The Macquarie River - Wambuul is part of the Macquarie–Barwon catchment within the Murray–Darling basin, is one of the main inland rivers in New South Wales, Australia. The river rises in the central highlands of New South Wales near the town of Oberon and travels generally northwest past the towns of Bathurst, Wellington, Dubbo, Narromine, and Warren to the Macquarie Marshes. The Macquarie Marshes then drain into the Darling River via the lower Barwon River.