Reservoir · Victoria · Australia · BOM Water Data Online
Lake Lonsdale
29.5% full
Capacity
53.3 hm³
Volume stored
16 hm³
River
Mt William Creek
Year completed
1903
Coordinates
37.029°S, 142.628°E
Last updated
2026-07-29
Current fill
29.5%vs 7 days ago
0.0%stable
vs 1 year ago
+16.6%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: 2026-07-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -37.029, 142.628 · Open in Google Maps
About Lake Lonsdale
As of July 29, 2026, Lake Lonsdale is filled to 29.5% of its total capacity, holding roughly 16 hm³ of water out of a maximum 53 hm³. At this level the reservoir is low. Of that total, about 51 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it is 16.6 points above its level on the same date a year earlier.
Across the readings we hold for Lake Lonsdale — 1096 data points between July 30, 2023 and July 29, 2026 — the level has ranged from a low of 11.1% (May 7, 2026) to a high of 100.7% (September 13, 2023). On average the reservoir is fullest around September 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
- 29.5%
- Water stored
- 16 hm³
- Total capacity
- 53 hm³
- Usable capacity
- 51 hm³
- 7-day change
- No change
- Year-on-year
- ▲ 16.6 pts
- 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
- July 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Jul 2026 | 29.5% | 16 |
| 28 Jul 2026 | 29.5% | 16 |
| 27 Jul 2026 | 29.7% | 16 |
| 26 Jul 2026 | 29.5% | 16 |
| 25 Jul 2026 | 29.4% | 16 |
| 24 Jul 2026 | 29.3% | 16 |
| 23 Jul 2026 | 29.3% | 16 |
| 22 Jul 2026 | 29.3% | 16 |
| 21 Jul 2026 | 29.3% | 16 |
| 20 Jul 2026 | 29.2% | 16 |
| 19 Jul 2026 | 29.0% | 15 |
| 18 Jul 2026 | 28.9% | 15 |
Frequently asked questions
What is the current water level of Lake Lonsdale?
As of July 29, 2026, Lake Lonsdale is at 29.5% of its capacity, holding approximately 16 hm³ of water, according to BOM data.
Is Lake Lonsdale reservoir full?
No. As of July 29, 2026, Lake Lonsdale is low at 29.5% of its capacity, so it is not full.
Is the water level at Lake Lonsdale rising or falling?
The level at Lake Lonsdale has been broadly stable over the latest week on record (0.0 points).
How much water can Lake Lonsdale hold?
Lake Lonsdale has a total capacity of 53 hm³, of which about 51 hm³ is usable storage.
Where is Lake Lonsdale reservoir located?
Lake Lonsdale is located in Victoria, Australia, within the Mt William Creek Basin basin (coordinates 37.029°S, 142.628°E).
When was Lake Lonsdale dam built?
The dam at Lake Lonsdale was completed in 1903.
What is Lake Lonsdale used for?
Lake Lonsdale is used primarily for water supply, and is managed by BOM.