MODPATH Model Used to Evaluate Flowpaths from Two Contaminant Plume Source Areas near Joint Base Cape Cod, Western Cape Cod, Massachusetts
The U.S. Geological Survey (USGS) used an existing groundwater flow model to determine steady-state groundwater flowpaths from two contaminant plume source areas by using a particle tracking post-processing model (MODPATH; Pollock, 2012) as part of an assessment of potential contaminant discharge at the coast in Bourne, Massachusetts. The extents of the source areas, originating from two separate tanker-truck rollovers, were determined and documented by the Air Force Civil Engineer Center (AFCEC, 2025). The existing groundwater model is a steady-state, three-dimensional MODFLOW-2005 model of the Sagamore flow lens of the Cape Cod aquifer documented by Walter and others (2019). This USGS data release contains the input and output files for the MODPATH simulations described in the associated journal manuscript (https://doi.org/gwat.70063.).
Associated journal manuscript:
--------------------------------------
Briggs, M.A., White, E.A., Scordato, P.T., Lind, H.G., O'Neal, Z.O., Rey, D.M., McCobb, T.D., Green, C.T., and LeBlanc, D.R., 2026, PFAS from a discrete-event terrestrial source migrates with groundwater to intertidal seepages: Submitted to Groundwater,
https://doi.org/10.1111/gwat.70063.
References:
--------------------------------------
Air Force Civil Engineer Center (AFCEC), 2025 (March), Final remedial investigation report for
Per- and Polyfluoroalkyl substances at tanker truck rollover sites, Joint Base Cape Cod, MA.
696027-EC-TTRS-RPT-004. Prepared by CH2M for AFCEC/JBCC, Installation Restoration Program, Otis Air National Guard Base, MA.
Pollock, D.W., 2012, User guide for MODPATH version 6—A particle-tracking model for MODFLOW: U.S. Geological Survey Techniques and Methods, book 6, chap. A41, 58 p., accessed December 1, 2025, at https://doi.org/10.3133/tm6A41.
Walter, D.A., McCobb, T.D., and Fienen, M.N., 2019, Use of a numerical model to simulate the hydrologic system and transport of contaminants near Joint Base Cape Cod, Western Cape Cod, Massachusetts: U.S. Geological Survey Scientific Investigations Report 2019-5139, 98 p., https://doi.org/10.3133/sir20185139.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "Timothy D McCobb", "@type": "vcard:Contact", "hasEmail": "mailto:tmccobb@usgs.gov" } |
| description | The U.S. Geological Survey (USGS) used an existing groundwater flow model to determine steady-state groundwater flowpaths from two contaminant plume source areas by using a particle tracking post-processing model (MODPATH; Pollock, 2012) as part of an assessment of potential contaminant discharge at the coast in Bourne, Massachusetts. The extents of the source areas, originating from two separate tanker-truck rollovers, were determined and documented by the Air Force Civil Engineer Center (AFCEC, 2025). The existing groundwater model is a steady-state, three-dimensional MODFLOW-2005 model of the Sagamore flow lens of the Cape Cod aquifer documented by Walter and others (2019). This USGS data release contains the input and output files for the MODPATH simulations described in the associated journal manuscript (https://doi.org/gwat.70063.). Associated journal manuscript: -------------------------------------- Briggs, M.A., White, E.A., Scordato, P.T., Lind, H.G., O'Neal, Z.O., Rey, D.M., McCobb, T.D., Green, C.T., and LeBlanc, D.R., 2026, PFAS from a discrete-event terrestrial source migrates with groundwater to intertidal seepages: Submitted to Groundwater, https://doi.org/10.1111/gwat.70063. References: -------------------------------------- Air Force Civil Engineer Center (AFCEC), 2025 (March), Final remedial investigation report for Per- and Polyfluoroalkyl substances at tanker truck rollover sites, Joint Base Cape Cod, MA. 696027-EC-TTRS-RPT-004. Prepared by CH2M for AFCEC/JBCC, Installation Restoration Program, Otis Air National Guard Base, MA. Pollock, D.W., 2012, User guide for MODPATH version 6—A particle-tracking model for MODFLOW: U.S. Geological Survey Techniques and Methods, book 6, chap. A41, 58 p., accessed December 1, 2025, at https://doi.org/10.3133/tm6A41. Walter, D.A., McCobb, T.D., and Fienen, M.N., 2019, Use of a numerical model to simulate the hydrologic system and transport of contaminants near Joint Base Cape Cod, Western Cape Cod, Massachusetts: U.S. Geological Survey Scientific Investigations Report 2019-5139, 98 p., https://doi.org/10.3133/sir20185139. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P1EFCXGU", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.6952b0dfd4be025cc4b59993.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_6952b0dfd4be025cc4b59993 |
| keyword |
[ "Bourne", "Cape Cod", "Joint Base Cape Cod", "MODFLOW2005", "MODPATH6", "Massachusetts", "USGS:6952b0dfd4be025cc4b59993", "environment", "geoscientificInformation", "groundwater and surface-water interaction", "groundwater flow", "inlandWaters", "modeling" ] |
| modified | 2026-04-16T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -70.63000, 41.67100, -70.57600, 41.69400 |
| theme |
[ "geospatial" ] |
| title | MODPATH Model Used to Evaluate Flowpaths from Two Contaminant Plume Source Areas near Joint Base Cape Cod, Western Cape Cod, Massachusetts |
