Volunteers have strapped on their boots and donned work gloves to help restore Stonequarry Creek to its former glory.
The iconic waterway was damaged when a severe storm battered Picton three years ago.
Volunteers from Boral and Conservation Volunteers Australia (CVA) helped Wollondilly Council workers give the creek a much-needed spruce up.
The council's sustainability projects manager Damion Sterling said the crew tackled three main projects.
"We removed some of the woody weeds along the creek to reduce flood risks, we also removed the vine weeds that strangle out the native plants along the creek," he said.
"The council also has a bush tucker garden down here that we use to educate people on bush foods and we gave that a tidy up and planted new plants so that it'll be ready to come spring."
Mr Sterling said the council had conducted conservation work along the creek since 1995.
"Because this was once a farming district a lot of the land was flattened out," he said.
"We have worked hard to plant natives and create a habit for native animals like water dragons and the beautiful bird life we have here."
Mr Sterling said the volunteers had achieved more than he expected.
"They had got so much done before it had even reached lunch time," he said.
"There has been a lot of laughing and chatting as well - it's been great.
"Hopefully this will be the first of many more events like this to come."
The work was undertaken as a part of Boral's on-going commitment to partner with community groups in the region to make a contribution to environmental conservation and education.
Boral's group health, safety and environment director Michael Wilson said Boral had partnered with CVA since 1988.
"We are delighted to have celebrated over 30 years of partnership with CVA, which reflects our long-term commitment to supporting the communities in which we operate," Mr Wilson said.
CVA chief executive Phil Harrison said the volunteering initiative was a great way to give back while having fun.
"The program provides a creative, fun and engaging way for students and community groups to learn about their local environment," he said.
"With the support of Boral these conservation projects become a reality, leaving a lasting legacy for everyone to enjoy."
The project also included a tour along the creek, addressing topics of local biodiversity and stream health, living with grey-headed flying foxes, stream and river processes and the potential risks of climate change.
Mr Sterling urged locals to keep an eye on the council's website for their opportunity to help clean-up the creek in the next few months.