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MassGIS Data: EPA Designated Sole Source Aquifers

MassGIS (Bureau of Geographic Information)

    /September 2020/ *This layer depicts the seven sole source aquifers (SSA) in Massachusetts. An SSA is an aquifer designated by the U.S. Environmental Protection Agency [1] as the 'sole or principal source' of drinking water for a given aquifer...

    MassGIS Data: Aquifers

    MassGIS (Bureau of Geographic Information)

      /July 2007/ *Underground water sources of high, medium and low yield are in this layer.* Download this layer [1] (3.7 MB) ESRI shapefile with ArcGIS 10.0 layer file [2] MassGIS produced an aquifer datalayer composed of 20 individual...