Reservoir · Tasmania · Australia · BOM Water Data Online
Lake Augusta
16.0% full
Capacity
23.5 hm³
Volume stored
4 hm³
River
Ouse River
Year completed
1953
Coordinates
41.854°S, 146.531°E
Last updated
2026-10-26
Current fill
16.0%vs 7 days ago
+1.7 ppgaining
vs 1 year ago
-3.4 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
67%of normal
16.0% full on 2026-10-26, against an average of 23.9% for October across 4 years of readings (-7.9 points).
Rain over the last three months · 11 October 2026
Severely dry
In the three months to 11 October 2026 the area around Lake Augusta had far less rain than normal, a shortfall seen about one year in fifteen. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −1.86). 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: 2026-10-26.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 41.854°S, 146.531°E · Open in Google Maps
About Lake Augusta
As of October 26, 2026, Lake Augusta is filled to 16.0% of its total capacity, holding 3.76 hm³ of water out of a maximum 23.5 hm³. At this level the reservoir is critically low. Of that total, 21.1 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 1.7 percentage points, and it is 3.4 points below its level on the same date a year earlier.
Across the readings we hold for Lake Augusta — 1095 data points between October 28, 2023 and October 26, 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
- 16.0% of total capacity
- Water stored
- 3.76 hm³
- Total capacity
- 23.5 hm³
- Usable capacity
- 21.1 hm³
- 7-day change
- ▲ 1.7 pp
- Year-on-year
- ▼ 3.4 pp
- 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
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 16.0% | 3.76 |
| 25 Oct 2026 | 15.9% | 3.74 |
| 24 Oct 2026 | 15.8% | 3.71 |
| 23 Oct 2026 | 15.6% | 3.66 |
| 22 Oct 2026 | 14.9% | 3.5 |
| 21 Oct 2026 | 14.2% | 3.34 |
| 20 Oct 2026 | 14.2% | 3.32 |
| 19 Oct 2026 | 14.3% | 3.36 |
| 18 Oct 2026 | 14.3% | 3.36 |
| 17 Oct 2026 | 14.6% | 3.43 |
| 16 Oct 2026 | 16.1% | 3.77 |
| 15 Oct 2026 | 14.1% | 3.3 |