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Environmental Change and Management : Sydney Harbour

Year 9 Geography

Issues in Society- PDF

Oceans cover over 70% of the Earth’s surface and contain a diverse array of species,  habitats and ecosystems. As many as 100 million species live in our oceans,  contributing to a rich biodiversity far exceeding that found on land.  Marine extinction risk has ramped up rapidly in the past 50 years,  to converge upon the level of risk seen on land. 

Sydney Harbour

Sydney Harbour Catchment Water Quality Improvement Plan (SHCWQIP) was developed using an integrated hydrological and ecological modelling approach. The objectives of the project are to achieve an improvement in the water quality and ecological integrity of Sydney Harbour and its catchment; to engage key land managers and other stakeholders in the project design and process, and encourage ownership of the outcomes.

The North District’s coast and waterways shape its landscape and character. They are natural assets, cultural resources and recreational destinations. As the District grows, greater housing density around waterways, and more people looking to use waterways for recreation, will mean that these assets will need to be carefully managed so they continue to support a wide range of activities.

Water Pollution Alerts Sydney- NSW Office of Environment and Heritage-Sydney Harbour Daily Pollution Forecasts 


Shocking Levels of Pollution in Sydney Harbour - Channel 7 News

Craig Reucassel dives underwater to discover the shocking amount of plastic waste that ends up in our oceans, which in turn becomes ingested by our marine life.

Marine toxicologist Dr Emma Johnston, from UNSW's School of Biological, Earth and Environmental Sciences, gives the low down on the health of Sydney's iconic harbour waters.

Botany Bay and Catchment Water Quality Improvement Plan

This document is a Water Quality Improvement Plan developed for Botany Bay and its Catchment. It has been developed by the Sydney Metropolitan Catchment Management Authority, primarily with funding from the Australian Government through its Caring for Our Country Program.

Beachwatch- NSW Government


Each year, 3500 cubic metres of litter is collected from Sydney Harbour. This is the equivalent of 44,000 wheelie bins worth of litter in our water.

But in good news, we're partnering with local groups, councils and State Government to install new technologies across Sydney Harbour to help prevent plastic pollution ending up there