Reservoir · Tasmania · Australia · BOM Water Data Online
Lake Augusta
4.8% full
Capacity
23.5 hm³
Volume stored
1 hm³
River
Ouse River
Year completed
1953
Coordinates
41.854°S, 146.531°E
Last updated
2026-09-07
Current fill
4.8%vs 7 days ago
-1.8%losing
vs 1 year ago
0.0%year-over-year
7-day trend
↓falling
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. -41.854, 146.531 · Open in Google Maps
About Lake Augusta
As of September 7, 2026, Lake Augusta is filled to 4.8% of its total capacity, holding roughly 1 hm³ of water out of a maximum 24 hm³. At this level the reservoir is critically low. Of that total, about 21 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 1.8 percentage points, and it sits close to where it was a year earlier.
Across the readings we hold for Lake Augusta — 1093 data points between September 11, 2023 and September 7, 2026 — the level has ranged from a low of 3.4% (February 2, 2026) to a high of 99.3% (September 2, 2024). On average the reservoir is fullest around September and at its lowest around February.
The dam at Lake Augusta was completed in 1953. It is operated by BOM primarily for water supply. It lies within the Ouse River Basin basin at 41.854°S, 146.531°E.
Key facts
- Current fill level
- 4.8%
- Water stored
- 1 hm³
- Total capacity
- 24 hm³
- Usable capacity
- 21 hm³
- 7-day change
- ▼ 1.8 pts
- Year-on-year
- No change
- Primary use
- Water supply
- River
- Ouse River
- River basin
- Ouse River Basin
- Year completed
- 1953
- Operator
- BOM
- Coordinates
- 41.854°S, 146.531°E
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Sep 2026 | 4.8% | 1 |
| 6 Sep 2026 | 4.8% | 1 |
| 5 Sep 2026 | 4.2% | 1 |
| 4 Sep 2026 | 4.7% | 1 |
| 3 Sep 2026 | 5.0% | 1 |
| 2 Sep 2026 | 4.6% | 1 |
| 1 Sep 2026 | 4.6% | 1 |
| 31 Aug 2026 | 6.6% | 2 |
| 30 Aug 2026 | 10.3% | 2 |
| 29 Aug 2026 | 15.2% | 4 |
| 28 Aug 2026 | 23.4% | 6 |
| 27 Aug 2026 | 30.9% | 7 |