Reservoir · Tasmania · Australia · BOM Water Data Online
Lake St Clair
0.7% full
Capacity
2,000 hm³
Volume stored
14 hm³
River
Derwent River
Year completed
1968
Coordinates
42.068°S, 146.168°E
Last updated
2026-06-10
Current fill
0.7%vs 7 days ago
0.0%stable
vs 1 year ago
-0.5%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: 2026-06-10.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -42.068, 146.168 · Open in Google Maps
About Lake St Clair
As of June 10, 2026, Lake St Clair is filled to 0.7% of its total capacity, holding roughly 14 hm³ of water out of a maximum 2,000 hm³. At this level the reservoir is critically low. Of that total, about 206 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Lake St Clair — 1095 data points between June 12, 2023 and June 10, 2026 — the level has ranged from a low of 0.1% (March 1, 2025) to a high of 2.4% (September 2, 2024). On average the reservoir is fullest around September and at its lowest around March.
The dam at Lake St Clair was completed in 1968. It is operated by BOM primarily for water supply. It lies within the Derwent River Basin basin at 42.068°S, 146.168°E.
Key facts
- Current fill level
- 0.7%
- Water stored
- 14 hm³
- Total capacity
- 2,000 hm³
- Usable capacity
- 206 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 0.5 pts
- Primary use
- Water supply
- River
- Derwent River
- River basin
- Derwent River Basin
- Year completed
- 1968
- Operator
- BOM
- Coordinates
- 42.068°S, 146.168°E
- Last updated
- June 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Jun 2026 | 0.7% | 14 |
| 9 Jun 2026 | 0.7% | 14 |
| 8 Jun 2026 | 0.7% | 14 |
| 7 Jun 2026 | 0.7% | 14 |
| 6 Jun 2026 | 0.7% | 14 |
| 5 Jun 2026 | 0.7% | 14 |
| 4 Jun 2026 | 0.7% | 14 |
| 3 Jun 2026 | 0.7% | 14 |
| 2 Jun 2026 | 0.7% | 14 |
| 1 Jun 2026 | 0.6% | 13 |
| 31 May 2026 | 0.5% | 10 |
| 30 May 2026 | 0.5% | 10 |
Frequently asked questions
What is the current water level of Lake St Clair?
As of June 10, 2026, Lake St Clair is at 0.7% of its capacity, holding approximately 14 hm³ of water, according to BOM data.
Is Lake St Clair reservoir full?
No. As of June 10, 2026, Lake St Clair is critically low at 0.7% of its capacity, so it is not full.
Is the water level at Lake St Clair rising or falling?
The level at Lake St Clair has been broadly stable over the latest week on record (0.0 points).
How much water can Lake St Clair hold?
Lake St Clair has a total capacity of 2,000 hm³, of which about 206 hm³ is usable storage.
Where is Lake St Clair reservoir located?
Lake St Clair is located in Tasmania, Australia, within the Derwent River Basin basin (coordinates 42.068°S, 146.168°E).
When was Lake St Clair dam built?
The dam at Lake St Clair was completed in 1968.
What is Lake St Clair used for?
Lake St Clair is used primarily for water supply, and is managed by BOM.