Reservoir · Victoria · Australia · BOM Water Data Online
West Barwon Reservoir
72.2% full
Capacity
22.1 hm³
Volume stored
16 hm³
River
Barwon River East Branch
Year completed
1965
Coordinates
38.538°S, 143.720°E
Last updated
2026-10-26
Current fill
72.2%vs 7 days ago
-1.9 pplosing
vs 1 year ago
+36.8 ppyear-over-year
7-day trend
↓falling
Drought context
Storage vs October average
155%of normal
72.2% full on 2026-10-26, against an average of 46.5% for October across 4 years of readings (+25.7 points).
Rain over the last three months · 11 October 2026
Severely dry
In the three months to 11 October 2026 the area around West Barwon Reservoir had far less rain than normal, a shortfall seen about one year in fifteen. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −1.80). 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. 38.538°S, 143.720°E · Open in Google Maps
About West Barwon Reservoir
As of October 26, 2026, West Barwon Reservoir is filled to 72.2% of its total capacity, holding 15.93 hm³ of water out of a maximum 22.1 hm³. At this level the reservoir is within its normal operating range. Of that total, 21.5 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 1.9 percentage points, and it is 36.8 points above its level on the same date a year earlier.
Across the readings we hold for West Barwon Reservoir — 1095 data points between October 28, 2023 and October 26, 2026 — the level has ranged from a low of 15.9% (May 15, 2025) to a high of 79.9% (August 25, 2026). On average the reservoir is fullest around August and at its lowest around May.
The dam at West Barwon Reservoir was completed in 1965. It is operated by BOM primarily for water supply. It lies within the Barwon River East Branch Basin basin at 38.538°S, 143.720°E.
Key facts
- Current fill level
- 72.2% of total capacity
- Water stored
- 15.93 hm³
- Total capacity
- 22.1 hm³
- Usable capacity
- 21.5 hm³
- 7-day change
- ▼ 1.9 pp
- Year-on-year
- ▲ 36.8 pp
- Primary use
- Water supply
- River
- Barwon River East Branch
- River basin
- Barwon River East Branch Basin
- Year completed
- 1965
- Operator
- BOM
- Coordinates
- 38.538°S, 143.720°E
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 72.2% | 15.93 |
| 25 Oct 2026 | 72.4% | 15.97 |
| 24 Oct 2026 | 72.6% | 16.01 |
| 23 Oct 2026 | 73.0% | 16.1 |
| 22 Oct 2026 | 73.1% | 16.14 |
| 21 Oct 2026 | 73.2% | 16.15 |
| 20 Oct 2026 | 73.6% | 16.24 |
| 19 Oct 2026 | 74.1% | 16.35 |
| 18 Oct 2026 | 74.5% | 16.44 |
| 17 Oct 2026 | 75.0% | 16.54 |
| 16 Oct 2026 | 75.2% | 16.6 |
| 15 Oct 2026 | 75.7% | 16.69 |