Reservoir · Tasmania · Australia · BOM Water Data Online
Dee Lagoon
0.7% full
Capacity
41.9 hm³
Volume stored
0 hm³
River
Dee River
Year completed
1956
Coordinates
42.271°S, 146.605°E
Last updated
2026-09-07
Current fill
0.7%vs 7 days ago
+0.1%gaining
vs 1 year ago
-0.4%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: 2026-09-07.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -42.271, 146.605 · Open in Google Maps
About Dee Lagoon
As of September 7, 2026, Dee Lagoon is filled to 0.7% of its total capacity, holding roughly 0 hm³ of water out of a maximum 42 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has held broadly steady (+0.1 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Dee Lagoon — 1083 data points between September 10, 2023 and September 7, 2026 — the level has ranged from a low of 0.0% (December 6, 2023) to a high of 3.7% (January 8, 2024). On average the reservoir is fullest around March and at its lowest around November.
The dam at Dee Lagoon was completed in 1956. It is operated by BOM primarily for water supply. It lies within the Dee River Basin basin at 42.271°S, 146.605°E.
Key facts
- Current fill level
- 0.7%
- Water stored
- 0 hm³
- Total capacity
- 42 hm³
- 7-day change
- ▲ 0.1 pts
- Year-on-year
- ▼ 0.4 pts
- Primary use
- Water supply
- River
- Dee River
- River basin
- Dee River Basin
- Year completed
- 1956
- Operator
- BOM
- Coordinates
- 42.271°S, 146.605°E
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Sep 2026 | 0.7% | 0 |
| 6 Sep 2026 | 0.7% | 0 |
| 5 Sep 2026 | 0.7% | 0 |
| 4 Sep 2026 | 0.6% | 0 |
| 3 Sep 2026 | 0.6% | 0 |
| 2 Sep 2026 | 0.5% | 0 |
| 1 Sep 2026 | 0.5% | 0 |
| 31 Aug 2026 | 0.6% | 0 |
| 30 Aug 2026 | 0.7% | 0 |
| 29 Aug 2026 | 0.9% | 0 |
| 28 Aug 2026 | 1.3% | 1 |
| 27 Aug 2026 | 1.9% | 1 |