Reservoir · Victoria · Australia · BOM Water Data Online
Bostock Reservoir
94.3% full
Capacity
7.4 hm³
Volume stored
7 hm³
River
Moorabool River East Branch
Year completed
1954
Coordinates
37.602°S, 144.177°E
Last updated
2026-10-26
Current fill
94.3%vs 7 days ago
+1.9 ppgaining
vs 1 year ago
+90.1 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
193%of normal
94.3% full on 2026-10-26, against an average of 48.8% for October across 4 years of readings (+45.5 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Bostock Reservoir 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 +0.07). 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. 37.602°S, 144.177°E · Open in Google Maps
About Bostock Reservoir
As of October 26, 2026, Bostock Reservoir is filled to 94.3% of its total capacity, holding 6.99 hm³ of water out of a maximum 7.4 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has risen by 1.9 percentage points, and it is 90.1 points above its level on the same date a year earlier.
Across the readings we hold for Bostock Reservoir — 1086 data points between October 29, 2023 and October 26, 2026 — the level has ranged from a low of 1.6% (December 23, 2025) to a high of 96.2% (January 19, 2024). On average the reservoir is fullest around October and at its lowest around July.
The dam at Bostock Reservoir was completed in 1954. It is operated by BOM primarily for water supply. It lies within the Moorabool River East Branch Basin basin at 37.602°S, 144.177°E.
Key facts
- Current fill level
- 94.3% of total capacity
- Water stored
- 6.99 hm³
- Total capacity
- 7.4 hm³
- 7-day change
- ▲ 1.9 pp
- Year-on-year
- ▲ 90.1 pp
- Primary use
- Water supply
- River
- Moorabool River East Branch
- River basin
- Moorabool River East Branch Basin
- Year completed
- 1954
- Operator
- BOM
- Coordinates
- 37.602°S, 144.177°E
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 94.3% | 6.99 |
| 25 Oct 2026 | 92.4% | 6.85 |
| 24 Oct 2026 | 91.9% | 6.81 |
| 23 Oct 2026 | 92.0% | 6.82 |
| 22 Oct 2026 | 92.1% | 6.82 |
| 21 Oct 2026 | 92.2% | 6.83 |
| 20 Oct 2026 | 92.3% | 6.84 |
| 19 Oct 2026 | 92.4% | 6.85 |
| 18 Oct 2026 | 92.5% | 6.85 |
| 17 Oct 2026 | 92.6% | 6.86 |
| 16 Oct 2026 | 92.6% | 6.86 |
| 15 Oct 2026 | 92.7% | 6.87 |