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The NPMS Public Map Viewer enables the user to view National
Pipeline Mapping System (NPMS) data one county at a time. NPMS data
consists of gas transmission pipelines and hazardous liquid
trunklines. It does not contain 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 Map Viewer.
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.
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To view the data, select a state and then a county from the
drop-down lists below. To view another county, click the Log Out
button or close the Public Viewer window, return to the home page of
the NPMS website and click the NPMS Public Map Viewer button again.
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 (approximately 0.2 miles on the scale bar), you will notice
that the pipelines have disappeared from the map. In order to see
the pipelines, you must either zoom out or set the scale to
1:24,000 or a greater number. Data cannot be downloaded from the
Public Viewer.
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You are accessing a U.S. Government information system, which
includes (1) this computer, (2) this computer network, (3) all
computers connected to this network, and (4) all devices and
storage media attached to this network or to a computer on this
network. This information system is provided for U.S.
Government-authorized use only.
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Unauthorized or improper use of this system may result in
disciplinary action, as well as civil and criminal penalties.
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By using this information system, you understand and consent to
the following:
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You have no reasonable expectation of privacy regarding any
communications or data transiting or stored on this information
system. At any time, and for any lawful government purpose, the
government may monitor, intercept, and search and seize any
communication or data transiting or stored on this information
system.
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Any communications or data transiting or stored on this
information system may be disclosed or used for any lawful
government purpose.
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