Reservoir · Victoria · Australia · BOM Water Data Online
Bostock Reservoir
66.4% full
Capacity
7.4 hm³
Volume stored
5 hm³
River
Moorabool River East Branch
Year completed
1954
Coordinates
37.602°S, 144.177°E
Last updated
2026-09-09
Current fill
66.4%vs 7 days ago
+4.8%gaining
vs 1 year ago
+52.9%year-over-year
7-day trend
↑rising
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: 2026-09-09.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -37.602, 144.177 · Open in Google Maps
About Bostock Reservoir
As of September 9, 2026, Bostock Reservoir is filled to 66.4% of its total capacity, holding roughly 5 hm³ of water out of a maximum 7 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has risen by 4.8 percentage points, and it is 52.9 points above its level on the same date a year earlier.
Across the readings we hold for Bostock Reservoir — 1087 data points between September 11, 2023 and September 9, 2026 — the level has ranged from a low of 1.6% (December 23, 2025) to a high of 98.6% (September 11, 2023). On average the reservoir is fullest around September 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
- 66.4%
- Water stored
- 5 hm³
- Total capacity
- 7 hm³
- 7-day change
- ▲ 4.8 pts
- Year-on-year
- ▲ 52.9 pts
- 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
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 66.4% | 5 |
| 8 Sep 2026 | 66.0% | 5 |
| 7 Sep 2026 | 65.4% | 5 |
| 6 Sep 2026 | 64.5% | 5 |
| 5 Sep 2026 | 63.0% | 5 |
| 4 Sep 2026 | 62.3% | 5 |
| 3 Sep 2026 | 62.0% | 5 |
| 2 Sep 2026 | 61.6% | 5 |
| 1 Sep 2026 | 61.4% | 5 |
| 31 Aug 2026 | 61.2% | 5 |
| 30 Aug 2026 | 61.0% | 5 |
| 29 Aug 2026 | 60.6% | 4 |