Wiltshire Police are appealing for information regarding John Shalies, 27, from Swindon.
In a statement, a spokeswoman writes: John Shailes was out with friends on Friday 12 July 2013 and had been drinking at the Tawny Owl Pub,Taw Hill. He and friends then went to Mouldon Hill Park Lake and he was last seen in the area at approximately 8pm.
Police and WILSAR (Wiltshire Search and Rescue) are searching the area.
His family are very concerned that he hasn’t returned home which is out of character.
John is described as white, approximately 5’10 and of muscular build. He has blonde hair and was wearing shorts and trainers.
Inspector Paul Hawkins said: ‘We are very concerned for John’s welfare and are conducting searches in the area of Moulden lake. It is important that anyone who has seen John since 8:00 pm yesterday evening contacts us urgently.’
Anyone with information is asked to contact Wiltshire Police on 101.