Reservoir · Victoria · Australia · BOM Water Data Online
Lake Glenmaggie
85.3% full
Capacity
177.6 hm³
Volume stored
152 hm³
River
Macalister River
Year completed
1926
Coordinates
37.907°S, 146.768°E
Last updated
2026-07-29
Current fill
85.3%vs 7 days ago
+0.4%gaining
vs 1 year ago
+34.6%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. -37.907, 146.768 · Open in Google Maps
About Lake Glenmaggie
As of July 29, 2026, Lake Glenmaggie is filled to 85.3% of its total capacity, holding roughly 152 hm³ of water out of a maximum 178 hm³. At this level the reservoir is high. Of that total, about 173 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 34.6 points above its level on the same date a year earlier.
Across the readings we hold for Lake Glenmaggie — 1072 data points between July 30, 2023 and July 29, 2026 — the level has ranged from a low of 35.9% (June 23, 2025) to a high of 99.5% (October 22, 2023). On average the reservoir is fullest around October and at its lowest around June.
The dam at Lake Glenmaggie was completed in 1926. It is operated by BOM primarily for water supply. It lies within the Macalister River Basin basin at 37.907°S, 146.768°E.
Key facts
- Current fill level
- 85.3%
- Water stored
- 152 hm³
- Total capacity
- 178 hm³
- Usable capacity
- 173 hm³
- 7-day change
- ▲ 0.4 pts
- Year-on-year
- ▲ 34.6 pts
- Primary use
- Water supply
- River
- Macalister River
- River basin
- Macalister River Basin
- Year completed
- 1926
- Operator
- BOM
- Coordinates
- 37.907°S, 146.768°E
- Last updated
- July 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Jul 2026 | 85.3% | 151 |
| 28 Jul 2026 | 84.9% | 151 |
| 27 Jul 2026 | 84.6% | 150 |
| 26 Jul 2026 | 84.2% | 150 |
| 25 Jul 2026 | 83.9% | 149 |
| 24 Jul 2026 | 83.4% | 148 |
| 23 Jul 2026 | 83.0% | 147 |
| 22 Jul 2026 | 82.5% | 147 |
| 21 Jul 2026 | 82.0% | 146 |
| 20 Jul 2026 | 81.3% | 145 |
| 19 Jul 2026 | 80.6% | 143 |
| 18 Jul 2026 | 79.8% | 142 |
Frequently asked questions
What is the current water level of Lake Glenmaggie?
As of July 29, 2026, Lake Glenmaggie is at 85.3% of its capacity, holding approximately 152 hm³ of water, according to BOM data.
Is Lake Glenmaggie reservoir full?
No. As of July 29, 2026, Lake Glenmaggie is high at 85.3% of its capacity, so it is not full.
Is the water level at Lake Glenmaggie rising or falling?
The level at Lake Glenmaggie has been broadly stable over the latest week on record (+0.4 points).
How much water can Lake Glenmaggie hold?
Lake Glenmaggie has a total capacity of 178 hm³, of which about 173 hm³ is usable storage.
Where is Lake Glenmaggie reservoir located?
Lake Glenmaggie is located in Victoria, Australia, within the Macalister River Basin basin (coordinates 37.907°S, 146.768°E).
When was Lake Glenmaggie dam built?
The dam at Lake Glenmaggie was completed in 1926.
What is Lake Glenmaggie used for?
Lake Glenmaggie is used primarily for water supply, and is managed by BOM.