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Use of particle tracking to improve numerical model calibration and to analyze ground-water flow and contaminant migration, Massachusetts Military Reservation, western Cape Cod, Massachusetts

Open-File Report 96-214

By:
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Abstract

A steady-state, three-dimensional flow model coupled with a particle-tracking algorithm was developed to assess the complex interaction of hydrogeologic conditions affecting ground-water flow and contaminant transport --including aquifer heterogeneities, hydrologic boundaries such as ponds and streams, ground-water withdrawals, and aquifer recharge to characterize the migration of contaminants emanating from beneath the Massachusetts Military Reservation, Cape Cod, Massachusetts. The known extent of contaminant plumes were used to assess the effects of changes in model input parameters on model-calculated water-table and pond altitudes, streamflow, and water-particle pathlines. Although changes in selected simulated hyodrogeologic conditions resulted in minor changes in model-calculated water-table altitudes, pond altitudes, and streamflow, these changes had significant effects on the projection of model-calculated water-particle pathlines. Therefore model calibration based simply on water levels and streamflows may be inadequate for the prediction of contaminant migration. However, model calibration that includes the sensitivity of water-particle pathlines to changes in hydrogeologic conditions can provide a valuable tool for optimizing data collection, characterizing hyodrogeology, and remediating ground-water contamination.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Use of particle tracking to improve numerical model calibration and to analyze ground-water flow and contaminant migration, Massachusetts Military Reservation, western Cape Cod, Massachusetts
Series title:
Open-File Report
Series number:
96-214
Edition:
-
Year Published:
1996
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
v, 50 p. :ill., maps ;28 cm.