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Update 19/10/2021: The Glenmaggie Spill period has been extended to 2nd November.

Good inflows to Lake Glenmaggie in recent months and the wet outlook have led to controlled releases to safely manage capacity in the storage.  SRW had a target date of 1 October to fill the storage.

Southern Rural Water (SRW) confirmed that with the current storage level at 92%, and above-average inflows and predicted rainfall for the rest of spring, spill entitlement has been declared for all Macalister Irrigation District customers.

Acting Manager Water Supply East, Matt Cook said that water ordered and used from the start of the season through to Tuesday 7 September will now become spill entitlement.  “This means water used to this date is considered over and above customers’ 100% allocation. After 7 September, we will continue to review spill entitlement on a regular basis,” he said.

He said that the spill was a welcome boost to MID customers. “We announced 100% allocation at the start of the season, to give customers the confidence to plan their irrigations in advance. Customer demand has not been as high as usual for this period due to the conditions.  With a few warm days this will increase,” he said.

Given the wet conditions and predictions of above-average spring rainfall across Lake Glenmaggie’s extensive catchment, SRW made controlled releases in recent months, according to its release management plan. Manager Headworks, Ed Smith, said that the goal of the plan is to ensure the storage is full when customers need it, while protecting the integrity of the dam and minimising the risk to communities downstream, from flooding.

Lake Glenmaggie daily storage levels can be found on the SRW webpage SRW will continue to manage the volume of water stored in Lake Glenmaggie based on predicted rainfall and catchment conditions.