Reservoir · Queensland · Australia · BOM Water Data Online
Mirani Weir
61.2% full
Capacity
4.7 hm³
Volume stored
3 hm³
River
Pioneer River
Year completed
1987
Coordinates
21.181°S, 148.826°E
Last updated
2026-10-26
Current fill
61.2%vs 7 days ago
0.0 ppstable
vs 1 year ago
+0.8 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
101%of normal
61.2% full on 2026-10-26, against an average of 60.7% for October across 4 years of readings (+0.5 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Mirani Weir 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: 2026-10-26.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 21.181°S, 148.826°E · Open in Google Maps
About Mirani Weir
As of October 26, 2026, Mirani Weir is filled to 61.2% of its total capacity, holding 2.85 hm³ of water out of a maximum 4.7 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 (+0.0 pp), and it sits close to where it was a year earlier.
Across the readings we hold for Mirani Weir — 1094 data points between October 28, 2023 and October 26, 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 November.
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
- 61.2% of total capacity
- Water stored
- 2.85 hm³
- Total capacity
- 4.7 hm³
- 7-day change
- No change
- Year-on-year
- ▲ 0.8 pp
- 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
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 61.2% | 2.85 |
| 25 Oct 2026 | 61.2% | 2.85 |
| 24 Oct 2026 | 61.2% | 2.85 |
| 23 Oct 2026 | 61.1% | 2.85 |
| 22 Oct 2026 | 61.2% | 2.85 |
| 21 Oct 2026 | 61.3% | 2.86 |
| 20 Oct 2026 | 61.3% | 2.86 |
| 19 Oct 2026 | 61.2% | 2.85 |
| 18 Oct 2026 | 61.3% | 2.86 |
| 17 Oct 2026 | 61.2% | 2.85 |
| 16 Oct 2026 | 61.2% | 2.85 |
| 15 Oct 2026 | 61.1% | 2.85 |