As of July 27, 2026, the reservoirs we track across Western Australia that report live levels hold roughly 11,292 hm³ of water — about 95.5% of their combined capacity. Taken together, Western Australia's reservoirs are high.

Across the region, 2 reservoirs are at critically low levels and 4 are low. Argyle (Ord River) is the fullest at 100.8%, while Harris is the lowest at 15.5%.

Storage figures for Western Australia come from BOM; the most recent reading is from July 27, 2026. Each reservoir below links to its own page with full history and seasonal context.

Western Australia at a glance

Reservoirs tracked: 25
Average fill: 95.5%
Water stored: 11,292 hm³
Combined capacity: 11,929 hm³
At critically low levels: 2
Fullest: Argyle (Ord River) (100.8%)
Lowest: Harris (15.5%)
Last updated: July 27, 2026

Frequently asked questions

How full are reservoirs in Western Australia right now?

As of July 27, 2026, the reservoirs tracked in Western Australia that report live levels are 95.5% full overall, holding about 11,292 hm³ of water.

How many reservoirs are there in Western Australia?

reservoirs.earth tracks 25 reservoirs in Western Australia, with a combined storage capacity of 11,929 hm³.

Which reservoir in Western Australia is the fullest?

Argyle (Ord River) is currently the fullest reservoir in Western Australia, at 100.8% of capacity.

Which reservoir in Western Australia is the lowest?

Harris is currently the lowest in Western Australia, at 15.5% of capacity.

Where does the reservoir data for Western Australia come from?

All storage figures for Western Australia come from BOM, an official source, last updated July 27, 2026.

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