Myponga Reservoir

Myponga Reservoir

Myponga is a concrete arch dam with a ski-jump spillway. It was completed in 1962.

When the pipeline from the dam was being built, one worker had a lucky escape. He was working inside the pipe, about 150 m downstream of the dam. There was a sudden rock-slide and he and the pipe were buried. When the debris was cleared away, the worker was found unhurt.

Before the Myponga Water Treatment Plant was built in 1993, water from Myponga was used to supplement the Happy Valley Reservoir.

Capacity: 26,800 megalitres.

If this reservoir supplied the whole state, how long would this last? Almost 46 days (45.8 days).

Area of water spread: 280 hectares.

Public access:  1 October to 30 March, 7.30am – 8pm, 1 April to 30 September, 7.30am – 5pm. Closed on Christmas Day, Total Fire Ban Days and for operational activity (gates will be closed).

Current reservoir capacity: For current volume please click on the map below.

Myponga reservoir in 1960

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Total Myponga Reservoir level
  • 70
  • 79

Capacity, volume and rainfall levels across reservoirs supplying metropolitan Adelaide, compared to last month last year
Capacity (GL) Volume this week (GL) Volume this week (%) Volume this week last year (GL) Average Volume this month (GL) Rainfall this week (mm)
27.619.37021.719.49.20

  • Major faults

  • Underway

  • Nioka Rd
  • Dernancourt
  • 22/05/2019
  • Water Supply Interrupted
  • Last Updated: 22/05/2019 06:20 AM - We are on site in Dernancourt and the nearby water supply may be unavailable until 22/05/2019 12:00 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: 06942825.
  • See all major faults

  • Scheduled works

  • Underway
  • Wandana Ave
  • Seaview Downs
  • 22/05/2019
  • Temporary Supply Interruption
  • Estimated start time and water supply off: 02/05/2019 04:01 PM
    Estimated restore time and water supply back on: 28/06/2019 04:01 PM

    We’re improving your services and undertaking maintenance work in Seaview Downs. 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

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