional scale.

Line features representing approximate pipeline locations in Chatham County, NC and surrounding counties. The main purpose of this dataset is to provide a visual display of said pipeline locations for critical infrastructure and emergency response planning. The NPMS is a geographic information system (GIS) dataset containing the location and selected attributes of the major gas transmission and hazardous liquid transmission pipelines, and liquefied natural gas (LNG) plants operating in United States and other offshore entities. Effective October 1, 2015 pipeline and LNG plant data is contributed annually by pipeline operators as required by the Pipeline Safety: Miscellaneous Changes to Pipeline Safety Regulations (http://www.regulations.gov/#!documentDetail;D=PHMSA-2010-0026-0054). This metadata is for the entire national dataset.Distribution of NPMS data is handled for PHMSA by the National Repository and is limited to pipeline operators and local, state, and federal government officials. Neither the United States Government nor any party involved in the creation and compilation of NPMS data and maps guarantees the accuracy or completeness of the products. NPMS data has a target accuracy of +/- 500 feet and resides in geographic coordinates. NPMS data must never be used as a substitute for contacting the appropriate local one-call center prior to digging.Chatham GIS SOP: "MAPSERV-76"