From the 1850s to the 1960s, the Bernon Street Dam offered protection to a former mill at 148 Bernon St. The dam was removed in the 1960s, and the flood protection for the nearby mill disappeared. Since then, the repeatedly swollen Blackstone River has worn down the land, eroding it and putting the condo complex in ever-growing danger, says Evan Starr, president the River Island Condo Association.     Read the article…………………………….