Reservoir · Queensland · Australia · BOM Water Data Online
Mirani Weir
61.7% full
Capacity
4.7 hm³
Volume stored
3 hm³
River
Pioneer River
Year completed
1987
Coordinates
21.181°S, 148.826°E
Last updated
2026-09-09
Current fill
61.7%vs 7 days ago
-0.1%losing
vs 1 year ago
+1.1%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: 2026-09-09.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -21.181, 148.826 · Open in Google Maps
About Mirani Weir
As of September 9, 2026, Mirani Weir is filled to 61.7% of its total capacity, holding roughly 3 hm³ of water out of a maximum 5 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (-0.1 pts), and it is 1.1 points above its level on the same date a year earlier.
Across the readings we hold for Mirani Weir — 1094 data points between September 11, 2023 and September 9, 2026 — the level has ranged from a low of 59.6% (November 15, 2023) to a high of 132.2% (January 11, 2026). On average the reservoir is fullest around February and at its lowest around October.
The dam at Mirani Weir was completed in 1987. It is operated by BOM primarily for water supply. It lies within the Pioneer River Basin basin at 21.181°S, 148.826°E.
Key facts
- Current fill level
- 61.7%
- Water stored
- 3 hm³
- Total capacity
- 5 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▲ 1.1 pts
- Primary use
- Water supply
- River
- Pioneer River
- River basin
- Pioneer River Basin
- Year completed
- 1987
- Operator
- BOM
- Coordinates
- 21.181°S, 148.826°E
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 61.7% | 3 |
| 8 Sep 2026 | 61.8% | 3 |
| 7 Sep 2026 | 61.8% | 3 |
| 6 Sep 2026 | 61.8% | 3 |
| 5 Sep 2026 | 61.7% | 3 |
| 4 Sep 2026 | 61.8% | 3 |
| 3 Sep 2026 | 61.7% | 3 |
| 2 Sep 2026 | 61.8% | 3 |
| 1 Sep 2026 | 61.6% | 3 |
| 31 Aug 2026 | 61.6% | 3 |
| 30 Aug 2026 | 61.6% | 3 |
| 29 Aug 2026 | 61.6% | 3 |