North Esk River Flood Profiles and Discharge Data

Flood water surface profiles and discharge rates for the North Esk River in Tasmania, derived from hydrological studies conducted in 2006 and 2008. It includes modeled profiles for 100-year and 200-year Average Recurrence Interval (ARI) events, with specific discharge values such as 710 cumecs. The data was calibrated against recorded floods from 2005 (470 cumecs) and 2011 (251 cumecs).

Use Cases

• Model flood inundation extents for the North Esk River using the provided 100-year and 200-year ARI water surface profiles.
• Analyze the relationship between Average Recurrence Interval (ARI) and corresponding North Esk Flood Discharges, such as 710 cumecs for a 100-year event.
• Calibrate or validate hydrological models using the recorded peak discharges from 2005 (470 cumecs) and 2011 (251 cumecs).
• Assess flood risk for planning by comparing profiles under current sea levels and with an 800mm sea level rise scenario.

Strengths

• Includes specific, modeled discharge rates for key recurrence intervals, such as 710 cumecs for a 100-year ARI.
• Model calibration is based on two recorded historical flood events with known peak discharges (470 and 251 cumecs).
• Profiles account for future sea level conditions with an 800mm rise scenario.

Limitations

• The core hydrological data for the North Esk is from a 2006 study, which may not reflect recent climatic or land-use changes.
• Spatial coverage is limited to the North Esk River from Black Bridge to Corra Linn and its junction with the Tamar.
• Discharge values for the South Esk are from a separate 2008 study, creating a potential inconsistency in data sources for the full system analysis.

Provenance

Source

City of Launceston Open Data, authored by lccspatial.

Collection Method

Hydrological modeling and analysis; North Esk data derived by the University of New South Wales Water Research Laboratory (2006), South Esk data reviewed by Hydro Consulting (2008).

Time Range

Hydrological study periods are 2006 and 2008; calibration uses flood events from 2005 and 2011.

Freshness

The dataset metadata was last updated in March 2026, but the underlying hydrological studies are from 2006 and 2008.

Geography

North Esk River, Tasmania, Australia, from Black Bridge to Corra Linn and its junction with the Tamar River.