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Bedrock Regional Aquifer Systematics Study


Municipal well field studies Geologic mapping in Massachusetts by Gregory Walsh has focused on detailed studies in the vicinity of municipal well sites, in cooperation with Forrest Lyford of the USGS Massachusetts-Rhode Island District, resulting in three open-file reports on areas near the towns of West Newbury, Maynard, and Paxton. The characterization of the bedrock geology in each area is part of a study on delineating contributing areas to public-supply wells and hydrologic responses to pumping in fractured-bedrock aquifers. The purpose of the geologic aspect of this study is to describe the characteristics of the bedrock that may influence ground water flow and to identify potential directions of anisotropy in the fractured bedrock. In the West Newbury study, in particular, a close relationship was found between contributing area and structural anisotropy.

Map of Massachussets showing the I-495 corridorI-495 corridor mapping BRASS is planning to produce bedrock geologic maps of selected 7.5-minute quadrangles in the rapidly-developing corridor along and near Interstate 495, west and south of Boston, with a focus on the hydrogeology of the Nashoba terrane. This program will be conducted in cooperation with Stephen Mabee, Massachusetts State Geologist, the Massachusetts Department of Environmental Protection, and the Massachusetts Department of Environmental Management.

On-line publications:

Bedrock Geology in the Vicinity of the Knowles and Andreas Well Sites, West Newbury, MA
Bedrock Geology in the Vicinity of the Rockland Avenue Well Site, Maynard, MA
Bedrock geology in the vicinity of the Leicester well site, Paxton, MA

Related links:

USGS Massachusetts/Rhode Island District
Massachusetts Department of Environmental Protection
Massachusetts Department of Environmental Management
Office of the Massachusetts State Geologist

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U.S. Department of the Interior, U.S. Geological Survey, Reston, VA USA
Maintained by: Boris Barrios
Contact: Bill Burton
Last modification: 27-Aug-2004
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