Reservoir · Tasmania · Australia · BOM Water Data Online
Lake Catagunya
12.3% full
Capacity
25.6 hm³
Volume stored
3 hm³
River
Derwent River
Year completed
1962
Coordinates
42.438°S, 146.562°E
Last updated
2026-07-28
Current fill
12.3%vs 7 days ago
-1.3%losing
vs 1 year ago
+4.9%year-over-year
7-day trend
→stable
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: 2026-07-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -42.438, 146.562 · Open in Google Maps
About Lake Catagunya
As of July 28, 2026, Lake Catagunya is filled to 12.3% of its total capacity, holding roughly 3 hm³ of water out of a maximum 26 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has held broadly steady (-1.3 pts), and it is 4.9 points above its level on the same date a year earlier.
Across the readings we hold for Lake Catagunya — 1091 data points between July 30, 2023 and July 28, 2026 — the level has ranged from a low of 0.8% (December 3, 2024) to a high of 29.0% (September 2, 2024). On average the reservoir is fullest around September and at its lowest around July.
The dam at Lake Catagunya was completed in 1962. It is operated by BOM primarily for water supply. It lies within the Derwent River Basin basin at 42.438°S, 146.562°E.
Key facts
- Current fill level
- 12.3%
- Water stored
- 3 hm³
- Total capacity
- 26 hm³
- 7-day change
- ▼ 1.3 pts
- Year-on-year
- ▲ 4.9 pts
- Primary use
- Water supply
- River
- Derwent River
- River basin
- Derwent River Basin
- Year completed
- 1962
- Operator
- BOM
- Coordinates
- 42.438°S, 146.562°E
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 12.3% | 3 |
| 27 Jul 2026 | 13.6% | 4 |
| 26 Jul 2026 | 7.9% | 2 |
| 25 Jul 2026 | 5.1% | 1 |
| 24 Jul 2026 | 1.7% | 0 |
| 23 Jul 2026 | 2.1% | 1 |
| 22 Jul 2026 | 1.3% | 0 |
| 21 Jul 2026 | 1.6% | 0 |
| 20 Jul 2026 | 4.6% | 1 |
| 19 Jul 2026 | 8.6% | 2 |
| 18 Jul 2026 | 7.9% | 2 |
| 17 Jul 2026 | 3.4% | 1 |
Frequently asked questions
What is the current water level of Lake Catagunya?
As of July 28, 2026, Lake Catagunya is at 12.3% of its capacity, holding approximately 3 hm³ of water, according to BOM data.
Is Lake Catagunya reservoir full?
No. As of July 28, 2026, Lake Catagunya is critically low at 12.3% of its capacity, so it is not full.
Is the water level at Lake Catagunya rising or falling?
The level at Lake Catagunya has been broadly stable over the latest week on record (-1.3 points).
How much water can Lake Catagunya hold?
Lake Catagunya has a total capacity of 26 hm³.
Where is Lake Catagunya reservoir located?
Lake Catagunya is located in Tasmania, Australia, within the Derwent River Basin basin (coordinates 42.438°S, 146.562°E).
When was Lake Catagunya dam built?
The dam at Lake Catagunya was completed in 1962.
What is Lake Catagunya used for?
Lake Catagunya is used primarily for water supply, and is managed by BOM.