The Central West Catchment occupies an area of approximately 92,000 square kilometres. It includes the Castlereagh, Bogan and Macquarie River valleys.
Fish movement within the catchments can be restricted by in-stream barriers. A report on reducing the impact of weirs in the Central West is available.
One of NSW DPI's activities to rehabilitate aquatic habitat is to remove or modify weirs. A case study of the removal of Fairbridge Weir is available.