Reservoir · Tasmania · Australia · BOM Water Data Online
Lake Gairdner
4.9% full
Capacity
8.8 hm³
Volume stored
0 hm³
Coordinates
41.478°S, 146.069°E
Last updated
2026-10-25
Current fill
4.9%vs 7 days ago
-15.9 pplosing
vs 1 year ago
-79.9 ppyear-over-year
7-day trend
↓falling
Drought context
Storage vs October average
9%of normal
4.9% full on 2026-10-25, against an average of 55.9% for October across 4 years of readings (-51.0 points).
Rain over the last three months · 11 October 2026
Moderately dry
In the three months to 11 October 2026 the area around Lake Gairdner had well below normal rain, a shortfall seen about one year in six. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −1.26). Rain, not storage. Australia drought figures →
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: 2026-10-25.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 41.478°S, 146.069°E · Open in Google Maps
About Lake Gairdner
As of October 25, 2026, Lake Gairdner is filled to 4.9% of its total capacity, holding 0.44 hm³ of water out of a maximum 8.8 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has fallen by 15.9 percentage points, and it is 79.9 points below its level on the same date a year earlier.
Across the readings we hold for Lake Gairdner — 1094 data points between October 28, 2023 and October 25, 2026 — the level has ranged from a low of 1.7% (September 1, 2026) to a high of 96.0% (September 2, 2024). On average the reservoir is fullest around December and at its lowest around August.
It is operated by BOM primarily for water supply. It is at 41.478°S, 146.069°E.
Key facts
- Current fill level
- 4.9% of total capacity
- Water stored
- 0.44 hm³
- Total capacity
- 8.8 hm³
- 7-day change
- ▼ 15.9 pp
- Year-on-year
- ▼ 79.9 pp
- Primary use
- Water supply
- Operator
- BOM
- Coordinates
- 41.478°S, 146.069°E
- Last updated
- October 25, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 25 Oct 2026 | 4.9% | 0.44 |
| 24 Oct 2026 | 3.4% | 0.3 |
| 23 Oct 2026 | 10.1% | 0.89 |
| 22 Oct 2026 | 11.6% | 1.03 |
| 21 Oct 2026 | 14.4% | 1.27 |
| 20 Oct 2026 | 17.5% | 1.55 |
| 19 Oct 2026 | 20.0% | 1.76 |
| 18 Oct 2026 | 20.8% | 1.83 |
| 17 Oct 2026 | 17.6% | 1.56 |
| 16 Oct 2026 | 16.1% | 1.42 |
| 15 Oct 2026 | 19.7% | 1.74 |
| 14 Oct 2026 | 27.0% | 2.38 |