Reservoir · Tasmania · Australia · BOM Water Data Online
Lake Rosebery
40.4% full
Capacity
123.5 hm³
Volume stored
50 hm³
Year completed
1983
Coordinates
41.763°S, 145.623°E
Last updated
2026-07-27
Current fill
40.4%vs 7 days ago
+0.2%gaining
vs 1 year ago
+3.0%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: 2026-07-27.
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 July 27, 2026, Lake Rosebery is filled to 40.4% of its total capacity, holding roughly 50 hm³ of water out of a maximum 124 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (+0.2 pts), and it is 3.0 points above its level on the same date a year earlier.
Across the readings we hold for Lake Rosebery — 1094 data points between July 30, 2023 and July 27, 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
- 40.4%
- Water stored
- 50 hm³
- Total capacity
- 124 hm³
- 7-day change
- ▲ 0.2 pts
- Year-on-year
- ▲ 3.0 pts
- Primary use
- Water supply
- Year completed
- 1983
- Operator
- BOM
- Coordinates
- 41.763°S, 145.623°E
- Last updated
- July 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Jul 2026 | 40.4% | 50 |
| 26 Jul 2026 | 40.2% | 50 |
| 25 Jul 2026 | 40.5% | 50 |
| 24 Jul 2026 | 39.7% | 49 |
| 23 Jul 2026 | 38.6% | 48 |
| 22 Jul 2026 | 38.2% | 47 |
| 21 Jul 2026 | 38.2% | 47 |
| 20 Jul 2026 | 38.4% | 47 |
| 19 Jul 2026 | 38.6% | 48 |
| 18 Jul 2026 | 38.7% | 48 |
| 17 Jul 2026 | 38.8% | 48 |
| 16 Jul 2026 | 38.8% | 48 |
Frequently asked questions
What is the current water level of Lake Rosebery?
As of July 27, 2026, Lake Rosebery is at 40.4% of its capacity, holding approximately 50 hm³ of water, according to BOM data.
Is Lake Rosebery reservoir full?
No. As of July 27, 2026, Lake Rosebery is within its normal operating range at 40.4% of its capacity, so it is not full.
Is the water level at Lake Rosebery rising or falling?
The level at Lake Rosebery has been broadly stable over the latest week on record (+0.2 points).
How much water can Lake Rosebery hold?
Lake Rosebery has a total capacity of 124 hm³.
Where is Lake Rosebery reservoir located?
Lake Rosebery is located in Tasmania, Australia (coordinates 41.763°S, 145.623°E).
When was Lake Rosebery dam built?
The dam at Lake Rosebery was completed in 1983.
What is Lake Rosebery used for?
Lake Rosebery is used primarily for water supply, and is managed by BOM.