Flood Water Surface Profiles for North Esk and Tamar Rivers

Aggregating flood water surface profiles for the North Esk and Tamar rivers in Australia, derived from hydrology studies by the University of New South Wales Water Research Laboratory and Hydro Consulting. It includes profiles for 100-year and 200-year Average Recurrence Intervals (ARI) with different sea level conditions, and the underlying models were calibrated using flood events from 2005 and 2011.

Use Cases

• Model flood inundation extents for urban planning using the 100-year ARI profile with an 800mm sea level rise scenario.
• Analyze flood discharge relationships between the North Esk and South Esk rivers using the provided discharge tables for different ARIs.
• Calibrate hydraulic models for the North Esk River using the peak discharge data from the 2005 (470 cumecs) and 2011 (251 cumecs) flood events.
• Assess flood risk for infrastructure planning by comparing the 100-year ARI profile under current sea levels with the 200-year ARI profile.

Strengths

• Models were calibrated against two recorded flood events (2005 and 2011), providing a basis for validation.
• Includes specific flood discharge values for multiple Average Recurrence Intervals (ARI), such as 10, 20, 50, 100, and 500 years.
• Profiles account for future sea level conditions, specifically an 800mm rise scenario for the 100-year ARI.

Limitations

• The spatial coverage is limited to the North Esk River from Black Bridge to Corra Linn and the Tamar River confluence.
• The adopted tail-water level for the North Esk analysis is a fixed value (2.1 m AHD), which may not reflect all tidal or weather conditions.
• The underlying hydrology studies for the North and South Esk rivers were conducted in 2006 and 2008, respectively, and may not reflect current climatic patterns.

Provenance

Source

City of Launceston Open Data, authored by lccspatial.

Collection Method

Hydrological modeling based on studies by the University of New South Wales Water Research Laboratory (North Esk, 2006) and Hydro Consulting (South Esk, 2008).

Time Range

Hydrological studies from 2006 and 2008; model calibration used flood events from 2005 and 2011.

Freshness

The dataset metadata indicates a last update in March 2026, suggesting planned maintenance, but the core hydrological data is from studies circa 2006-2008.

Geography

North Esk River from Black Bridge to Corra Linn and the Tamar River confluence in Tasmania, Australia.