Reservoir · Victoria · Australia · BOM Water Data Online
Rocklands Reservoir
40.8% full
Capacity
296 hm³
Volume stored
121 hm³
River
Mid-Glenelg River
Year completed
1953
Coordinates
37.252°S, 142.074°E
Last updated
2026-09-10
Current fill
40.8%vs 7 days ago
+1.4%gaining
vs 1 year ago
+5.0%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: 2026-09-10.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -37.252, 142.074 · Open in Google Maps
About Rocklands Reservoir
As of September 10, 2026, Rocklands Reservoir is filled to 40.8% of its total capacity, holding roughly 121 hm³ of water out of a maximum 296 hm³. At this level the reservoir is within its normal operating range. Of that total, about 293 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+1.4 pts), and it is 5.0 points above its level on the same date a year earlier.
Across the readings we hold for Rocklands Reservoir — 1096 data points between September 11, 2023 and September 10, 2026 — the level has ranged from a low of 25.9% (April 30, 2026) to a high of 61.9% (September 22, 2023). On average the reservoir is fullest around October and at its lowest around May.
The dam at Rocklands Reservoir was completed in 1953. It is operated by BOM primarily for water supply. It lies within the Mid-Glenelg River Basin basin at 37.252°S, 142.074°E.
Key facts
- Current fill level
- 40.8%
- Water stored
- 121 hm³
- Total capacity
- 296 hm³
- Usable capacity
- 293 hm³
- 7-day change
- ▲ 1.4 pts
- Year-on-year
- ▲ 5.0 pts
- Primary use
- Water supply
- River
- Mid-Glenelg River
- River basin
- Mid-Glenelg River Basin
- Year completed
- 1953
- Operator
- BOM
- Coordinates
- 37.252°S, 142.074°E
- Last updated
- September 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Sep 2026 | 40.8% | 121 |
| 9 Sep 2026 | 40.7% | 120 |
| 8 Sep 2026 | 40.5% | 120 |
| 7 Sep 2026 | 40.3% | 119 |
| 6 Sep 2026 | 40.1% | 119 |
| 5 Sep 2026 | 39.8% | 118 |
| 4 Sep 2026 | 39.6% | 117 |
| 3 Sep 2026 | 39.4% | 117 |
| 2 Sep 2026 | 39.2% | 116 |
| 1 Sep 2026 | 39.1% | 116 |
| 31 Aug 2026 | 38.9% | 115 |
| 30 Aug 2026 | 38.8% | 115 |