Australia9 states & territories · BOM official data

Reservoir Watch

Official storage levels across 281 reservoirs in 9 states and territories. Data from the Bureau of Meteorology.

Average fill

63.5%

Total volume

53.9 km³

Reservoirs

281

Critical

Low level

Australia at a glance

National average fill

63.5%

53,937 of 87,181 hm³ stored

Reservoirs

281

States/territories

Total capacity

87.2 km³

Volume stored

53.9 km³

Critical

Low level

Coverage: Bureau of Meteorology Water Data Online — publicly-owned storages reported under Australia's Water Regulations 2008. Last reading: 2026-09-10.

National fill — multi-year

By state & territory

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By state & territory

Sorted by capacity

Tasmania

40 reservoirs

Low

Average fill

39.1%

10,055 hm³ storedTAS

New South Wales

59 reservoirs

Average fill

61.4%

13,667 hm³ storedNSW

Western Australia

25 reservoirs

Average fill

92.3%

10,924 hm³ storedWA

Victoria

62 reservoirs

Average fill

70.1%

7,950 hm³ storedVIC

Queensland

71 reservoirs

Average fill

74.6%

7,662 hm³ storedQLD

New South Wales and Victoria

3 reservoirs

Average fill

82.3%

2,633 hm³ stored

South Australia

17 reservoirs

Average fill

95.4%

2,229 hm³ storedSA

Northern Territory

1 reservoir

Average fill

86.2%

261 hm³ storedNT

Australian Capital Territory

3 reservoirs

Average fill

89.0%

144 hm³ storedACT

All reservoirs

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Dataset coverage

85%of national storage capacity has public data

Tracked

281

reservoirs

With data

281

reservoirs

Tracked capacity

87,181

hm³

Source: State water authorities — BOM · WaterNSW · Melbourne Water · SA Water · DEWS Queensland · Seqwater · Water Corporation WA

Covers reservoirs monitored by state water authorities across all territories. Data is aggregated from individual state portals.

About reservoirs in Australia

As of September 10, 2026, the reservoirs we track across Australia that report live levels hold roughly 53,937 hm³ of water — about 63.5% of their combined capacity. Taken together, Australia's reservoirs are within their normal operating range.

Across the region, 18 reservoirs are at critically low levels and 23 are low. Maude Weir is the fullest at 139.7%, while Dee Lagoon is the lowest at 0.7%.

Over the most recent week on record, 51 reservoirs rose and 33 reservoirs fell across Australia.

Storage figures for Australia come from BOM; the most recent reading is from September 10, 2026. Each reservoir below links to its own page with full history and seasonal context.

Australia at a glance

Reservoirs tracked: 281
Average fill: 63.5%
Water stored: 53,937 hm³
Combined capacity: 87,181 hm³
At critically low levels: 18
Fullest: Maude Weir (139.7%)
Lowest: Dee Lagoon (0.7%)
Last updated: September 10, 2026