Melissa Fries, 37, was reported missing Saturday night after going swimming with friends.
State Police, Highland police, the U.S. Coast Guard and other agencies joined in a water search for the woman, who was reported missing around 11:15 p.m.
An investigation into the precise cause of death was pending an autopsy, but it appears to be accidental, authorities also said.
Click here to follow Daily Voice Mahwah-Ramsey and receive free news updates.