Great Cumbung Swamp Geomorphology and Hydrology of the Lachlan River Terminus

A dataset from the Australian Ocean Data Network describes the geomorphology and hydrology of the Great Cumbung Swamp, the terminal wetland of the low-gradient Lachlan River in eastern Australia. The description details three distinct depositional environments: the sinuous Lachlan channel, the extensive Phragmites marsh, and surrounding overflow areas. It was last updated on 2026-06-05.

Use Cases

• Modeling low-gradient river termination processes based on described channel morphology and sediment deposition.
• Classifying wetland depositional environments based on the described three-part division of the swamp.
• Studying floodplain hydrology and salt balance based on described mechanisms of water loss and infiltration.
• Identifying ancient fluvial analogues based on the described fine-grained sediment characteristics.

Strengths

• Detailed descriptive metadata covering specific geomorphic features like channel widths up to 40 m and water depths less than 0.75 m.
• Provides a specific example of a rare river termination style without distributaries or large lakes.
• Includes temporal context, noting floods occur in 15-20% of years.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to data_gov_au, focusing on a single Australian wetland.

Provenance

Source

Australian Ocean Data Network via data_gov_au

Freshness

Last updated 2026-06-05 07:10:27.898179; freshness should be verified.

Geography

Great Cumbung Swamp, terminus of the Lachlan River, Eastern Australia