Perth and Peel groundwater, rainfall and streamflow

Gingin

Groundwater levels at the representative bore in Gingin are tracking to be lowest on record and are lower than groundwater levels recorded in 2023.

The Gingin groundwater and surface water allocation plans: 2024 evaluation statement includes updated management arrangements to help prevent further declines in groundwater levels associated with climate change and abstraction. 

Gnangara

Groundwater levels at the representative bore in Gnangara are tracking well below average and are higher than groundwater levels recorded in 2023.

The 2022 Gnangara groundwater allocation plan sets out how we will manage the Gnangara groundwater system – Perth’s largest natural water resource – to continue adapting to climate change and to rebalance the system by 2032 by reducing groundwater abstraction by 54 GL/year.

Jandakot

Groundwater levels at the representative bore in Jandakot are tracking well below average and are higher than groundwater levels recorded in 2023.

Under Kep Katitjin – Gabi Kaadadjan Waterwise action plan 3, we are reviewing groundwater allocation limits in this area to manage groundwater for its sustainable use in the context of climate change.

Mandurah

Groundwater levels at the representative bore in Mandurah are tracking below average and are higher than groundwater levels recorded in 2023.

The 2022 Murray groundwater areas allocation statement describes our review of allocation limits in the Murray groundwater area in response to climate change and less recharge to aquifers in the area.  

Gingin Brook

As at November 2024, the Gingin Brook site was tracking to receive average rainfall for January to December, given the average amount of rain received through the year and the Bureau of Meteorology’s forecast.

If the amount of rain differed from the forecast, the range of rainfall at Gingin Brook across January to December was tracking to remain as average. 

Gingin Brook

As at November 2024, the amount of water flowing at the Gingin Brook site was tracking to be well below average, given the Bureau of Meteorology’s forecast and the conditions throughout the year (including summer’s dry conditions).

If the amount of streamflow differed from the forecast, Gingin Brook streamflow across January to December was tracking to be:

• at most, well below average
• or, if the lowest amount of monthly streamflow since 1975 happened again, a record low.