Reservoir · New South Wales · Australia · BOM Water Data Online
Tantangara Reservoir
15.5% full
Capacity
254.1 hm³
Volume stored
39 hm³
River
Murrumbidgee River
Year completed
1960
Coordinates
35.746°S, 148.659°E
Last updated
2026-09-08
Current fill
15.5%vs 7 days ago
+2.0%gaining
vs 1 year ago
-7.6%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: 2026-09-08.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -35.746, 148.659 · Open in Google Maps
About Tantangara Reservoir
As of September 8, 2026, Tantangara Reservoir is filled to 15.5% of its total capacity, holding roughly 39 hm³ of water out of a maximum 254 hm³. At this level the reservoir is critically low. Of that total, about 239 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 2.0 percentage points, and it is 7.6 points below its level on the same date a year earlier.
Across the readings we hold for Tantangara Reservoir — 1095 data points between September 10, 2023 and September 8, 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
- 15.5%
- Water stored
- 39 hm³
- Total capacity
- 254 hm³
- Usable capacity
- 239 hm³
- 7-day change
- ▲ 2.0 pts
- Year-on-year
- ▼ 7.6 pts
- 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
- September 8, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 8 Sep 2026 | 15.5% | 39 |
| 7 Sep 2026 | 15.0% | 38 |
| 6 Sep 2026 | 14.0% | 36 |
| 5 Sep 2026 | 13.2% | 34 |
| 4 Sep 2026 | 13.3% | 34 |
| 3 Sep 2026 | 13.3% | 34 |
| 2 Sep 2026 | 13.3% | 34 |
| 1 Sep 2026 | 13.5% | 34 |
| 31 Aug 2026 | 13.6% | 35 |
| 30 Aug 2026 | 13.7% | 35 |
| 29 Aug 2026 | 13.6% | 35 |
| 28 Aug 2026 | 13.4% | 34 |