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. To view the data, select a state and then a county from the drop-down lists. To view another county, close the Public Viewer window, return to the home page of the NPMS website and click the NPMS Public Map Viewer button again. The user may zoom in to a map scale of 1:24,000. Data cannot be downloaded from the Public Viewer.
