In the park's southeast corner is the Pond, with an area of 3.5 acres (1.4 ha).[69][70] The Pond was adapted from part of the former DeVoor's Mill Stream, which used to flow into the East River at the modern-day neighborhood of Turtle Bay.[33][71] The western section of the Pond was converted into Wollman Rink in 1950.[72][73][74]