Corunna Lake | Estuaries | Environment and Heritage
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Corunna Lake

Our water quality monitoring program has shown Corunna Lake to have good water quality. Find out more about the estuary and its unique features.

Corunna Lake is a small lagoon on the south coast of New South Wales. It has an intermittently open entrance and the entrance flows into the ocean after heavy rainfall.

Water quality report card

As part of our water quality monitoring program we assess the water quality and ecosystem health of an estuary using a range of relevant indicators. We sample a subset of the estuaries between Wollongong and the Victorian border every 3 years. The most recent sampling in Corunna Lake was completed over the 2020–21 summer, when 2 sites were sampled on a monthly basis.

This report card represents 2 water quality indicators that we routinely measure: the amount of algae present and water clarity. Low levels of these 2 indicators equate with good water quality.

D

Algae

A

Water clarity

C

Overall grade

The report card shows the condition of the estuary was good with:

  • algae abundance graded poor (D)
  • water clarity graded excellent (A)
  • overall estuary health graded fair (C).

Grades for algae, water clarity and overall are represented as: 

  • A – excellent 
  • B – good 
  • C – fair 
  • D – poor 
  • E – very poor.

Go to estuary report cards to find out what each grade means, read our sampling, data analysis and reporting protocols, and find out how we calculate these grades.

A view of Corunna Lake surrounded by rolling green hills and Loader Beach

Aerial view of Corunna Lake

Local government management

Local councils manage estuaries within their area unless the estuary is attached to a marine park.

Eurobodalla Shire Council manages this estuary, which is located in Batemans Marine Park.

Threatened species

Corunna Lake and the surrounding catchment area support a number of sea birds. One of these is the white-bellied sea eagle.

Find out about more about the biodiversity in our estuaries.