Reservoir · Victoria · Australia · BOM Water Data Online
Lake Glenmaggie
94.4% full
Capacity
177.6 hm³
Volume stored
168 hm³
River
Macalister River
Year completed
1926
Coordinates
37.907°S, 146.768°E
Last updated
2026-10-26
Current fill
94.4%vs 7 days ago
-4.3 pplosing
vs 1 year ago
+1.0 ppyear-over-year
7-day trend
↓falling
Drought context
Storage vs October average
98%of normal
94.4% full on 2026-10-26, against an average of 96.2% for October across 4 years of readings (-1.8 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Lake Glenmaggie 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 +0.54). 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: 2026-10-26.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 37.907°S, 146.768°E · Open in Google Maps
About Lake Glenmaggie
As of October 26, 2026, Lake Glenmaggie is filled to 94.4% of its total capacity, holding 167.63 hm³ of water out of a maximum 177.6 hm³. At this level the reservoir is high. Of that total, 172.8 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 4.3 percentage points, and it is 1.0 points above its level on the same date a year earlier.
Across the readings we hold for Lake Glenmaggie — 1073 data points between October 28, 2023 and October 26, 2026 — the level has ranged from a low of 35.9% (June 23, 2025) to a high of 99.3% (December 20, 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
- 94.4% of total capacity
- Water stored
- 167.63 hm³
- Total capacity
- 177.6 hm³
- Usable capacity
- 172.8 hm³
- 7-day change
- ▼ 4.3 pp
- Year-on-year
- ▲ 1.0 pp
- 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
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 94.4% | 167.63 |
| 25 Oct 2026 | 94.8% | 168.34 |
| 24 Oct 2026 | 96.2% | 170.79 |
| 23 Oct 2026 | 97.4% | 173.02 |
| 22 Oct 2026 | 98.1% | 174.23 |
| 21 Oct 2026 | 98.5% | 175.01 |
| 20 Oct 2026 | 98.7% | 175.28 |
| 19 Oct 2026 | 98.7% | 175.26 |
| 18 Oct 2026 | 98.7% | 175.24 |
| 17 Oct 2026 | 98.5% | 175.04 |
| 16 Oct 2026 | 98.4% | 174.73 |
| 15 Oct 2026 | 98.2% | 174.47 |