Coxs River is a river located in the state of New South Wales, Australia. It flows through the Blue Mountains region and is a tributary of the Hawkesbury River. The river is approximately 100 kilometers long and is known for its scenic landscapes and recreational opportunities, including fishing and hiking along its banks. The river's source is near Mount Walker, and it travels through various terrains before joining the Hawkesbury River. The surrounding area is rich in biodiversity, making it an important habitat for local wildlife. Coxs River also plays a role in the region's water supply and is significant for local communities.