Reservoir · Victoria · Australia · BOM Water Data Online
Merrimu Reservoir
71.5% full
Capacity
32.5 hm³
Volume stored
23 hm³
River
Pyrites Creek
Year completed
1986
Coordinates
37.620°S, 144.490°E
Last updated
2026-07-29
Current fill
71.5%vs 7 days ago
0.0%stable
vs 1 year ago
+14.5%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: 2026-07-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -37.620, 144.490 · Open in Google Maps
About Merrimu Reservoir
As of July 29, 2026, Merrimu Reservoir is filled to 71.5% of its total capacity, holding roughly 23 hm³ of water out of a maximum 33 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it is 14.5 points above its level on the same date a year earlier.
Across the readings we hold for Merrimu Reservoir — 1074 data points between July 30, 2023 and July 29, 2026 — the level has ranged from a low of 56.9% (June 4, 2026) to a high of 95.7% (January 12, 2024). On average the reservoir is fullest around August and at its lowest around June.
The dam at Merrimu Reservoir was completed in 1986. It is operated by BOM primarily for water supply. It lies within the Pyrites Creek Basin basin at 37.620°S, 144.490°E.
Key facts
- Current fill level
- 71.5%
- Water stored
- 23 hm³
- Total capacity
- 33 hm³
- 7-day change
- No change
- Year-on-year
- ▲ 14.5 pts
- Primary use
- Water supply
- River
- Pyrites Creek
- River basin
- Pyrites Creek Basin
- Year completed
- 1986
- Operator
- BOM
- Coordinates
- 37.620°S, 144.490°E
- Last updated
- July 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Jul 2026 | 71.5% | 23 |
| 28 Jul 2026 | 71.5% | 23 |
| 27 Jul 2026 | 71.4% | 23 |
| 26 Jul 2026 | 71.4% | 23 |
| 25 Jul 2026 | 71.3% | 23 |
| 24 Jul 2026 | 71.2% | 23 |
| 23 Jul 2026 | 71.2% | 23 |
| 22 Jul 2026 | 71.1% | 23 |
| 21 Jul 2026 | 71.0% | 23 |
| 20 Jul 2026 | 70.9% | 23 |
| 19 Jul 2026 | 70.7% | 23 |
| 18 Jul 2026 | 70.5% | 23 |
Frequently asked questions
What is the current water level of Merrimu Reservoir?
As of July 29, 2026, Merrimu Reservoir is at 71.5% of its capacity, holding approximately 23 hm³ of water, according to BOM data.
Is Merrimu Reservoir reservoir full?
No. As of July 29, 2026, Merrimu Reservoir is within its normal operating range at 71.5% of its capacity, so it is not full.
Is the water level at Merrimu Reservoir rising or falling?
The level at Merrimu Reservoir has been broadly stable over the latest week on record (0.0 points).
How much water can Merrimu Reservoir hold?
Merrimu Reservoir has a total capacity of 33 hm³.
Where is Merrimu Reservoir reservoir located?
Merrimu Reservoir is located in Victoria, Australia, within the Pyrites Creek Basin basin (coordinates 37.620°S, 144.490°E).
When was Merrimu Reservoir dam built?
The dam at Merrimu Reservoir was completed in 1986.
What is Merrimu Reservoir used for?
Merrimu Reservoir is used primarily for water supply, and is managed by BOM.