Lock 3 - Overland Corner

As of September 8, 2026, Lock 3 - Overland Corner is filled to 72.6% of its total capacity, holding roughly 37 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 fallen by 2.1 percentage points, and it is 1.0 points below its level on the same date a year earlier.

Across the readings we hold for Lock 3 - Overland Corner — 1095 data points between September 10, 2023 and September 8, 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.