Reservoir · Tasmania · Australia · BOM Water Data Online
Lake Rosebery
39.9% full
Capacity
123.5 hm³
Volume stored
49 hm³
Year completed
1983
Coordinates
41.763°S, 145.623°E
Last updated
2026-09-07
Current fill
39.9%vs 7 days ago
+1.9%gaining
vs 1 year ago
+0.4%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: 2026-09-07.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -41.763, 145.623 · Open in Google Maps
About Lake Rosebery
As of September 7, 2026, Lake Rosebery is filled to 39.9% of its total capacity, holding roughly 49 hm³ of water out of a maximum 124 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has risen by 1.9 percentage points, and it sits close to where it was a year earlier.
Across the readings we hold for Lake Rosebery — 1093 data points between September 11, 2023 and September 7, 2026 — the level has ranged from a low of 23.2% (April 29, 2025) to a high of 49.1% (August 30, 2024). On average the reservoir is fullest around September and at its lowest around May.
The dam at Lake Rosebery was completed in 1983. It is operated by BOM primarily for water supply.
Key facts
- Current fill level
- 39.9%
- Water stored
- 49 hm³
- Total capacity
- 124 hm³
- 7-day change
- ▲ 1.9 pts
- Year-on-year
- ▲ 0.4 pts
- Primary use
- Water supply
- Year completed
- 1983
- Operator
- BOM
- Coordinates
- 41.763°S, 145.623°E
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Sep 2026 | 39.9% | 49 |
| 6 Sep 2026 | 40.0% | 49 |
| 5 Sep 2026 | 40.3% | 50 |
| 4 Sep 2026 | 40.2% | 50 |
| 3 Sep 2026 | 39.1% | 48 |
| 2 Sep 2026 | 39.0% | 48 |
| 1 Sep 2026 | 38.6% | 48 |
| 31 Aug 2026 | 38.0% | 47 |
| 30 Aug 2026 | 36.6% | 45 |
| 29 Aug 2026 | 39.5% | 49 |
| 28 Aug 2026 | 39.4% | 49 |
| 27 Aug 2026 | 39.4% | 49 |