Happy Valley Reservoir

Happy Valley Reservoir

The Happy Valley Reservoir was built between 1892 and 1897. The 547,000 cubic metres of fill needed for the site was hauled in by small steam locomotives.

From 2002 to 2004, the reservoir was upgraded and meets international standards.

Capacity: 12,650 megalitres.

If this reservoir supplied the whole state, how long would this last? Almost 20 days (19.8 days).

Area of water spread: 178 hectares.

Public access No.

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

An archive photo of the Happy Valley water works

East side of the Happy Valley Reservoir embankment

Skip to data table

Total Happy Valley Reservoir level
  • 79
  • 81

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)
12.6108010.210.16.40

  • 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
  • Delhi Av
  • Hillcrest
  • 22/05/2019
  • Temporary Supply Interruption
  • Estimated start time and water supply off: 23/05/2019 09:00 AM
    Estimated restore time and water supply back on: 23/05/2019 06:00 PM

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