Reservoir · Tasmania · Australia · BOM Water Data Online
Lake Gairdner
82.6% full
Capacity
8.8 hm³
Volume stored
7 hm³
Coordinates
41.478°S, 146.069°E
Last updated
2026-07-28
Current fill
82.6%vs 7 days ago
+11.5%gaining
vs 1 year ago
-3.9%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: 2026-07-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -41.478, 146.069 · Open in Google Maps
About Lake Gairdner
As of July 28, 2026, Lake Gairdner is filled to 82.6% of its total capacity, holding roughly 7 hm³ of water out of a maximum 9 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has risen by 11.5 percentage points, and it is 3.9 points below its level on the same date a year earlier.
Across the readings we hold for Lake Gairdner — 1095 data points between July 30, 2023 and July 28, 2026 — the level has ranged from a low of 2.6% (July 19, 2024) to a high of 96.0% (September 2, 2024). On average the reservoir is fullest around September and at its lowest around August.
It is operated by BOM primarily for water supply.
Key facts
- Current fill level
- 82.6%
- Water stored
- 7 hm³
- Total capacity
- 9 hm³
- 7-day change
- ▲ 11.5 pts
- Year-on-year
- ▼ 3.9 pts
- Primary use
- Water supply
- Operator
- BOM
- Coordinates
- 41.478°S, 146.069°E
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 82.6% | 7 |
| 27 Jul 2026 | 71.1% | 6 |
| 26 Jul 2026 | 64.9% | 6 |
| 25 Jul 2026 | 49.7% | 4 |
| 24 Jul 2026 | 23.8% | 2 |
| 23 Jul 2026 | 28.2% | 2 |
| 22 Jul 2026 | 35.1% | 3 |
| 21 Jul 2026 | 45.6% | 4 |
| 20 Jul 2026 | 56.4% | 5 |
| 19 Jul 2026 | 66.1% | 6 |
| 18 Jul 2026 | 74.5% | 7 |
| 17 Jul 2026 | 81.0% | 7 |
Frequently asked questions
What is the current water level of Lake Gairdner?
As of July 28, 2026, Lake Gairdner is at 82.6% of its capacity, holding approximately 7 hm³ of water, according to BOM data.
Is Lake Gairdner reservoir full?
No. As of July 28, 2026, Lake Gairdner is high at 82.6% of its capacity, so it is not full.
Is the water level at Lake Gairdner rising or falling?
The level at Lake Gairdner is rising — it gained 11.5 percentage points over the latest week on record.
How much water can Lake Gairdner hold?
Lake Gairdner has a total capacity of 9 hm³.
Where is Lake Gairdner reservoir located?
Lake Gairdner is located in Tasmania, Australia (coordinates 41.478°S, 146.069°E).
What is Lake Gairdner used for?
Lake Gairdner is used primarily for water supply, and is managed by BOM.