Reservoir · South Australia · Australia · BOM Water Data Online
Lock 3 - Overland Corner
74.0% full
Capacity
50.5 hm³
Volume stored
37 hm³
River
River Murray
Year completed
1925
Coordinates
34.192°S, 140.362°E
Last updated
2026-10-26
Current fill
74.0%vs 7 days ago
0.0 ppstable
vs 1 year ago
0.0 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
101%of normal
74.0% full on 2026-10-26, against an average of 73.6% for October across 4 years of readings (+0.4 points).
Rain over the last three months · 11 October 2026
Moderately wet
In the three months to 11 October 2026 the area around Lock 3 - Overland Corner had more rain than normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +1.08). Rain, not storage. Australia drought figures →
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: 2026-10-26.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 34.192°S, 140.362°E · Open in Google Maps
About Lock 3 - Overland Corner
As of October 26, 2026, Lock 3 - Overland Corner is filled to 74.0% of its total capacity, holding 37.38 hm³ of water out of a maximum 50.5 hm³. At this level the reservoir is within its normal operating range. Of that total, 36.9 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pp), 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 October 28, 2023 and October 26, 2026 — the level has ranged from a low of 71.7% (December 2, 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
- 74.0% of total capacity
- Water stored
- 37.38 hm³
- Total capacity
- 50.5 hm³
- Usable capacity
- 36.9 hm³
- 7-day change
- No change
- Year-on-year
- No change
- 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
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 74.0% | 37.38 |
| 25 Oct 2026 | 73.4% | 37.09 |
| 24 Oct 2026 | 72.9% | 36.86 |
| 23 Oct 2026 | 72.7% | 36.73 |
| 22 Oct 2026 | 72.8% | 36.81 |
| 21 Oct 2026 | 73.4% | 37.1 |
| 20 Oct 2026 | 73.9% | 37.35 |
| 19 Oct 2026 | 74.0% | 37.4 |
| 18 Oct 2026 | 74.0% | 37.4 |
| 17 Oct 2026 | 74.0% | 37.38 |
| 16 Oct 2026 | 73.5% | 37.12 |
| 15 Oct 2026 | 73.1% | 36.95 |