Reservoir · Victoria · Australia · BOM Water Data Online
Malmsbury
106.4% full
Capacity
12 hm³
Volume stored
13 hm³
River
Coliban river
Year completed
1874
Coordinates
37.213°S, 144.371°E
Last updated
2026-09-08
Current fill
106.4%vs 7 days ago
+3.5%gaining
vs 1 year ago
+87.3%year-over-year
7-day trend
↑rising
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. -37.213, 144.371 · Open in Google Maps
About Malmsbury
As of September 8, 2026, Malmsbury is filled to 106.4% of its total capacity, holding roughly 13 hm³ of water out of a maximum 12 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has risen by 3.5 percentage points, and it is 87.3 points above its level on the same date a year earlier.
Across the readings we hold for Malmsbury — 1079 data points between September 11, 2023 and September 8, 2026 — the level has ranged from a low of 12.3% (April 23, 2025) to a high of 114.2% (August 11, 2026). On average the reservoir is fullest around October and at its lowest around May.
The dam at Malmsbury was completed in 1874. It is operated by BOM primarily for water supply. It lies within the Coliban river Basin basin at 37.213°S, 144.371°E.
Key facts
- Current fill level
- 106.4%
- Water stored
- 13 hm³
- Total capacity
- 12 hm³
- 7-day change
- ▲ 3.5 pts
- Year-on-year
- ▲ 87.3 pts
- Primary use
- Water supply
- River
- Coliban river
- River basin
- Coliban river Basin
- Year completed
- 1874
- Operator
- BOM
- Coordinates
- 37.213°S, 144.371°E
- Last updated
- September 8, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 8 Sep 2026 | 106.4% | 13 |
| 7 Sep 2026 | 106.7% | 13 |
| 6 Sep 2026 | 106.0% | 13 |
| 5 Sep 2026 | 104.0% | 13 |
| 4 Sep 2026 | 102.8% | 12 |
| 3 Sep 2026 | 102.6% | 12 |
| 2 Sep 2026 | 102.6% | 12 |
| 1 Sep 2026 | 102.9% | 12 |
| 31 Aug 2026 | 103.3% | 12 |
| 30 Aug 2026 | 103.9% | 13 |
| 29 Aug 2026 | 104.6% | 13 |
| 28 Aug 2026 | 105.7% | 13 |