Blue Lake Reservoir

Blue Lake Reservoir

The Blue Lake at Mount Gambier in the state's south east is a volcanic crater that contains groundwater from local aquifer systems. The water seeps into the crater through porous limestone.

The total capacity of water in the lake has been calculated at 36,000 ML, making it the third largest water storage in South Australia. About 10% of the capacity is used each year by the regional City of Mount Gambier. Groundwater recharges the lake.

Water from the lake has been used for reticulated supply since the early 1880s.

The eruption that formed the volcanic crater is believed to have occurred nearly 5000 years ago.

Capacity: 36 gigalitres (one gigalitre is one billion litres), that will fill 18,000 Olympic swimming pools

Public access: Yes, via organised tours. There is access to adjoining Council land offering a walking trail and other interpretative facilities.

Opening times: Tours are available on request and are managed by Aquifer Tours. Council facilities are available 24 hours a day, seven days a week.

We currently don't monitor this reservoir's volume.

  • Major faults

  • Reported

  • Back Rd
  • Maitland
  • 31/03/2020
  • Water Supply Interrupted
  • Last Updated: 31/03/2020 10:04 AM - We are on site in Maitland and the nearby water supply may be unavailable until 31/03/2020 02:32 PM. Sometimes our crews need to temporarily interrupt the water supply to our customers and/or manage traffic while they are working. We always aim to minimise inconvenience by restoring supply as safely and quickly as we can. Reference Number WO: 07399965.
  • See all major faults

  • Scheduled works

  • Underway
  • Seaview Rd
  • Kingscote
  • 31/03/2020
  • Temporary Supply Interruption
  • Estimated start time and water supply off: 31/03/2020 09:00 AM
    Estimated restore time and water supply back on: 31/03/2020 03:00 PM

    We’re improving your services and undertaking maintenance work in Kingscote. Sometimes our crews need to temporarily interrupt the water supply to our customers and/or manage traffic while they are working. Temporary traffic management may remain in place until reinstatement of the impacted road is complete. We always aim to minimise inconvenience by restoring services as safely and quickly as we can.


  • See all scheduled works