Reservoir · Western Australia · Australia · BOM Water Data Online
Waroona
33.7% full
Capacity
15.2 hm³
Volume stored
5 hm³
River
Drakes Brook
Year completed
1966
Coordinates
32.847°S, 115.995°E
Last updated
2026-10-20
Current fill
33.7%vs 7 days ago
+1.9 ppgaining
vs 1 year ago
-8.1 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
73%of normal
33.7% full on 2026-10-20, against an average of 46.4% for October across 4 years of readings (-12.7 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Waroona had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −0.99). 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: 2026-10-20.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 32.847°S, 115.995°E · Open in Google Maps
About Waroona
As of October 20, 2026, Waroona is filled to 33.7% of its total capacity, holding 5.12 hm³ of water out of a maximum 15.2 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has risen by 1.9 percentage points, and it is 8.1 points below its level on the same date a year earlier.
Across the readings we hold for Waroona — 1039 data points between October 29, 2023 and October 20, 2026 — the level has ranged from a low of 5.6% (April 21, 2025) to a high of 68.7% (October 29, 2023). On average the reservoir is fullest around November 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
- 33.7% of total capacity
- Water stored
- 5.12 hm³
- Total capacity
- 15.2 hm³
- 7-day change
- ▲ 1.9 pp
- Year-on-year
- ▼ 8.1 pp
- 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
- October 20, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 20 Oct 2026 | 33.7% | 5.12 |
| 19 Oct 2026 | 33.7% | 5.12 |
| 18 Oct 2026 | 33.7% | 5.12 |
| 17 Oct 2026 | 33.7% | 5.11 |
| 16 Oct 2026 | 33.7% | 5.11 |
| 15 Oct 2026 | 33.3% | 5.05 |
| 14 Oct 2026 | 31.3% | 4.75 |
| 13 Oct 2026 | 31.8% | 4.82 |
| 12 Oct 2026 | 32.7% | 4.96 |
| 11 Oct 2026 | 32.9% | 5 |
| 10 Oct 2026 | 33.1% | 5.03 |
| 9 Oct 2026 | 33.3% | 5.05 |