Reservoir · Western Australia · Australia · BOM Water Data Online
Mundaring
38.5% full
Capacity
63.6 hm³
Volume stored
25 hm³
River
Helena River
Year completed
1902
Coordinates
31.987°S, 116.214°E
Last updated
2026-06-08
Current fill
38.5%vs 7 days ago
0.0%stable
vs 1 year ago
-0.8%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: 2026-06-08.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -31.987, 116.214 · Open in Google Maps
About Mundaring
As of June 8, 2026, Mundaring is filled to 38.5% of its total capacity, holding roughly 25 hm³ of water out of a maximum 64 hm³. At this level the reservoir is low. Of that total, about 57 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Mundaring — 1062 data points between June 12, 2023 and June 8, 2026 — the level has ranged from a low of 33.2% (May 22, 2025) to a high of 66.1% (September 17, 2023). On average the reservoir is fullest around October and at its lowest around May.
The dam at Mundaring was completed in 1902. It is operated by BOM primarily for water supply. It lies within the Helena River Basin basin at 31.987°S, 116.214°E.
Key facts
- Current fill level
- 38.5%
- Water stored
- 25 hm³
- Total capacity
- 64 hm³
- Usable capacity
- 57 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 0.8 pts
- Primary use
- Water supply
- River
- Helena River
- River basin
- Helena River Basin
- Year completed
- 1902
- Operator
- BOM
- Coordinates
- 31.987°S, 116.214°E
- Last updated
- June 8, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 8 Jun 2026 | 38.5% | 24 |
| 7 Jun 2026 | 38.5% | 24 |
| 6 Jun 2026 | 38.5% | 24 |
| 5 Jun 2026 | 38.5% | 24 |
| 4 Jun 2026 | 38.5% | 24 |
| 3 Jun 2026 | 38.4% | 24 |
| 2 Jun 2026 | 38.4% | 24 |
| 1 Jun 2026 | 38.4% | 24 |
| 31 May 2026 | 38.3% | 24 |
| 30 May 2026 | 38.2% | 24 |
| 29 May 2026 | 38.2% | 24 |
| 28 May 2026 | 38.2% | 24 |
Frequently asked questions
What is the current water level of Mundaring?
As of June 8, 2026, Mundaring is at 38.5% of its capacity, holding approximately 25 hm³ of water, according to BOM data.
Is Mundaring reservoir full?
No. As of June 8, 2026, Mundaring is low at 38.5% of its capacity, so it is not full.
Is the water level at Mundaring rising or falling?
The level at Mundaring has been broadly stable over the latest week on record (0.0 points).
How much water can Mundaring hold?
Mundaring has a total capacity of 64 hm³, of which about 57 hm³ is usable storage.
Where is Mundaring reservoir located?
Mundaring is located in Western Australia, Australia, within the Helena River Basin basin (coordinates 31.987°S, 116.214°E).
When was Mundaring dam built?
The dam at Mundaring was completed in 1902.
What is Mundaring used for?
Mundaring is used primarily for water supply, and is managed by BOM.