Reservoir · New South Wales · Australia · BOM Water Data Online
Tantangara Reservoir
8.2% full
Capacity
254.1 hm³
Volume stored
21 hm³
River
Murrumbidgee River
Year completed
1960
Coordinates
35.746°S, 148.659°E
Last updated
2026-10-26
Current fill
8.2%vs 7 days ago
+0.2 ppgaining
vs 1 year ago
-0.9 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
78%of normal
8.2% full on 2026-10-26, against an average of 10.5% for October across 4 years of readings (-2.3 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Tantangara Reservoir 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 −0.72). 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. 35.746°S, 148.659°E · Open in Google Maps
About Tantangara Reservoir
As of October 26, 2026, Tantangara Reservoir is filled to 8.2% of its total capacity, holding 20.72 hm³ of water out of a maximum 254.1 hm³. At this level the reservoir is critically low. Of that total, 238.8 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.2 pp), and it sits close to where it was a year earlier.
Across the readings we hold for Tantangara Reservoir — 1095 data points between October 28, 2023 and October 26, 2026 — the level has ranged from a low of 7.0% (May 17, 2026) to a high of 30.1% (August 3, 2025). On average the reservoir is fullest around July and at its lowest around November.
The dam at Tantangara Reservoir was completed in 1960. It is operated by BOM primarily for water supply. It lies within the Murrumbidgee River Basin basin at 35.746°S, 148.659°E.
Key facts
- Current fill level
- 8.2% of total capacity
- Water stored
- 20.72 hm³
- Total capacity
- 254.1 hm³
- Usable capacity
- 238.8 hm³
- 7-day change
- ▲ 0.2 pp
- Year-on-year
- ▼ 0.9 pp
- Primary use
- Water supply
- River
- Murrumbidgee River
- River basin
- Murrumbidgee River Basin
- Year completed
- 1960
- Operator
- BOM
- Coordinates
- 35.746°S, 148.659°E
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 8.2% | 20.72 |
| 25 Oct 2026 | 7.9% | 20.16 |
| 24 Oct 2026 | 7.9% | 20.18 |
| 23 Oct 2026 | 7.9% | 20.18 |
| 22 Oct 2026 | 7.9% | 20.15 |
| 21 Oct 2026 | 7.9% | 20.09 |
| 20 Oct 2026 | 7.9% | 20.05 |
| 19 Oct 2026 | 8.0% | 20.2 |
| 18 Oct 2026 | 8.0% | 20.41 |
| 17 Oct 2026 | 8.1% | 20.67 |
| 16 Oct 2026 | 8.2% | 20.93 |
| 15 Oct 2026 | 8.3% | 21.21 |