Reservoir · Tasmania · Australia · BOM Water Data Online
Risdon Brook
96.9% full
Capacity
3.6 hm³
Volume stored
4 hm³
Year completed
1968
Coordinates
42.801°S, 147.334°E
Last updated
2026-10-11
Current fill
96.9%vs 7 days ago
-0.2%losing
vs 1 year ago
-0.1%year-over-year
7-day trend
→stable
Drought context
Storage vs October average
100%of normal
96.9% full on 2026-10-11, against an average of 97.3% for October across 4 years of readings (-0.4 points).
Rain over the last three months · 21 September 2026
Extremely dry
In the three months to 21 September 2026 the area around Risdon Brook had extremely little rain for the season, a shortfall seen about one year in forty. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −2.10). 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: 2026-10-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -42.801, 147.334 · Open in Google Maps
About Risdon Brook
As of October 11, 2026, Risdon Brook is filled to 96.9% of its total capacity, holding roughly 4 hm³ of water out of a maximum 4 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.2 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Risdon Brook — 1095 data points between October 13, 2023 and October 11, 2026 — the level has ranged from a low of 92.8% (May 6, 2026) to a high of 98.9% (September 2, 2024). On average the reservoir is fullest around August and at its lowest around April.
The dam at Risdon Brook was completed in 1968. It is operated by BOM primarily for water supply.
Key facts
- Current fill level
- 96.9%
- Water stored
- 4 hm³
- Total capacity
- 4 hm³
- 7-day change
- ▼ 0.2 pts
- Year-on-year
- ▼ 0.1 pts
- Primary use
- Water supply
- Year completed
- 1968
- Operator
- BOM
- Coordinates
- 42.801°S, 147.334°E
- Last updated
- October 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Oct 2026 | 96.9% | 4 |
| 10 Oct 2026 | 97.0% | 4 |
| 9 Oct 2026 | 97.0% | 4 |
| 8 Oct 2026 | 97.2% | 4 |
| 7 Oct 2026 | 97.1% | 4 |
| 6 Oct 2026 | 97.1% | 4 |
| 5 Oct 2026 | 97.2% | 4 |
| 4 Oct 2026 | 97.1% | 4 |
| 3 Oct 2026 | 97.2% | 4 |
| 2 Oct 2026 | 97.2% | 4 |
| 1 Oct 2026 | 97.2% | 4 |
| 30 Sep 2026 | 97.3% | 4 |