McColl said Watene grew up in Huntly and moved to Otautau when he got a job at a dairy farm.
"He loved farming and trucks and liked to work with the things he loved.
"I remember — I think it was 10 years ago, he had an injury to his foot while he was working but he never slowed down. He did not want anyone to feel sorry for him and did not want to let anyone down. He returned to work as quickly as he could."
Being a good father was another characteristic.
"He was a good father and never let his kids down. He tried his best for his kids."
The last time he spoke to Watene was at the beginning of April.
"He wished me a happy birthday — one week before he went missing.
"It has been extremely hard. We all knew that this kind of news could come. I thought I was ready for this, but the news today . . . it was hard."
Detective Sergeant Chris Lucy said a formal identification process was under way and a post-mortem was set for today.
"We will have a clearer understanding of the circumstances once the post-mortem has been completed."
Police offered their condolences to Watene's family and friends.
Lucy asked anyone with information to contact him on (03) 211 0400 or, alternatively, information could be passed anonymously to Crimestoppers on 0800 555 111.