The Monday, July 15 cultural burn is taking place on 3.5 hectares from around 10am.

NPWS area manager Michael Phelan said it will deliver benefits for threatened species and protect the reserve from the potential spread of wildfire to surrounding private properties.

"This burn utilises Aboriginal cultural burning practices and involves Indigenous fire practitioners from the Nowra Aboriginal community," he said.

"Cultural burns often spark plant germination, including threatened plant species and help reduce surrounding weeds and reinvigorate the landscape."

"NPWS Aboriginal cultural burn programs support Indigenous land practises, integrate indigenous fire into the management of NSW National Parks and help build the capacity of Aboriginal people in fire management."

This is the first NPWS cultural burn in the Shoalhaven area. Smoke from the burn may be visible in the Nowra area for a number of days.

Smoke may also impact motorists driving along the Yalwal Road. Motorists are reminded to drive to conditions and observe warning signs or directions from fire crews.

Mr Phelan thanked residents for their understanding and advised anyone susceptible to respiratory problems to keep clear of the area or stay indoors.

For health information relating to smoke from bush fires and hazard reduction burning, visit NSW Health or the Asthma Foundation.

More information on hazard reduction activities visit the Rural Fire Service and the Rural Fire Service "Fires near me" App.