Reservoir · Victoria · Australia · BOM Water Data Online
Upper Coliban
100.5% full
Capacity
37.8 hm³
Volume stored
38 hm³
River
Coliban river
Year completed
1903
Coordinates
37.290°S, 144.401°E
Last updated
2026-09-08
Current fill
100.5%vs 7 days ago
+0.2%gaining
vs 1 year ago
+37.3%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: 2026-09-08.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -37.290, 144.401 · Open in Google Maps
About Upper Coliban
As of September 8, 2026, Upper Coliban is filled to 100.5% of its total capacity, holding roughly 38 hm³ of water out of a maximum 38 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has held broadly steady (+0.2 pts), and it is 37.3 points above its level on the same date a year earlier.
Across the readings we hold for Upper Coliban — 1080 data points between September 11, 2023 and September 8, 2026 — the level has ranged from a low of 45.0% (May 5, 2026) to a high of 102.3% (August 20, 2026). On average the reservoir is fullest around October and at its lowest around May.
The dam at Upper Coliban was completed in 1903. It is operated by BOM primarily for water supply. It lies within the Coliban river Basin basin at 37.290°S, 144.401°E.
Key facts
- Current fill level
- 100.5%
- Water stored
- 38 hm³
- Total capacity
- 38 hm³
- 7-day change
- ▲ 0.2 pts
- Year-on-year
- ▲ 37.3 pts
- Primary use
- Water supply
- River
- Coliban river
- River basin
- Coliban river Basin
- Year completed
- 1903
- Operator
- BOM
- Coordinates
- 37.290°S, 144.401°E
- Last updated
- September 8, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 8 Sep 2026 | 100.5% | 38 |
| 7 Sep 2026 | 100.6% | 38 |
| 6 Sep 2026 | 101.0% | 38 |
| 5 Sep 2026 | 100.8% | 38 |
| 4 Sep 2026 | 100.4% | 38 |
| 3 Sep 2026 | 100.3% | 38 |
| 2 Sep 2026 | 100.3% | 38 |
| 1 Sep 2026 | 100.3% | 38 |
| 31 Aug 2026 | 100.4% | 38 |
| 30 Aug 2026 | 100.4% | 38 |
| 29 Aug 2026 | 100.5% | 38 |
| 28 Aug 2026 | 100.6% | 38 |