The proprietary Ecological USA data produced by NatureServe has expired. In accordance with the NatureServe data license agreement, PHMSA can no longer distribute their proprietary data product.
Download the Great Lakes Ecological USA data here.
Ecological USA are defined in 49 CFR 195.6. PHMSA previously chose to distribute proprietary Ecological USA data produced by NatureServe (https://www.natureserve.org/) to hazardous liquid pipeline operators for use in formulating their Integrity Management plans. These proprietary data were for informational purposes only and were one information resource operators could consider when identifying areas that meet the definitions in 49 CFR 195.6.
Download metadata from expired proprietary Ecological USA data (PDF)