Reservoir · Queensland · Australia · BOM Water Data Online
Kolan Barrage
129.2% full
Capacity
4 hm³
Volume stored
5 hm³
River
Kolan River
Year completed
1973
Coordinates
24.754°S, 152.169°E
Last updated
2026-10-26
Current fill
129.2%vs 7 days ago
+37.7 ppgaining
vs 1 year ago
+37.0 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
140%of normal
129.2% full on 2026-10-26, against an average of 92.3% for October across 4 years of readings (+36.9 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Kolan 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 −0.54). 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. 24.754°S, 152.169°E · Open in Google Maps
About Kolan Barrage
As of October 26, 2026, Kolan Barrage is filled to 129.2% of its total capacity, holding 5.2 hm³ of water out of a maximum 4 hm³. At this level the reservoir is effectively full. Of that total, 2.4 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 37.7 percentage points, and it is 37.0 points above its level on the same date a year earlier.
Across the readings we hold for Kolan Barrage — 1094 data points between October 28, 2023 and October 26, 2026 — the level has ranged from a low of 82.0% (May 11, 2026) to a high of 149.1% (March 29, 2025). On average the reservoir is fullest around April and at its lowest around June.
The dam at Kolan Barrage was completed in 1973. It is operated by BOM primarily for water supply. It lies within the Kolan River Basin basin at 24.754°S, 152.169°E.
Key facts
- Current fill level
- 129.2% of total capacity
- Water stored
- 5.2 hm³
- Total capacity
- 4 hm³
- Usable capacity
- 2.4 hm³
- 7-day change
- ▲ 37.7 pp
- Year-on-year
- ▲ 37.0 pp
- Primary use
- Water supply
- River
- Kolan River
- River basin
- Kolan River Basin
- Year completed
- 1973
- Operator
- BOM
- Coordinates
- 24.754°S, 152.169°E
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 129.2% | 5.2 |
| 25 Oct 2026 | 110.4% | 4.44 |
| 24 Oct 2026 | 100.9% | 4.06 |
| 23 Oct 2026 | 98.1% | 3.94 |
| 22 Oct 2026 | 95.0% | 3.82 |
| 21 Oct 2026 | 94.5% | 3.8 |
| 20 Oct 2026 | 93.7% | 3.77 |
| 19 Oct 2026 | 91.5% | 3.68 |
| 18 Oct 2026 | 90.6% | 3.64 |
| 17 Oct 2026 | 90.1% | 3.62 |
| 16 Oct 2026 | 91.2% | 3.67 |
| 15 Oct 2026 | 90.6% | 3.64 |