Reservoir · South Australia · Australia · BOM Water Data Online
Lock 3 - Overland Corner
74.5% full
Capacity
50.5 hm³
Volume stored
38 hm³
River
River Murray
Year completed
1925
Coordinates
34.192°S, 140.362°E
Last updated
2026-07-28
Current fill
74.5%vs 7 days ago
0.0%stable
vs 1 year ago
+0.6%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. -34.192, 140.362 · Open in Google Maps
About Lock 3 - Overland Corner
As of July 28, 2026, Lock 3 - Overland Corner is filled to 74.5% of its total capacity, holding roughly 38 hm³ of water out of a maximum 51 hm³. At this level the reservoir is within its normal operating range. Of that total, about 37 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Lock 3 - Overland Corner — 1095 data points between July 30, 2023 and July 28, 2026 — the level has ranged from a low of 71.1% (September 19, 2023) to a high of 75.9% (March 2, 2026). On average the reservoir is fullest around January and at its lowest around November.
The dam at Lock 3 - Overland Corner was completed in 1925. It is operated by BOM primarily for water supply. It lies within the River Murray Basin basin at 34.192°S, 140.362°E.
Key facts
- Current fill level
- 74.5%
- Water stored
- 38 hm³
- Total capacity
- 51 hm³
- Usable capacity
- 37 hm³
- 7-day change
- No change
- Year-on-year
- ▲ 0.6 pts
- Primary use
- Water supply
- River
- River Murray
- River basin
- River Murray Basin
- Year completed
- 1925
- Operator
- BOM
- Coordinates
- 34.192°S, 140.362°E
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 74.5% | 38 |
| 27 Jul 2026 | 74.5% | 38 |
| 26 Jul 2026 | 74.3% | 38 |
| 25 Jul 2026 | 74.2% | 38 |
| 24 Jul 2026 | 74.1% | 37 |
| 23 Jul 2026 | 73.9% | 37 |
| 22 Jul 2026 | 74.0% | 37 |
| 21 Jul 2026 | 73.8% | 37 |
| 20 Jul 2026 | 73.8% | 37 |
| 19 Jul 2026 | 73.8% | 37 |
| 18 Jul 2026 | 74.0% | 37 |
| 17 Jul 2026 | 74.6% | 38 |
Frequently asked questions
What is the current water level of Lock 3 - Overland Corner?
As of July 28, 2026, Lock 3 - Overland Corner is at 74.5% of its capacity, holding approximately 38 hm³ of water, according to BOM data.
Is Lock 3 - Overland Corner reservoir full?
No. As of July 28, 2026, Lock 3 - Overland Corner is within its normal operating range at 74.5% of its capacity, so it is not full.
Is the water level at Lock 3 - Overland Corner rising or falling?
The level at Lock 3 - Overland Corner has been broadly stable over the latest week on record (0.0 points).
How much water can Lock 3 - Overland Corner hold?
Lock 3 - Overland Corner has a total capacity of 51 hm³, of which about 37 hm³ is usable storage.
Where is Lock 3 - Overland Corner reservoir located?
Lock 3 - Overland Corner is located in South Australia, Australia, within the River Murray Basin basin (coordinates 34.192°S, 140.362°E).
When was Lock 3 - Overland Corner dam built?
The dam at Lock 3 - Overland Corner was completed in 1925.
What is Lock 3 - Overland Corner used for?
Lock 3 - Overland Corner is used primarily for water supply, and is managed by BOM.