https://www.usgs.gov/publications/water-resources-and-aquifer-yields-charles-river-basin-massachusetts-0
In 1984, about 66 Mgal/d (million gallons per day) of municipally supplied water was used by towns in the middle and upper Charles River basin and by the city...
the charles riverwater resourcesaquiferyieldsbasin
https://www.asce.org/about-civil-engineering/history-and-heritage/historic-landmarks/charles-river-basin-project
The Charles River Basin was one of the pioneering environmental engineering projects in America.
charles river basinprojectasce