Reservoir · Victoria · Australia · BOM Water Data Online
Lake Lonsdale
63.1% full
Capacity
53.3 hm³
Volume stored
34 hm³
River
Mt William Creek
Year completed
1903
Coordinates
37.029°S, 142.628°E
Last updated
2026-10-27
Current fill
63.1%vs 7 days ago
+0.6 ppgaining
vs 1 year ago
+35.8 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
131%of normal
63.1% full on 2026-10-27, against an average of 48.2% for October across 4 years of readings (+14.9 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Lake Lonsdale 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 +0.04). 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: 2026-10-27.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 37.029°S, 142.628°E · Open in Google Maps
About Lake Lonsdale
As of October 27, 2026, Lake Lonsdale is filled to 63.1% of its total capacity, holding 33.62 hm³ of water out of a maximum 53.3 hm³. At this level the reservoir is within its normal operating range. Of that total, 51.3 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.6 pp), and it is 35.8 points above its level on the same date a year earlier.
Across the readings we hold for Lake Lonsdale — 1096 data points between October 28, 2023 and October 27, 2026 — the level has ranged from a low of 11.1% (May 7, 2026) to a high of 94.1% (October 28, 2023). On average the reservoir is fullest around November and at its lowest around May.
The dam at Lake Lonsdale was completed in 1903. It is operated by BOM primarily for water supply. It lies within the Mt William Creek Basin basin at 37.029°S, 142.628°E.
Key facts
- Current fill level
- 63.1% of total capacity
- Water stored
- 33.62 hm³
- Total capacity
- 53.3 hm³
- Usable capacity
- 51.3 hm³
- 7-day change
- ▲ 0.6 pp
- Year-on-year
- ▲ 35.8 pp
- Primary use
- Water supply
- River
- Mt William Creek
- River basin
- Mt William Creek Basin
- Year completed
- 1903
- Operator
- BOM
- Coordinates
- 37.029°S, 142.628°E
- Last updated
- October 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Oct 2026 | 63.1% | 33.62 |
| 26 Oct 2026 | 63.2% | 33.67 |
| 25 Oct 2026 | 63.1% | 33.63 |
| 24 Oct 2026 | 62.7% | 33.43 |
| 23 Oct 2026 | 62.6% | 33.38 |
| 22 Oct 2026 | 62.7% | 33.42 |
| 21 Oct 2026 | 62.6% | 33.35 |
| 20 Oct 2026 | 62.5% | 33.3 |
| 19 Oct 2026 | 62.6% | 33.38 |
| 18 Oct 2026 | 62.7% | 33.42 |
| 17 Oct 2026 | 62.7% | 33.44 |
| 16 Oct 2026 | 62.8% | 33.46 |