BL01 "Obtain Transmission Pipeline Mapping Data"
Practice Statement Local government agencies responsible for land use and development planning or the issuance of development permits should obtain mapping data for all transmission pipelines within their areas of jurisdiction from PHMSA's National Pipeline Mapping System or from the transmission pipeline operators and show these pipelines on maps used for development planning.
Audience(s): Local Government
Transmission pipeline operators are required to submit pipeline location information to PHMSA's National Pipeline Mapping System (NPMS). Operators must update the information annually and include identification of an operator contact and an estimation of data accuracy. PHMSA combines data submittals from all transmission pipeline operators and displays the pipelines through a geographic information system (GIS) called the Pipeline Integrity Management Mapping Application (PIMMA). The raw GIS data viewed through PIMMA is available to local government officials.
When technically feasible, local governments should apply for raw NPMS data, which is available in ESRI shape file format. Details on obtaining the data appear below. The mapping data in NPMS is a valuable tool to initially obtain pipeline location data. Operators may provide more detailed maps. When transmission pipelines are shown on local government planning maps, they should be accompanied by a warning that the pipeline location information is not to be used as a substitute for calling the one-call damage prevention system before excavating. Since NPMS is updated annually by transmission pipeline operators, local governments should obtain updated data from the NPMS annually to check for the addition or retirement of pipelines. As mentioned, NPMS data includes contact information for each transmission pipeline operator if local governments need to contact them for additional information.
Online Data Access
It is recommended that local government agencies establish PIMMA accounts to view transmission pipeline data sets at the county level. The application for a PIMMA account is available online.
Access to PIMMA allows local government users to view transmission pipeline maps and pipeline attributes for transmission pipelines within their areas of jurisdiction. They may also create or print maps in the Adobe portable document format (PDF).
The NPMS Public Viewer is available to the general public. It allows users to view pipeline maps for a user-specified state and county, but does not offer as many attributes or as large a scale as the password-protected PIMMA viewer does. The NPMS Public Viewer is available online.
Raw Data Distribution
Local government agencies can also request pipeline GIS data in ESRI format for transmission pipelines within their areas of jurisdiction. Information about requesting raw data can be found online.
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- Baseline (BL) Recommended Practices: BL01 BL02 BL03 BL04 BL05 BL06 BL07 BL08 BL09 BL10 BL11 BL12 BL13 BL14 BL15 BL16 BL17 BL18
- New Development (ND) Recommended Practices: ND01 ND02 ND03 ND04 ND05 ND06 ND07 ND08 ND09 ND10 ND11 ND12 ND13 ND14 ND15 ND16 ND17 ND18 ND19 ND20 ND21 ND22 ND23 ND24 ND25 ND26 ND27 ND28
- Table of Recommended Practices