Ross River Dam Falls to 62% as Townsville Faces Driest StretchUpdated

Ross River Dam sat at 62 percent capacity as of Thursday morning, Townsville City Council confirmed, down from roughly 70 percent at the end of May and continuing a slide that has accelerated through an unusually dry June across the entire north Queensland coast. The drop is not yet an emergency, but it is the sharpest six-week decline the storage has recorded outside of a declared drought period since 2019.

The timing matters because July and August are historically the driest months on the Townsville calendar, with the Bureau of Meteorology's long-range outlook for the region showing below-median rainfall through to September. The dam, which sits on the Ross River upstream from Aplin's Weir and supplies the bulk of the city's drinking water for roughly 230,000 residents, typically needs to be carrying healthy reserves going into the wet season, which does not usually arrive until November at the earliest. A storage level below 40 percent triggers formal water-restriction reviews under council's Water Security Plan.

What Changed This Week

Council's Water Security team held an internal review on Wednesday at its Dalrymple Road operations facility, cross-checking inflow data against projected demand for the quarter. Daily water use across the Townsville network is running at approximately 95 megalitres, slightly above the seasonal average of 88 megalitres, which water officials attribute partly to the warmer-than-normal June — a pattern consistent with the record heat recorded further south this week. Mount Louisa and Rasmussen, two of the city's faster-growing residential corridors, account for a disproportionate share of that uptick, according to council data reviewed by The Daily Townsville.

Inflows into the dam since June 1 have totalled just 4,200 megalitres, compared with a long-term June average of around 11,500 megalitres. The shortfall is significant. At current consumption rates and with no meaningful rain, the storage loses roughly 2.8 percentage points per month to demand alone, before evaporation losses of an estimated 1,200 megalitres across the hotter months are factored in.

Townsville City Council's existing Level 1 water-use guidelines — introduced after the 2019 flood recovery period partly exposed vulnerabilities in the network — already ask residents to avoid outdoor watering between 10am and 4pm. Those guidelines remain in effect but are not being enforced with fines at this stage. The council's Target 180 program, which encourages households to keep daily use under 180 litres per person, is being promoted again through the My Neighbourhood newsletter and on screens at Stockland Townsville on Duckworth Street.

Longer-Term Pressures on Supply

The dam's trajectory is being watched particularly closely in the context of Townsville's hydrogen hub ambitions. The proposed industrial precinct at the Port of Townsville has flagged significant water requirements as part of its green hydrogen production process, and any tightening of the city's water security outlook will feed directly into feasibility discussions that are expected to resume with the Queensland government in the third quarter of this year.

The RAAF Base Townsville and Lavarack Barracks, collectively the largest employer base in the region, operate their own partial water management arrangements but remain connected to the council network for residential and administrative use across the Stuart and Bohle precincts. A sustained drop toward the 50 percent mark would bring those facilities into any formal restriction framework.

Residents wanting to reduce household consumption can request a free water-efficiency audit through Townsville City Council's website or by calling the customer service centre on Macarns Avenue in Hyde Park. Council has also opened a six-week rebate window — closing August 15 — offering up to $200 back on the purchase and installation of a rainwater tank of 2,000 litres or more. Whether the dam recovers before restrictions bite will depend almost entirely on whether a late dry-season trough system pushes meaningful rain into the catchment before October.