Reservoir · Tasmania · Australia · BOM Water Data Online
Bronte Lagoon
53.6% full
Capacity
19.2 hm³
Volume stored
10 hm³
River
Woodwards Creek
Year completed
1953
Coordinates
42.194°S, 146.487°E
Last updated
2026-09-07
Current fill
53.6%vs 7 days ago
+15.7%gaining
vs 1 year ago
-16.0%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: 2026-09-07.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -42.194, 146.487 · Open in Google Maps
About Bronte Lagoon
As of September 7, 2026, Bronte Lagoon is filled to 53.6% of its total capacity, holding roughly 10 hm³ of water out of a maximum 19 hm³. At this level the reservoir is within its normal operating range. Of that total, about 16 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 15.7 percentage points, and it is 16.0 points below its level on the same date a year earlier.
Across the readings we hold for Bronte Lagoon — 1094 data points between September 10, 2023 and September 7, 2026 — the level has ranged from a low of 28.7% (July 8, 2025) to a high of 80.2% (September 26, 2025). On average the reservoir is fullest around September and at its lowest around June.
The dam at Bronte Lagoon was completed in 1953. It is operated by BOM primarily for water supply. It lies within the Woodwards Creek Basin basin at 42.194°S, 146.487°E.
Key facts
- Current fill level
- 53.6%
- Water stored
- 10 hm³
- Total capacity
- 19 hm³
- Usable capacity
- 16 hm³
- 7-day change
- ▲ 15.7 pts
- Year-on-year
- ▼ 16.0 pts
- Primary use
- Water supply
- River
- Woodwards Creek
- River basin
- Woodwards Creek Basin
- Year completed
- 1953
- Operator
- BOM
- Coordinates
- 42.194°S, 146.487°E
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Sep 2026 | 53.6% | 10 |
| 6 Sep 2026 | 53.7% | 10 |
| 5 Sep 2026 | 51.5% | 10 |
| 4 Sep 2026 | 43.0% | 8 |
| 3 Sep 2026 | 34.9% | 7 |
| 2 Sep 2026 | 34.4% | 7 |
| 1 Sep 2026 | 35.9% | 7 |
| 31 Aug 2026 | 37.9% | 7 |
| 30 Aug 2026 | 39.8% | 8 |
| 29 Aug 2026 | 41.5% | 8 |
| 28 Aug 2026 | 43.0% | 8 |
| 27 Aug 2026 | 43.9% | 8 |