This article is about the East River in New York City. The tidal strait changes its direction of flow frequently, and is subject to strong fluctuations in its current, which are accentuated by its narrowness and variety of depths. The a river in flood essay change in the shape of the strait between the lower and upper portions is evidence of this glacial activity. It is much narrower, with straight banks.
The bays that exist, as well as those that used to exist before being filled in by human activity, are largely wide and shallow. 1885, after many of the obstructions had been removed. 1780 while carrying gold and silver intended to pay British troops. The stretch has since been cleared of rocks and widened.