Reservoir · Queensland · Australia · BOM Water Data Online
Kolan Barrage
88.8% full
Capacity
4 hm³
Volume stored
4 hm³
River
Kolan River
Year completed
1973
Coordinates
24.754°S, 152.169°E
Last updated
2026-07-28
Current fill
88.8%vs 7 days ago
+0.9%gaining
vs 1 year ago
-3.2%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: 2026-07-28.
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 July 28, 2026, Kolan Barrage is filled to 88.8% 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 (+0.9 pts), and it is 3.2 points below its level on the same date a year earlier.
Across the readings we hold for Kolan Barrage — 1094 data points between July 30, 2023 and July 28, 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
- 88.8%
- Water stored
- 4 hm³
- Total capacity
- 4 hm³
- Usable capacity
- 2 hm³
- 7-day change
- ▲ 0.9 pts
- Year-on-year
- ▼ 3.2 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
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 88.8% | 4 |
| 27 Jul 2026 | 87.9% | 4 |
| 26 Jul 2026 | 89.8% | 4 |
| 25 Jul 2026 | 90.7% | 4 |
| 24 Jul 2026 | 90.0% | 4 |
| 23 Jul 2026 | 91.8% | 4 |
| 22 Jul 2026 | 94.6% | 4 |
| 21 Jul 2026 | 94.3% | 4 |
| 20 Jul 2026 | 93.2% | 4 |
| 19 Jul 2026 | 92.2% | 4 |
| 18 Jul 2026 | 92.7% | 4 |
| 17 Jul 2026 | 94.8% | 4 |
Frequently asked questions
What is the current water level of Kolan Barrage?
As of July 28, 2026, Kolan Barrage is at 88.8% of its capacity, holding approximately 4 hm³ of water, according to BOM data.
Is Kolan Barrage reservoir full?
No. As of July 28, 2026, Kolan Barrage is high at 88.8% of its capacity, so it is not full.
Is the water level at Kolan Barrage rising or falling?
The level at Kolan Barrage has been broadly stable over the latest week on record (+0.9 points).
How much water can Kolan Barrage hold?
Kolan Barrage has a total capacity of 4 hm³, of which about 2 hm³ is usable storage.
Where is Kolan Barrage reservoir located?
Kolan Barrage is located in Queensland, Australia, within the Kolan River Basin basin (coordinates 24.754°S, 152.169°E).
When was Kolan Barrage dam built?
The dam at Kolan Barrage was completed in 1973.
What is Kolan Barrage used for?
Kolan Barrage is used primarily for water supply, and is managed by BOM.