Daily 1 km Surface Flow for Great Barrier Reef Catchments, 2007-2023

Hourly, 1 km resolution modelled surface flow rates from 1 Jan 2007 to 31 Dec 2023 for catchments draining to the Great Barrier Reef. The dataset was generated using the Grid-to-Grid hydrological model configured by the Bureau of Meteorology and the UK Centre for Ecology & Hydrology. It provides consistent freshwater discharge inputs for 69 river mouths to drive eReefs hydrodynamic models.

Use Cases

• Modeling freshwater discharge inputs for hydrodynamic and biogeochemical models based on the 69 specified river mouths.
• Tracing and visualizing regional contributions to flood plumes based on the modelled surface flow grids.
• Estimating water runoff across ungauged land areas, which cover about 22% (~76,000 km²) of the catchment.
• Analyzing hourly flow dynamics from 2007 to 2023 based on blended rainfall and evapotranspiration data.

Strengths

• Covers a 17-year time range from 1 Jan 2007 to 31 Dec 2023.
• Provides high-resolution (0.01°, ~1 km) hourly data.
• Integrates observed stream flows from 317 streamflow gauges with modelled estimates.
• Addresses data gaps for an ungauged land area of approximately 76,000 km².

Limitations

• The model was tuned for generating correct river mouth flow rates, not flow rates far from the coast.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network, Bureau of Meteorology (BOM), UK Centre for Ecology & Hydrology (UKCEH).

Collection Method

Generated with the Grid-to-Grid (G2G) distributed hydrological model using blended gridded rainfall, potential evapotranspiration, and mapped landscape data.

Time Range

2007-01-01 to 2023-12-31

Freshness

Last updated 2026-06-04 05:54:53.776148; freshness should be verified.

Geography

Catchments draining to the Great Barrier Reef.