Reservoir · Tasmania · Australia · BOM Water Data Online
Tungatinah Lagoon
18.7% full
Capacity
102.6 hm³
Volume stored
19 hm³
River
Nive Marsh Rivulet
Year completed
1952
Coordinates
42.277°S, 146.468°E
Last updated
2026-10-26
Current fill
18.7%vs 7 days ago
+0.2 ppgaining
vs 1 year ago
-22.7 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
57%of normal
18.7% full on 2026-10-26, against an average of 32.6% for October across 4 years of readings (-13.9 points).
Rain over the last three months · 11 October 2026
Moderately dry
In the three months to 11 October 2026 the area around Tungatinah Lagoon had well below normal rain, a shortfall seen about one year in six. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −1.41). 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. 42.277°S, 146.468°E · Open in Google Maps
About Tungatinah Lagoon
As of October 26, 2026, Tungatinah Lagoon is filled to 18.7% of its total capacity, holding 19.14 hm³ of water out of a maximum 102.6 hm³. At this level the reservoir is critically low. Of that total, 44.4 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.2 pp), and it is 22.7 points below its level on the same date a year earlier.
Across the readings we hold for Tungatinah Lagoon — 1095 data points between October 28, 2023 and October 26, 2026 — the level has ranged from a low of 0.7% (February 21, 2024) to a high of 42.5% (October 28, 2025). On average the reservoir is fullest around October and at its lowest around March.
The dam at Tungatinah Lagoon was completed in 1952. It is operated by BOM primarily for water supply. It lies within the Nive Marsh Rivulet Basin basin at 42.277°S, 146.468°E.
Key facts
- Current fill level
- 18.7% of total capacity
- Water stored
- 19.14 hm³
- Total capacity
- 102.6 hm³
- Usable capacity
- 44.4 hm³
- 7-day change
- ▲ 0.2 pp
- Year-on-year
- ▼ 22.7 pp
- Primary use
- Water supply
- River
- Nive Marsh Rivulet
- River basin
- Nive Marsh Rivulet Basin
- Year completed
- 1952
- Operator
- BOM
- Coordinates
- 42.277°S, 146.468°E
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 18.7% | 19.14 |
| 25 Oct 2026 | 18.6% | 19.1 |
| 24 Oct 2026 | 18.5% | 18.97 |
| 23 Oct 2026 | 18.5% | 19.01 |
| 22 Oct 2026 | 18.6% | 19.04 |
| 21 Oct 2026 | 18.5% | 19.01 |
| 20 Oct 2026 | 18.5% | 19.02 |
| 19 Oct 2026 | 18.5% | 19.01 |
| 18 Oct 2026 | 18.5% | 18.97 |
| 17 Oct 2026 | 18.5% | 18.94 |
| 16 Oct 2026 | 18.4% | 18.88 |
| 15 Oct 2026 | 18.3% | 18.79 |