Reservoir · New South Wales · Australia · BOM Water Data Online
Tombullen
74.8% full
Capacity
11.2 hm³
Volume stored
8 hm³
Coordinates
34.648°S, 146.152°E
Last updated
2026-10-08
Current fill
74.8%vs 7 days ago
+57.6%gaining
vs 1 year ago
+67.3%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: 2026-10-08.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -34.648, 146.152 · Open in Google Maps
About Tombullen
As of October 8, 2026, Tombullen is filled to 74.8% of its total capacity, holding roughly 8 hm³ of water out of a maximum 11 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 57.6 percentage points, and it is 67.3 points above its level on the same date a year earlier.
Across the readings we hold for Tombullen — 1076 data points between October 9, 2023 and October 8, 2026 — the level has ranged from a low of 4.6% (August 7, 2025) to a high of 96.2% (May 2, 2024). On average the reservoir is fullest around November and at its lowest around July.
It is operated by BOM primarily for water supply.
Key facts
- Current fill level
- 74.8%
- Water stored
- 8 hm³
- Total capacity
- 11 hm³
- 7-day change
- ▲ 57.6 pts
- Year-on-year
- ▲ 67.3 pts
- Primary use
- Water supply
- Operator
- BOM
- Coordinates
- 34.648°S, 146.152°E
- Last updated
- October 8, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 8 Oct 2026 | 74.8% | 8 |
| 7 Oct 2026 | 67.2% | 8 |
| 6 Oct 2026 | 58.0% | 7 |
| 5 Oct 2026 | 42.5% | 5 |
| 4 Oct 2026 | 28.1% | 3 |
| 3 Oct 2026 | 15.9% | 2 |
| 2 Oct 2026 | 15.6% | 2 |
| 1 Oct 2026 | 17.2% | 2 |
| 30 Sep 2026 | 16.9% | 2 |
| 29 Sep 2026 | 11.4% | 1 |
| 28 Sep 2026 | 10.1% | 1 |
| 27 Sep 2026 | 10.3% | 1 |