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MODFLOW-2005, MODPATH, and MOC3D used for groundwater flow simulation, pathlines analysis, and solute transport in the crystalline-rock aquifer in the vicinity of the Savage Municipal Water-Supply Well Superfund Site, Milford, New Hampshire

Metadata Updated: January 16, 2026

The U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency and the New Hampshire Department of Environmental Services, developed a model for used with MODFLOW-2005 and MODPATH5 to evaluate groundwater flow and advective transport under pre- and post-remediation conditions in the crystalline-rock aquifer in the vicinity of the Savage Municipal Water-Supply Well Superfund site Milford, New Hampshire. In addition, a previously developed model (https://doi.org/10.3133/sir20045176 and https://doi.org/10.3133/ofr20121079) was used with MOC3D to evaluate the solute-transport of tetrachloroethylene (PCE). In 2010 PCE, a chlorinated volatile organic compound, was detected in groundwater from monitoring wells tapping the deep (more than 300 feet below land surface) fractures in a crystalline-rock aquifer. The crystalline-rock aquifer underlies the Milford-Souhegan glacial-drift (MSGD) aquifer (a high water-producing aquifer) and the Savage Municipal Water-Supply Well Superfund site. Residential water-supply wells are within one-quarter of a mile of the PCE-contaminated monitoring wells and many are likely installed in similar rock types and formations as those of the monitoring wells. The need to understand and quantify flow and transport in the crystalline- rock aquifer is crucial in assessing strategies for remediation. The current, area-wide model simulates flow in the crystalline-rock aquifer and covers a much larger area than previous models with the goal of improving the computation of groundwater flow from distal locations to the residential wells and the area. This USGS data release contains all of the input and output files for the simulations described in the associated model documentation report (https://doi.org/10.3133/sir20205137).

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date January 13, 2026
Metadata Updated Date January 16, 2026

Metadata Source

Harvested from DOI USGS DCAT-US

Additional Metadata

Resource Type Dataset
Metadata Created Date January 13, 2026
Metadata Updated Date January 16, 2026
Publisher U.S. Geological Survey
Maintainer
Identifier http://datainventory.doi.gov/id/dataset/USGS_226705a8-2a0e-4dda-8e36-84d2074d94c5
Data Last Modified 2025-08-05T00:00:00Z
Category geospatial
Public Access Level public
Bureau Code 010:12
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Metadata Catalog ID https://ddi.doi.gov/usgs-data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20260116141420
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Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
Harvest Source Title DOI USGS DCAT-US
Metadata Type geospatial
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