North Esk and Tamar River Flood Water Surface Profiles

Flood water surface profiles for the North Esk and Tamar rivers in Tasmania, Australia. It includes profiles for 100-year and 200-year Average Recurrence Interval (ARI) flood events, with discharges derived from hydrological studies by the University of New South Wales Water Research Laboratory and Hydro Consulting. The data is intended for planning purposes and includes scenarios with current and projected sea level rise.

Use Cases

• Compare 100-year ARI flood profiles under current sea level conditions versus an 800mm sea level rise scenario for infrastructure planning.
• Analyze the relationship between North Esk flood discharges and South Esk discharges for the same ARI to understand combined flood risk in the Tamar River.
• Use the calibrated North Esk model, validated against the 2005 (470 cumecs) and 2011 (251 cumecs) flood events, for flood simulation and prediction.
• Map flood levels from Black Bridge to Corra Linn on the North Esk River for land-use zoning and emergency management.

Strengths

• Includes specific flood discharge values for multiple Average Recurrence Intervals (e.g., 10-year, 20-year, 50-year, 100-year, 500-year).
• Hydrological models were calibrated against two recorded historical flood events (2005 and 2011).
• Data is provided in multiple geospatial formats (GEOJSON, KML, CSV) for interoperability.

Limitations

• The spatial coverage is limited to specific river reaches (North Esk from Black Bridge to Corra Linn and the Tamar River near Launceston).
• The adopted tail-water level for the North Esk analysis is a fixed value (2.1 m AHD), which may not account for all tidal and meteorological variations.
• Sample data and row/column counts are unavailable, making initial data assessment difficult.

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 (2006) and Hydro Consulting (2008).

Time Range

Hydrological studies reference data from 2006 and 2008; model calibration uses flood events from 2005 and 2011.

Freshness

Last updated on 2026-03-20.

Geography

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