Reservoir · Queensland · Australia · BOM Water Data Online
Kolan Barrage
89.5% full
Capacity
4 hm³
Volume stored
4 hm³
River
Kolan River
Year completed
1973
Coordinates
24.754°S, 152.169°E
Last updated
2026-09-09
Current fill
89.5%vs 7 days ago
-0.1%losing
vs 1 year ago
+3.7%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. -24.754, 152.169 · Open in Google Maps
About Kolan Barrage
As of September 9, 2026, Kolan Barrage is filled to 89.5% of its total capacity, holding roughly 4 hm³ of water out of a maximum 4 hm³. At this level the reservoir is high. Of that total, about 2 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-0.1 pts), and it is 3.7 points above its level on the same date a year earlier.
Across the readings we hold for Kolan Barrage — 1094 data points between September 11, 2023 and September 9, 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 October.
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
- 89.5%
- Water stored
- 4 hm³
- Total capacity
- 4 hm³
- Usable capacity
- 2 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▲ 3.7 pts
- 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
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 89.5% | 4 |
| 8 Sep 2026 | 87.9% | 4 |
| 7 Sep 2026 | 86.3% | 3 |
| 6 Sep 2026 | 85.6% | 3 |
| 5 Sep 2026 | 87.7% | 4 |
| 4 Sep 2026 | 88.2% | 4 |
| 3 Sep 2026 | 87.5% | 4 |
| 2 Sep 2026 | 89.6% | 4 |
| 1 Sep 2026 | 91.1% | 4 |
| 31 Aug 2026 | 89.9% | 4 |
| 30 Aug 2026 | 88.3% | 4 |
| 29 Aug 2026 | 89.6% | 4 |