Hoons broke into Henley Lake's wetlands over the weekend, tearing up the turf that is close to the home of many of Wairarapa's urban bird and wildlife populations.
Masterton District Council spokesman Sam Rossiter-Stead said the council was disappointed by the Saturday night hooning which has caused significant damage to the wetland's turf.
"This vandalism is extremely disappointing and has been referred to the police to follow up," he said.
"We believe they entered via a chain gate which was cut, but we are in the process of gathering more information.
"We will repair the damage to the grass when the area dries out."