Our water quality monitoring program has shown the Nullica River estuary to have good water quality. Find out more about the estuary and its unique features.
Nullica River is located on the south coast of New South Wales. It is classed as a lagoon with an intermittently closed entrance.
This estuary flows into Nullica Bay, which forms part of Twofold Bay south of Eden. Most of the catchment is forestry land.
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 Nullica River was completed over the 2011–12 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.
The report card shows the condition of the estuary was good with:
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.
Estuary type: Lagoon
| Entrance location |
Latitude (ºS) | –37.09 |
|---|---|---|
| Longitude (ºE) | 149.87 | |
| Catchment area (km2) | 54.8 | |
| Estuary area (km2) | 0.3 | |
| Estuary volume (ML) | 176.1 | |
| Average depth (m) | 0.6 | |
Bathymetric and coastal topography data for this estuary are available in our data portal.
The catchment of Nullica River is relatively undisturbed with 95% currently forested, most of which is managed by Forestry Corporation. A small amount of the lower catchment around Nullica and Boydtown is cleared for grazing and rural residential properties.
Local councils manage estuaries within their area unless the estuary is attached to a marine park. Bega Valley Shire Council manage this estuary.
The forests around Nullica River estuary provide a stronghold for the critically endangered smoky mouse.
Find out more about the biodiversity in our estuaries.