Reservoir · New South Wales · Australia · BOM Water Data Online
Lake Cawndilla
33.5% full
Capacity
631.1 hm³
Volume stored
211 hm³
Coordinates
32.473°S, 142.228°E
Last updated
2026-07-28
Current fill
33.5%vs 7 days ago
+0.1%gaining
vs 1 year ago
+0.1%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. -32.473, 142.228 · Open in Google Maps
About Lake Cawndilla
As of July 28, 2026, Lake Cawndilla is filled to 33.5% of its total capacity, holding roughly 211 hm³ of water out of a maximum 631 hm³. At this level the reservoir is low. Of that total, about 545 hm³ is usable (live) storage.
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 Lake Cawndilla — 1095 data points between July 30, 2023 and July 28, 2026 — the level has ranged from a low of 23.5% (April 21, 2025) to a high of 87.2% (September 29, 2025). On average the reservoir is fullest around September and at its lowest around April.
It is operated by BOM primarily for water supply.
Key facts
- Current fill level
- 33.5%
- Water stored
- 211 hm³
- Total capacity
- 631 hm³
- Usable capacity
- 545 hm³
- 7-day change
- ▲ 0.1 pts
- Year-on-year
- ▲ 0.1 pts
- Primary use
- Water supply
- Operator
- BOM
- Coordinates
- 32.473°S, 142.228°E
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 33.5% | 211 |
| 27 Jul 2026 | 33.4% | 211 |
| 26 Jul 2026 | 33.4% | 211 |
| 25 Jul 2026 | 33.4% | 211 |
| 24 Jul 2026 | 33.4% | 211 |
| 23 Jul 2026 | 33.4% | 211 |
| 22 Jul 2026 | 33.5% | 212 |
| 21 Jul 2026 | 33.6% | 212 |
| 20 Jul 2026 | 33.6% | 212 |
| 19 Jul 2026 | 33.5% | 212 |
| 18 Jul 2026 | 33.6% | 212 |
| 17 Jul 2026 | 33.6% | 212 |
Frequently asked questions
What is the current water level of Lake Cawndilla?
As of July 28, 2026, Lake Cawndilla is at 33.5% of its capacity, holding approximately 211 hm³ of water, according to BOM data.
Is Lake Cawndilla reservoir full?
No. As of July 28, 2026, Lake Cawndilla is low at 33.5% of its capacity, so it is not full.
Is the water level at Lake Cawndilla rising or falling?
The level at Lake Cawndilla has been broadly stable over the latest week on record (+0.1 points).
How much water can Lake Cawndilla hold?
Lake Cawndilla has a total capacity of 631 hm³, of which about 545 hm³ is usable storage.
Where is Lake Cawndilla reservoir located?
Lake Cawndilla is located in New South Wales, Australia (coordinates 32.473°S, 142.228°E).
What is Lake Cawndilla used for?
Lake Cawndilla is used primarily for water supply, and is managed by BOM.