Country: USA
Address: 153 Valley Forge Rd, Weston, CT 06883, USA 
Long time swimming / jumping spot. 15-20ft cliffs - my gramps went here in the 30s. Cops will roll thru and shoo teenagers away. Water comes out from the bottom of a reservoir and is ice cold.
This is a swimming spot where you can also jump into the water!
Location on the map: