Randall's Island Water Park name

Also once the East River was called the Sound River since that's where it goes, through Hellgate. The Zum Zum restaurants in NYC used to serve Hell and Dunkel beer (light and dark, in Bavaria). I read because of the rocks the tidal water were turned white, hence the term (before it was blasted away, in a record setting explosion). An experimental underwater electrical generator is being tested, recently a whole dam for electricity proposed across the river, the eastside first settled, because prevailing winds allowed sailing ships on and off the shore without a tow into the river.