Towradgi Creek

Our water quality monitoring program has shown Towradgi Creek to have fair water quality. Find out more about the estuary and its unique features.

Towradgi Creek is a small saline coastal lagoon with an intermittently closed entrance located in the Illawarra region of Wollongong New South Wales.

Estuary health and features

Water quality

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 Towradgi Creek River was completed over the 2011–12 summer when 2 sites were sampled on a monthly basis.

Towradgi Creek water quality report card for algae and water clarity showing colour-coded ratings (red, orange, yellow, light green and dark green, which represent very poor, poor, fair, good and excellent, respectively). Algae is rated 'fair' and water clarity is rated 'poor' giving an overall rating of 'poor' or 'D'.

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.

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

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

Find out more about our estuary report cards and what each grade means. Read our sampling, data analysis and reporting protocols and find out how we calculate these grades.

We have monitored water quality in Towradgi Creek since 2007. This table shows the water quality grades for this estuary over that time.

Towradgi Creek historic water quality grades from 2008-09 for algae and water clarity. Colour-coded ratings (red, orange, yellow, light green and dark green represent very poor (E), poor (D), fair (C), good (B) and excellent (A), respectively).

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

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

Physical characteristics

Estuary type: Creek

Latitude (ºS) –34.38
Longitude (ºE) 150.92
Catchment area (km2) 8.6
Estuary area (km2) 0.04
Estuary volume (ML) 11.2
Average depth (m) 0.3
Notes: km2 = square kilometres; m = metres; ML = megalitres.

Water depth and survey data

Bathymetric and coastal topography data for this estuary are available in our data portal.

Land use

The Towradgi Creek catchment is highly disturbed with urban development accounting for roughly two-thirds of land use. The townships of Towradgi and Tarrawanna to the north of Wollongong, are in this catchment. About one third of the catchment remains forested.

National and marine parks

Community involvement

  • There are over 60 bushcare groups in the Wollongong area. Bushcare volunteers help regenerate and care for local bushland.
Towradgi Creek

Local government management

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

Wollongong City Council manage the Towradgi Creek estuary.