OFFICIALS at Carbrook Golf Club are anxiously waiting to confirm the presence of deadly bull sharks following the recent floods.

One staff member has reported sighting a fin in the club's largest lake, referred to as ``Shark Lake'', but it is yet to capture any evidence of the sharks which have brought Carbrook worldwide fame over the past 10 years.

General Manager Scott Wagstaff said every member would be keeping a close eye on the lake.

``One of the greens staff saw a fin last Saturday morning so we look good, but the water is so murky you can't see anything,'' Wagstaff said.

``We are just waiting for the water to clear up a little before I do a feeding and see what happens.''

It is thought the sharks, measuring up to 3m in length, found their way into the Lake during the 1996 floods where the Logan and Albert Rivers spilled onto the course and have since grown and bred.

Wagstaff said the 2013 floods were even worse and may have enabled the sharks to return to the river.

``The sharks have become part of the family at the club and it would be terrible to lose this fascinating and remarkable phenomenon that the members have become so proud of,'' Wagstaff said.

The sharks have brought the club widespread exposure with its youtube video of one of the sharks topping 2.2 million views.

The club even changed its logo in January 2012 with a reference to the shark and features a slogan `our hazards are deadly' and its major monthly event is titled the `The Carlton Mid Shark Lake Challenge'.

The Veterans Committee at the club raised $5000 in its flood recovery efforts which will be used to replace the spray tank unit.

