Reservoir · Tasmania · Australia · BOM Water Data Online
Lake Murchison
62.6% full
Capacity
96.9 hm³
Volume stored
61 hm³
River
Murchison River
Year completed
1982
Coordinates
41.863°S, 145.740°E
Last updated
2026-07-27
Current fill
62.6%vs 7 days ago
+1.2%gaining
vs 1 year ago
+45.4%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: 2026-07-27.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -41.863, 145.740 · Open in Google Maps
About Lake Murchison
As of July 27, 2026, Lake Murchison is filled to 62.6% of its total capacity, holding roughly 61 hm³ of water out of a maximum 97 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (+1.2 pts), and it is 45.4 points above its level on the same date a year earlier.
Across the readings we hold for Lake Murchison — 1094 data points between July 30, 2023 and July 27, 2026 — the level has ranged from a low of 6.0% (June 16, 2025) to a high of 75.4% (September 2, 2024). On average the reservoir is fullest around September and at its lowest around May.
The dam at Lake Murchison was completed in 1982. It is operated by BOM primarily for water supply. It lies within the Murchison River Basin basin at 41.863°S, 145.740°E.
Key facts
- Current fill level
- 62.6%
- Water stored
- 61 hm³
- Total capacity
- 97 hm³
- 7-day change
- ▲ 1.2 pts
- Year-on-year
- ▲ 45.4 pts
- Primary use
- Water supply
- River
- Murchison River
- River basin
- Murchison River Basin
- Year completed
- 1982
- Operator
- BOM
- Coordinates
- 41.863°S, 145.740°E
- Last updated
- July 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Jul 2026 | 62.6% | 61 |
| 26 Jul 2026 | 61.4% | 59 |
| 25 Jul 2026 | 50.4% | 49 |
| 24 Jul 2026 | 30.5% | 30 |
| 23 Jul 2026 | 26.4% | 26 |
| 22 Jul 2026 | 20.5% | 20 |
| 21 Jul 2026 | 18.6% | 18 |
| 20 Jul 2026 | 21.1% | 20 |
| 19 Jul 2026 | 24.2% | 23 |
| 18 Jul 2026 | 27.9% | 27 |
| 17 Jul 2026 | 33.2% | 32 |
| 16 Jul 2026 | 36.3% | 35 |
Frequently asked questions
What is the current water level of Lake Murchison?
As of July 27, 2026, Lake Murchison is at 62.6% of its capacity, holding approximately 61 hm³ of water, according to BOM data.
Is Lake Murchison reservoir full?
No. As of July 27, 2026, Lake Murchison is within its normal operating range at 62.6% of its capacity, so it is not full.
Is the water level at Lake Murchison rising or falling?
The level at Lake Murchison has been broadly stable over the latest week on record (+1.2 points).
How much water can Lake Murchison hold?
Lake Murchison has a total capacity of 97 hm³.
Where is Lake Murchison reservoir located?
Lake Murchison is located in Tasmania, Australia, within the Murchison River Basin basin (coordinates 41.863°S, 145.740°E).
When was Lake Murchison dam built?
The dam at Lake Murchison was completed in 1982.
What is Lake Murchison used for?
Lake Murchison is used primarily for water supply, and is managed by BOM.