Reservoir · Victoria · Australia · BOM Water Data Online
Malmsbury
95.2% full
Capacity
12 hm³
Volume stored
11 hm³
River
Coliban river
Year completed
1874
Coordinates
37.213°S, 144.371°E
Last updated
2026-10-26
Current fill
95.2%vs 7 days ago
-2.3 pplosing
vs 1 year ago
+63.4 ppyear-over-year
7-day trend
↓falling
Drought context
Storage vs October average
162%of normal
95.2% full on 2026-10-26, against an average of 58.6% for October across 4 years of readings (+36.6 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Malmsbury 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 +0.27). 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. 37.213°S, 144.371°E · Open in Google Maps
About Malmsbury
As of October 26, 2026, Malmsbury is filled to 95.2% of its total capacity, holding 11.46 hm³ of water out of a maximum 12 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has fallen by 2.3 percentage points, and it is 63.4 points above its level on the same date a year earlier.
Across the readings we hold for Malmsbury — 1079 data points between October 29, 2023 and October 26, 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
- 95.2% of total capacity
- Water stored
- 11.46 hm³
- Total capacity
- 12 hm³
- 7-day change
- ▼ 2.3 pp
- Year-on-year
- ▲ 63.4 pp
- 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
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 95.2% | 11.46 |
| 25 Oct 2026 | 95.0% | 11.44 |
| 24 Oct 2026 | 94.8% | 11.41 |
| 23 Oct 2026 | 95.1% | 11.45 |
| 22 Oct 2026 | 95.9% | 11.55 |
| 21 Oct 2026 | 96.7% | 11.64 |
| 20 Oct 2026 | 97.2% | 11.7 |
| 19 Oct 2026 | 97.5% | 11.74 |
| 18 Oct 2026 | 97.8% | 11.76 |
| 17 Oct 2026 | 97.8% | 11.76 |
| 16 Oct 2026 | 97.6% | 11.75 |
| 15 Oct 2026 | 97.5% | 11.74 |