Boston, MA 02115
The Charles River Basin looks to all appearances like the most visible and carefully preserved natural feature of Boston. Nothing could be further from the truth. In the nineteenth century the shallow basin, its nine-mile length edged with broad salt marshes from Watertown to Boston Harbor, was dammed for mills and filled for commercial and residential ventures. The bays of the lower Charles at low tide became vast expanses of stinking, sewage-laden mud flats.