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- Hews Family
- Isabel Letham
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- Jervis and Bridget Sparks Collection
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- Beaches A-C
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- Natural Environment
- Street Names in Former Warringah
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- Suburbs
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- Duffys Forest (N.S.W.)
- Elanora Heights (N.S.W.)
- Elvina Bay (N.S.W.)
- Suburbs F-K
- Suburbs L-M
- Suburbs N-P
- Suburbs Q-W
- Surf Life Saving Clubs
- Service
Menu
- Community
- Aboriginal
- Businesses
- Clubs and Organisations
- Collections
- 1994 Bush fire damage
- Allen Family Album
- Aloisi Family
- Bill MacDonald Collection
- Cubis Collection
- Cunico Family
- Essie Weston (Nee Oliver) Collection
- Gee Family
- Gwen Gordon Collection
- Harbord Literary Institute Time Capsule
- Hayman Family
- Hews Family
- Isabel Letham
- Jervis and Bridget Sparks 1995
- Jervis and Bridget Sparks Collection
- Larkin Family
- Loebel Family
- McLean Collection
- N.S.W Academy of Sport Narrabeen
- Narrabeen houses Living History photos
- Osborne Family
- Penze Family
- Raffo Family
- Raicevich family
- Randell Family
- Salvation Army
- Sayce Family
- Steber Family
- Stormon Family
- The Rose Series
- Turvey Family
- Vescio family
- Weight family
- Windybank Family
- Yewen Family
- Demographics
- Early History
- Events and Celebrations
- Miscellaneous Histories
- Other
- People
- Recreation and Sport
- Athletics
- Athletics Swimming
- Australian Rules Football
- Ballet
- Baseball
- Beach Volley Ball
- Boating
- Bowling
- Bowls
- Boxing
- Camping
- Captain Ball
- Caravan Park
- Cricket
- Croquet
- Dancing
- Diving
- Fancy dress
- Fishing
- Fitness
- Football
- Golf
- Gymnastics
- Hand Gliding
- Holidays
- Horse Riding
- Karate
- Kayaking
- Lacrosse
- Lawn Bowls
- Music and Drama
- Netball
- Olympics
- Parks and reserves
- Parties
- Picnicking
- Quoits
- Rugby League
- Rugby Union
- Sailing and boating
- Skateboarding
- Skating
- Snooker
- Soccer
- Sporting Clubs
- Sporting individuals
- Squash
- Surf Life Saving
- Surf Life Saving Clubs
- Surfing
- Swimming
- Swimming Clubs
- Tennis
- tug-of-war
- Vigoro
- Walks
- Windsurfing
- Soldiers by Surname
- War
- Place
- Aerial Photographs
- Baths and Pools
- Beaches
- Beaches A-C
- Beaches D-K
- Beaches L-N
- Beaches P-S
- Beaches T-W
- Built Environment
- Former Manly LGA Streets
- Natural Environment
- Street Names in Former Warringah
- Subdivision Histories
- Suburbs
- Suburbs A-B
- Suburbs C-E
- Avalon (N.S.W.)
- Careel Bay (N.S.W.)
- Castle Hill (N.S.W.)
- Church Point (N.S.W.)
- Clareville (N.S.W.)
- Clontarf (N.S.W.)
- Coasters Retreat (N.S.W.)
- Collaroy (N.S.W.)
- Collaroy Plateau (N.S.W.)
- Cottage Point (N.S.W.)
- Cromer (N.S.W.)
- Curl Curl (N.S.W.)
- Davidson (N.S.W.)
- Dee Why (N.S.W.)
- Duffy's Forest (N.S.W.)
- Duffys Forest (N.S.W.)
- Elanora Heights (N.S.W.)
- Elvina Bay (N.S.W.)
- Suburbs F-K
- Suburbs L-M
- Suburbs N-P
- Suburbs Q-W
- Surf Life Saving Clubs
- Service
Northern Suburbs Ocean Outfall Sewer
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Main
AuthorJohn MorcombeDateMarch 2026DescriptionDeep below Clontarf, Balgowlah Heights, Balgowlah, Fairlight and Manly runs a tunnel carved through solid rock that was part of a project that was hailed as an engineering marvel for its time. The tunnel is one of the main components of the Northern Suburbs Ocean Outfall Sewer, which was built between 1916 and 1933 to serve one-third of Sydney’s population.SubjectsSewerage PlantNorth Head (Manly, N.S.W.)CopyrightThis item may be used freely for research and study purposes, for all other uses contact Northern Beaches Council Library Local Studies. Please acknowledge that the item is courtesy of John Morcombe.
John Morcombe, Northern Suburbs Ocean Outfall Sewer (March 2026). Northern Beaches Council, accessed 17/04/2026, https://northernbeaches.recollect.net.au/nodes/view/57203