Tidal Anomalies for New South Wales Coast, Adjusted to Australian Height Datum

Hourly and 15-minute ocean water levels from the New South Wales coast, adjusted to the vertical Australian Height Datum (AHD) with rainfall-related peaks removed. This high-quality set of tidal residuals, representing the difference between observed and predicted water levels, was compiled by the Manly Hydraulics Laboratory and the Australian Bureau of Meteorology. The dataset is maintained in perpetuity by the Australian Ocean Data Network and accompanies a data descriptor paper.

Use Cases

• Modeling coastal flooding and inundation based on tidal anomaly time-series data.
• Analyzing long-term sea-level trends based on datum-adjusted water level records.
• Validating tidal prediction models based on residuals calculated using the Unified Tidal Analysis and Prediction model (Utide).
• Studying the impact of rainfall on coastal water levels based on records from onshore river entrance gauges.

Strengths

• Data is adjusted to a consistent vertical datum (Australian Height Datum), enhancing comparability across locations.
• Rainfall-related peaks have been removed from onshore river entrance gauge records, improving signal quality for tidal analysis.
• The dataset is associated with a data descriptor paper and has a DOI, indicating formal publication and citation.
• Data is maintained in perpetuity by the Australian Ocean Data Network, suggesting long-term availability.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale machine learning tasks.
• Data may reflect geographic bias inherent to data_gov_au, focusing solely on the New South Wales coast.

Provenance

Source

Manly Hydraulics Laboratory (MHL) and Australian Bureau of Meteorology (BOM).

Collection Method

Collected from coastal tide gauges (onshore bay, onshore river entrance, offshore open ocean) and processed using the Unified Tidal Analysis and Prediction model (Utide).

Freshness

Last updated 2026-07-16 02:48:36.336620; freshness should be verified.

Geography

New South Wales (NSW) coast, Australia.