Reservoir · South Australia · Australia · BOM Water Data Online
Millbrook
92.8% full
Capacity
15.7 hm³
Volume stored
15 hm³
River
River Torrens
Year completed
1918
Coordinates
34.826°S, 138.811°E
Last updated
2026-09-05
Current fill
92.8%vs 7 days ago
+2.8%gaining
vs 1 year ago
+13.0%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: 2026-09-05.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -34.826, 138.811 · Open in Google Maps
About Millbrook
As of September 5, 2026, Millbrook is filled to 92.8% of its total capacity, holding roughly 15 hm³ of water out of a maximum 16 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has risen by 2.8 percentage points, and it is 13.0 points above its level on the same date a year earlier.
Across the readings we hold for Millbrook — 1090 data points between September 11, 2023 and September 5, 2026 — the level has ranged from a low of 44.1% (May 25, 2024) to a high of 92.8% (September 5, 2026). On average the reservoir is fullest around October and at its lowest around May.
The dam at Millbrook was completed in 1918. It is operated by BOM primarily for water supply. It lies within the River Torrens Basin basin at 34.826°S, 138.811°E.
Key facts
- Current fill level
- 92.8%
- Water stored
- 15 hm³
- Total capacity
- 16 hm³
- 7-day change
- ▲ 2.8 pts
- Year-on-year
- ▲ 13.0 pts
- Primary use
- Water supply
- River
- River Torrens
- River basin
- River Torrens Basin
- Year completed
- 1918
- Operator
- BOM
- Coordinates
- 34.826°S, 138.811°E
- Last updated
- September 5, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 5 Sep 2026 | 92.8% | 15 |
| 4 Sep 2026 | 92.5% | 15 |
| 3 Sep 2026 | 92.1% | 14 |
| 2 Sep 2026 | 91.6% | 14 |
| 1 Sep 2026 | 91.3% | 14 |
| 31 Aug 2026 | 90.9% | 14 |
| 30 Aug 2026 | 90.4% | 14 |
| 29 Aug 2026 | 90.0% | 14 |
| 28 Aug 2026 | 89.5% | 14 |
| 27 Aug 2026 | 89.1% | 14 |
| 26 Aug 2026 | 88.2% | 14 |
| 25 Aug 2026 | 86.6% | 14 |