Reservoir · Western Australia · Australia · BOM Water Data Online
Waroona
31.5% full
Capacity
15.2 hm³
Volume stored
5 hm³
River
Drakes Brook
Year completed
1966
Coordinates
32.847°S, 115.995°E
Last updated
2026-09-06
Current fill
31.5%vs 7 days ago
+1.3%gaining
vs 1 year ago
-4.5%year-over-year
7-day trend
→stable
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: 2026-09-06.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -32.847, 115.995 · Open in Google Maps
About Waroona
As of September 6, 2026, Waroona is filled to 31.5% of its total capacity, holding roughly 5 hm³ of water out of a maximum 15 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (+1.3 pts), and it is 4.5 points below its level on the same date a year earlier.
Across the readings we hold for Waroona — 1043 data points between September 11, 2023 and September 6, 2026 — the level has ranged from a low of 5.6% (April 21, 2025) to a high of 72.6% (October 12, 2023). On average the reservoir is fullest around October and at its lowest around April.
The dam at Waroona was completed in 1966. It is operated by BOM primarily for water supply. It lies within the Drakes Brook Basin basin at 32.847°S, 115.995°E.
Key facts
- Current fill level
- 31.5%
- Water stored
- 5 hm³
- Total capacity
- 15 hm³
- 7-day change
- ▲ 1.3 pts
- Year-on-year
- ▼ 4.5 pts
- Primary use
- Water supply
- River
- Drakes Brook
- River basin
- Drakes Brook Basin
- Year completed
- 1966
- Operator
- BOM
- Coordinates
- 32.847°S, 115.995°E
- Last updated
- September 6, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 6 Sep 2026 | 31.5% | 5 |
| 5 Sep 2026 | 31.2% | 5 |
| 4 Sep 2026 | 30.9% | 5 |
| 3 Sep 2026 | 30.8% | 5 |
| 2 Sep 2026 | 30.7% | 5 |
| 1 Sep 2026 | 30.6% | 5 |
| 31 Aug 2026 | 30.4% | 5 |
| 30 Aug 2026 | 30.2% | 5 |
| 29 Aug 2026 | 29.9% | 5 |
| 28 Aug 2026 | 29.6% | 5 |
| 27 Aug 2026 | 29.1% | 4 |
| 26 Aug 2026 | 28.5% | 4 |