Reservoir · Queensland · Australia · BOM Water Data Online
Mary Barrage
105.9% full
Capacity
12 hm³
Volume stored
13 hm³
River
Mary River
Year completed
1983
Coordinates
25.648°S, 152.617°E
Last updated
2026-06-10
Current fill
105.9%vs 7 days ago
-0.1%losing
vs 1 year ago
-0.8%year-over-year
7-day trend
→stable
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: 2026-06-10.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -25.648, 152.617 · Open in Google Maps
About Mary Barrage
As of June 10, 2026, Mary Barrage is filled to 105.9% of its total capacity, holding roughly 13 hm³ of water out of a maximum 12 hm³. At this level the reservoir is effectively full. Of that total, about 7 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-0.1 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Mary Barrage — 1079 data points between June 12, 2023 and June 10, 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
- 105.9%
- Water stored
- 13 hm³
- Total capacity
- 12 hm³
- Usable capacity
- 7 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▼ 0.8 pts
- 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
- June 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Jun 2026 | 105.9% | 13 |
| 9 Jun 2026 | 106.0% | 13 |
| 8 Jun 2026 | 106.2% | 13 |
| 7 Jun 2026 | 106.4% | 13 |
| 6 Jun 2026 | 106.6% | 13 |
| 5 Jun 2026 | 106.9% | 13 |
| 4 Jun 2026 | 107.2% | 13 |
| 3 Jun 2026 | 107.7% | 13 |
| 2 Jun 2026 | 108.2% | 13 |
| 1 Jun 2026 | 108.6% | 13 |
| 31 May 2026 | 107.4% | 13 |
| 30 May 2026 | 106.5% | 13 |
Frequently asked questions
What is the current water level of Mary Barrage?
As of June 10, 2026, Mary Barrage is at 105.9% of its capacity, holding approximately 13 hm³ of water, according to BOM data.
Is Mary Barrage reservoir full?
Mary Barrage is essentially full, sitting at 105.9% of capacity as of June 10, 2026.
Is the water level at Mary Barrage rising or falling?
The level at Mary Barrage has been broadly stable over the latest week on record (-0.1 points).
How much water can Mary Barrage hold?
Mary Barrage has a total capacity of 12 hm³, of which about 7 hm³ is usable storage.
Where is Mary Barrage reservoir located?
Mary Barrage is located in Queensland, Australia, within the Mary River Basin basin (coordinates 25.648°S, 152.617°E).
When was Mary Barrage dam built?
The dam at Mary Barrage was completed in 1983.
What is Mary Barrage used for?
Mary Barrage is used primarily for water supply, and is managed by BOM.