Transport for NSW Maritime says it will schedule additional patrols on Narara Creek following concerns about speeding power boats.
Residents have been raising the issue with Maritime since 2021, concerned about the danger from the high speed of some of the boats in the creek which is a four-knot, no-wash zone.
They say the wash from the boats is also causing environmental problems for the mangroves and wildlife.
NSW Maritime says that there are penalties for speeding from $100 upwards.
“Boaters who commit serious or repeat offences can have their licence cancelled or their vessel taken away,” Maritime said in a statement.