North Esk and Tamar River Flood Water Surface Profiles

Encompassing flood water surface profiles for the North Esk and Tamar rivers in Tasmania, Australia, derived from hydrological studies. It includes profiles for 100-year and 200-year Average Recurrence Interval (ARI) flood events, with discharges calibrated to historical floods from 2005 and 2011. The data is intended for planning purposes and includes scenarios with current sea levels and an 800mm sea level rise.

Use Cases

• Model flood inundation extents for the North Esk River using the 100-year ARI profile with current sea level conditions.
• Assess the impact of sea level rise on flood levels by comparing the 100-year ARI profile with an 800mm rise against the baseline profile.
• Analyze the relationship between flood return periods (ARI) and corresponding North Esk flood discharges from the provided hydrological table.
• Calibrate hydraulic models using the successfully calibrated peak discharges from the 2005 (470 cumecs) and 2011 (251 cumecs) flood events.

Strengths

• Includes specific flood discharge values for calibration, such as the 470 cumecs peak from the 2005 flood.
• Provides profiles for multiple defined scenarios: 100-year ARI, 200-year ARI, and a 100-year ARI with 800mm sea level rise.
• Hydrology derived from commissioned studies by Hydro Consulting (South Esk) and the University of New South Wales Water Research Laboratory (North Esk).

Limitations

• The spatial coverage is limited to the North Esk River from Black Bridge to Corra Linn and the Tamar River confluence.
• The dataset's core hydrological studies date from 2006 and 2008, which may not reflect recent climatic or land-use changes.
• The sample data and specific column structure are unavailable, limiting understanding of the data's granular format.

Provenance

Source

City of Launceston Open Data, authored by lccspatial.

Collection Method

Hydrological modeling and flood profile construction based on studies by Hydro Consulting and the University of New South Wales Water Research Laboratory.

Time Range

Hydrological studies from 2006 and 2008; model calibration includes floods from 2005 and 2011.

Freshness

The metadata indicates a last update in March 2026, but the underlying hydrological studies are from 2006-2008.

Geography

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