Reservoir · New South Wales · Australia · BOM Water Data Online
Tombullen
94.1% full
Capacity
11.2 hm³
Volume stored
11 hm³
Coordinates
34.648°S, 146.152°E
Last updated
2026-10-26
Current fill
94.1%vs 7 days ago
+30.4 ppgaining
vs 1 year ago
+7.2 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
162%of normal
94.1% full on 2026-10-26, against an average of 58.2% for October across 4 years of readings (+35.9 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Tombullen had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −0.24). 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. 34.648°S, 146.152°E · Open in Google Maps
About Tombullen
As of October 26, 2026, Tombullen is filled to 94.1% of its total capacity, holding 10.56 hm³ of water out of a maximum 11.2 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has risen by 30.4 percentage points, and it is 7.2 points above its level on the same date a year earlier.
Across the readings we hold for Tombullen — 1075 data points between October 28, 2023 and October 26, 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. It is at 34.648°S, 146.152°E.
Key facts
- Current fill level
- 94.1% of total capacity
- Water stored
- 10.56 hm³
- Total capacity
- 11.2 hm³
- 7-day change
- ▲ 30.4 pp
- Year-on-year
- ▲ 7.2 pp
- Primary use
- Water supply
- Operator
- BOM
- Coordinates
- 34.648°S, 146.152°E
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 94.1% | 10.56 |
| 25 Oct 2026 | 94.4% | 10.6 |
| 24 Oct 2026 | 94.4% | 10.6 |
| 23 Oct 2026 | 90.0% | 10.11 |
| 22 Oct 2026 | 79.5% | 8.92 |
| 21 Oct 2026 | 70.6% | 7.93 |
| 20 Oct 2026 | 64.4% | 7.23 |
| 19 Oct 2026 | 63.7% | 7.16 |
| 18 Oct 2026 | 64.1% | 7.2 |
| 17 Oct 2026 | 65.4% | 7.35 |
| 16 Oct 2026 | 67.4% | 7.57 |
| 15 Oct 2026 | 71.1% | 7.99 |