Reservoir · Victoria · Australia · BOM Water Data Online
Maroondah
60.6% full
Capacity
28.2 hm³
Volume stored
17 hm³
River
Watts River
Year completed
1927
Coordinates
37.634°S, 145.564°E
Last updated
2026-07-27
Current fill
60.6%vs 7 days ago
+0.4%gaining
vs 1 year ago
+19.2%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: 2026-07-27.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -37.634, 145.564 · Open in Google Maps
About Maroondah
As of July 27, 2026, Maroondah is filled to 60.6% of its total capacity, holding roughly 17 hm³ of water out of a maximum 28 hm³. At this level the reservoir is within its normal operating range. Of that total, about 22 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.4 pts), and it is 19.2 points above its level on the same date a year earlier.
Across the readings we hold for Maroondah — 1063 data points between July 30, 2023 and July 27, 2026 — the level has ranged from a low of 16.2% (May 12, 2025) to a high of 79.6% (October 5, 2023). On average the reservoir is fullest around December and at its lowest around May.
The dam at Maroondah was completed in 1927. It is operated by BOM primarily for water supply. It lies within the Watts River Basin basin at 37.634°S, 145.564°E.
Key facts
- Current fill level
- 60.6%
- Water stored
- 17 hm³
- Total capacity
- 28 hm³
- Usable capacity
- 22 hm³
- 7-day change
- ▲ 0.4 pts
- Year-on-year
- ▲ 19.2 pts
- Primary use
- Water supply
- River
- Watts River
- River basin
- Watts River Basin
- Year completed
- 1927
- Operator
- BOM
- Coordinates
- 37.634°S, 145.564°E
- Last updated
- July 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Jul 2026 | 60.6% | 17 |
| 26 Jul 2026 | 60.2% | 17 |
| 25 Jul 2026 | 59.6% | 17 |
| 24 Jul 2026 | 59.4% | 17 |
| 23 Jul 2026 | 59.3% | 17 |
| 22 Jul 2026 | 59.2% | 17 |
| 21 Jul 2026 | 59.2% | 17 |
| 20 Jul 2026 | 59.2% | 17 |
| 19 Jul 2026 | 59.2% | 17 |
| 18 Jul 2026 | 59.0% | 17 |
| 17 Jul 2026 | 58.9% | 17 |
| 16 Jul 2026 | 58.6% | 17 |
Frequently asked questions
What is the current water level of Maroondah?
As of July 27, 2026, Maroondah is at 60.6% of its capacity, holding approximately 17 hm³ of water, according to BOM data.
Is Maroondah reservoir full?
No. As of July 27, 2026, Maroondah is within its normal operating range at 60.6% of its capacity, so it is not full.
Is the water level at Maroondah rising or falling?
The level at Maroondah has been broadly stable over the latest week on record (+0.4 points).
How much water can Maroondah hold?
Maroondah has a total capacity of 28 hm³, of which about 22 hm³ is usable storage.
Where is Maroondah reservoir located?
Maroondah is located in Victoria, Australia, within the Watts River Basin basin (coordinates 37.634°S, 145.564°E).
When was Maroondah dam built?
The dam at Maroondah was completed in 1927.
What is Maroondah used for?
Maroondah is used primarily for water supply, and is managed by BOM.