New Mill Pond

New Mill Pond is a lake in Smithtown on the Northeast Branch River in Suffolk County, New York and is used for recreational purposes. Construction was completed in 1825. It has a normal surface area of 109 acre. It is owned by Suffolk County Parks Department.

New Mill Pond Dam is of earthen construction. Its height is 15 ft with a length of 465 ft. Its capacity is 545 acre.ft. Normal storage is 308 acre.ft. It drains an area of 23.02 sqmi.