Reservoir · Victoria · Australia · BOM Water Data Online
McCay
96.9% full
Capacity
1.4 hm³
Volume stored
1 hm³
River
Off-stream
Year completed
1960
Coordinates
37.092°S, 144.300°E
Last updated
2026-09-06
Current fill
96.9%vs 7 days ago
+0.2%gaining
vs 1 year ago
+25.4%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: 2026-09-06.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -37.092, 144.300 · Open in Google Maps
About McCay
As of September 6, 2026, McCay is filled to 96.9% of its total capacity, holding roughly 1 hm³ of water out of a maximum 1 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+0.2 pts), and it is 25.4 points above its level on the same date a year earlier.
Across the readings we hold for McCay — 1060 data points between September 10, 2023 and September 6, 2026 — the level has ranged from a low of 59.5% (October 6, 2025) to a high of 97.9% (April 3, 2024). On average the reservoir is fullest around April and at its lowest around October.
The dam at McCay was completed in 1960. It is operated by BOM primarily for water supply. It lies within the Off-stream Basin basin at 37.092°S, 144.300°E.
Key facts
- Current fill level
- 96.9%
- Water stored
- 1 hm³
- Total capacity
- 1 hm³
- 7-day change
- ▲ 0.2 pts
- Year-on-year
- ▲ 25.4 pts
- Primary use
- Water supply
- River
- Off-stream
- River basin
- Off-stream Basin
- Year completed
- 1960
- Operator
- BOM
- Coordinates
- 37.092°S, 144.300°E
- Last updated
- September 6, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 6 Sep 2026 | 96.9% | 1 |
| 5 Sep 2026 | 97.3% | 1 |
| 4 Sep 2026 | 97.7% | 1 |
| 3 Sep 2026 | 97.6% | 1 |
| 2 Sep 2026 | 97.0% | 1 |
| 1 Sep 2026 | 96.7% | 1 |
| 31 Aug 2026 | 96.7% | 1 |
| 30 Aug 2026 | 96.7% | 1 |
| 29 Aug 2026 | 96.7% | 1 |
| 28 Aug 2026 | 96.7% | 1 |
| 27 Aug 2026 | 96.4% | 1 |
| 26 Aug 2026 | 95.8% | 1 |