Reservoir · Queensland · Australia · BOM Water Data Online
Mary Barrage
133.3% full
Capacity
12 hm³
Volume stored
16 hm³
River
Mary River
Year completed
1983
Coordinates
25.648°S, 152.617°E
Last updated
2026-10-24
Current fill
133.3%vs 7 days ago
+29.9 ppgaining
vs 1 year ago
+29.3 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
128%of normal
133.3% full on 2026-10-24, against an average of 104.3% for October across 4 years of readings (+29.0 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Mary Barrage had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −0.32). Rain, not storage. Australia drought figures →
Data source: Bureau of Meteorology — Water Data Online (KiWIS) — daily mean storage volume, quality-controlled. Capacity from the BOM Water Storages ArcGIS layer (total design capacity in ML). Last reading: 2026-10-24.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 25.648°S, 152.617°E · Open in Google Maps
About Mary Barrage
As of October 24, 2026, Mary Barrage is filled to 133.3% of its total capacity, holding 16 hm³ of water out of a maximum 12 hm³. At this level the reservoir is effectively full. Of that total, 7 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 29.9 percentage points, and it is 29.3 points above its level on the same date a year earlier.
Across the readings we hold for Mary Barrage — 1077 data points between October 28, 2023 and October 24, 2026 — the level has ranged from a low of 90.4% (November 19, 2023) to a high of 149.8% (March 29, 2024). On average the reservoir is fullest around March and at its lowest around November.
The dam at Mary Barrage was completed in 1983. It is operated by BOM primarily for water supply. It lies within the Mary River Basin basin at 25.648°S, 152.617°E.
Key facts
- Current fill level
- 133.3% of total capacity
- Water stored
- 16 hm³
- Total capacity
- 12 hm³
- Usable capacity
- 7 hm³
- 7-day change
- ▲ 29.9 pp
- Year-on-year
- ▲ 29.3 pp
- Primary use
- Water supply
- River
- Mary River
- River basin
- Mary River Basin
- Year completed
- 1983
- Operator
- BOM
- Coordinates
- 25.648°S, 152.617°E
- Last updated
- October 24, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 24 Oct 2026 | 133.3% | 16 |
| 23 Oct 2026 | 115.7% | 13.89 |
| 22 Oct 2026 | 105.2% | 12.62 |
| 21 Oct 2026 | 104.1% | 12.49 |
| 20 Oct 2026 | 104.2% | 12.51 |
| 19 Oct 2026 | 104.2% | 12.5 |
| 18 Oct 2026 | 103.8% | 12.46 |
| 17 Oct 2026 | 103.4% | 12.41 |
| 16 Oct 2026 | 103.4% | 12.41 |
| 15 Oct 2026 | 103.4% | 12.4 |
| 14 Oct 2026 | 103.4% | 12.4 |
| 13 Oct 2026 | 103.1% | 12.37 |