The Mooney Mooney Creek, a perennial river that is part of the Hawkesbury-Nepean catchment, is located in the Central Coast region of New South Wales, Australia. The Mooney Mooney Creek rises southeast of Central Mangrove below Peats Ridge, and flows generally south before reaching its confluence with the Hawkesbury River at the locality of M…The Mooney Mooney Creek, a perennial river that is part of the Hawkesbury-Nepean catchment, is located in the Central Coast region of New South Wales, Australia. The Mooney Mooney Creek rises southeast of Central Mangrove below Peats Ridge, and flows generally south before reaching its confluence with the Hawkesbury River at the locality of Mooney Mooney. The river descends 294 metres over its 32-kilometre course.