Due to security concerns, the Pipeline and Hazardous Materials Safety Administration (PHMSA) does not provide unlimited access to the Drinking Water and Ecological Unusually Sensitive Area data. PHMSA is committed to providing pipeline related data to pipeline operators complying with integrity management programs and to community officials.
THERE HAVE BEEN NO UPDATES TO USA DATA LAYERS SINCE THEIR ORIGINIAL RELEASE.
Ecological USAs are used by pipeline operators in formulating their Integrity Management plans.
Ecological candidates of primary concern focused on the characteristics of rarity, imperilment, or the potential for loss of large segments of an abundant population during periods of migratory concentrations. These include:
An example of Ecological areas of primary concern in Texas.
Ecological USAs are defined by the following criteria:
An example of Ecological USAs in Texas.
Please note that due to security concerns, PHMSA cannot provide PDF maps of USAs.
If you wish to view the metadata, please select a state from the dropdown list below. The metadata may be viewed in HTML, parseable text or saved as a SGML file. If you wish to associate the metadata with the GIS file in Esri's ArcCatalog, please save the SGML version of the metadata locally. If you encounter difficulties in accessing the SGML version, please contact the National Repository at 703-317-6294 or
Ecological USA data will be provided to ONLY to pipeline operators who operate hazardous liquid pipelines or government officials.
Due to data security concerns, contractors/consultants will need to initiate requests for Ecological USA data through pipeline
operators or government officials. Thank you for your cooperation.
If you are a pipeline operator or government official and wish to receive Ecological USAs data, please email the following information to NPMS staff at
email@example.com with "USA Data Request" in the subject line.
ALL INFORMATION MUST BE PROVIDED BEFORE YOUR REQUEST CAN BE PROCESSED.
All states except Pennsylvania
*Drinking Water USAs:
All 50 states
If you are a pipeline operator or a federal/state/local government official and wish to receive the Ecological USAs final report, please email the NPMS staff at
firstname.lastname@example.org with "USA Ecological Final Report" in the subject line and include the list of states for which you wish to receive the report.