... 3 the last plank was driven, closing the other section and turning the water's course through the lock. On November 10 a temporary gate was closed therein, and for the first time in the history of Mystic river the tides of ocean ceased to ebb and flow above Cradock bridge. Daily the fresh water accumulated above the weirs, and at tide's ebb was allowed to flow out. For a month the level of the upper ...