AFTER heavy rainfall soaked the Gold Coast last week, Southeast Queensland’s water security is high, with the 12 key dams now sitting at a healthy 92%.
An average of 125 to 300mm of rain fell across the catchments with parts of the Gold Coast receiving some of the heaviest falls, topping up dam levels that had dropped over the dry summer months.
Hinze Dam, the main drinking water supply for the city, is now at 95.2%.
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Little Nerang Dam is still spilling after last weeks drenching, receiving significant inflows and having increased by more than 20%.
Inflows to South East Queensland’s dams were the highest since early 2013, with almost two months of water supply flowing into the Grid 12 dams.
Despite the heavy rainfall, dam release operations were not required from Wivenhoe, Somerset, North Pine or Leslie Harrison dams. Operational releases from Somerset Dam into Wivenhoe were undertaken to keep Somerset below full supply level.
Based on current catchment conditions, it’s estimated between 10mm to 30mm of rainfall is needed to saturate the ground before any runoff to dams could be expected.
Less than 10mm of rain is forecast to fall across the region over the coming days.
Seqwater closely monitors rainfall, catchment conditions and dam levels throughout the year.
To be notified of dam releases or spilling dams, register for Seqwater’s free dam release notification service. Visit www.seqwater.com.au to register and receive updates straight to your mobile phone, email or landline phone.