Police are "still hopeful" that 26-year-old Peter Reinhardt will be found alive.
The Riverstone father went missed on Tuesday night and is feared drowned after his tinny overturned on the Nepean River.
Hawkesbury local area command officers are co-ordinating the search for Peter, which also involves Marine Area Command and Polair, NSW Maritime and SES volunteers.
Since the unfortunate event the command post at the Yarramundi Bridge has been crowded with Peter's family and friends, search and rescue teams and media members.
Detective Inspector Bryson Anderson, who was at the scene today (Thursday, March 22), said they are continuing to search for Peter and are focusing on a stretch of the Nepean River between Windsor and Yarramundi.
He said fast flowing currents in the swollen waterway had made it difficult for search crews yesterday but that water levels had started to drop today which has allowed them to get better access.
"We are still hopeful that Peter is alive, however as time goes on the likelihood of rescuing him decreases," Det Insp Anderson said.
In another sad twist, the family home at Londonderry was broken into last night between 9 and 11.30pm while they maintained a waterside vigil.
Police from Penrith local area command are investigating the burglary and said the offenders stole jewellery, cash and a gun safe containing two firearms and ammunition before fleeing the scene.
Police are appealing for anyone who might have information about the break in to contact them via Crime Stoppers on 1800 333 000.