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Cowan Creek is located in New South Wales, Australia. It is a tidal subcatchment of the Hawkesbury River. Almost all of the catchment lies within Ku-ring-gai Chase National Park. Tributaries include Coal and Candle Creek, which branches off from Cowan Creek at Cottage Point and Smiths Creek.

v t e Waterways of the Sydney Metropolitan catchment, New South Wales, Australia
Major inlets and harbours	Botany Bay Broken Bay Middle Harbour Port Jackson Port Hacking
Minor bays and coves	Akuna Balls Head Bantry Berrys Blackwattle Burraneer Canada Careening Cove Cockle Dolans Double Elizabeth Gwawley Gymea Hen & Chicken Homebush Iron Cove Lavender Mosman Neutral Oatley Rose Rozelle Rushcutters Towlers Watsons Weeney White Woolooware
Lagoons	Dee Why Curl Curl Manly Narrabeen
Rivers	Cooks Duck Georges Hacking Hawkesbury Lane Cove Lennox (proposed) Nepean Parramatta Pittwater Woronora
Creeks	A'Becketts Angus Archer Badgerys Bardwell Bare Bedford Bellamy Farm Bellbird Bells Berowra Bidjigal Bilgola Blacktown Blaxland Blue Gum Boggywell Bonds Breakfast Brennans Brickmakers Bunbury Curran Bungarribee Burdekin Byrnes Cabramatta Caddies Cahill Camp Careel Carroll Charity Claremont Clear Paddock Creek Coal and Candle Coopers Cosgrove Cowan Coxs (Belfield) Cup and Saucer Darling Mills Deadmans Devlin Duck Eastern Erskine Eskdale Excelsior Finlaysons First Ponds Forbes Green Valley Frenchs Glenbrook Gore Grantham Greystanes Haslams Hunts Iron Cove Johnstons Kemps Knapsack Lalor Little Lowes Marsden McCarrs McKenzies McMahon's Maxwells Middle Harbour Mill Minchinbury O'Hares Orphan School Orphan School (Fairfield) Pendle Hill Powells Prospect Punchbowl Quakers Reedy Rileys Ropes Saleyards Salt Pan Sawmill Scout Second Ponds Smalls Smiths South Still Stoney Subiaco Tarban Terrys Thompsons Toongabbie Two Vineyard Werrington Whites Williams Wolli
Canals and streams	Alexandra Canal Busby's Bore Guildford West pipehead and water supply canal Hawthorne Canal Tank Stream Upper Canal System
Reservoirs	Balmain (disused) Botany Swamps Centennial Park Lake Burragorang Manly Dam Reserve Paddington (disused) Penshurst Petersham Lake Parramatta Prospect Upper Nepean Scheme Waverley
Adjoining rivers and bays	Akuna Brisbane Water Burke Cataract Colo Cordeaux Coxs Grose Hollanders Jenolan Jooriland Kedumba Kowmung Macdonald Mooney Mooney Mulwaree Nattai Tarlo Warragamba Wollondilly

33°37.1886′S 151°11.74314′E / 33.6198100°S 151.19571900°E / -33.6198100; 151.19571900