North Esk River Flood Water Surface Profiles for Planning

A collection of flood water surface profiles for the North Esk River from Black Bridge to Corra Linn, 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 Interval (ARI) events, with specific discharge values such as 614 cumecs for a 100-year ARI. The data is intended for planning purposes and was calibrated against historical floods from 2005 and 2011.

Use Cases

• Model flood inundation extents for the North Esk River using the provided 100-year and 200-year ARI water surface profiles.
• Assess planning scenarios by comparing flood levels under current sea level conditions versus an 800mm sea level rise, as specified in the dataset description.
• Calibrate hydraulic models using the documented discharge values, such as the 614 cumecs for a 100-year ARI or the 470 cumecs peak from the 2005 flood event.
• Analyze flood risk by correlating specific Average Recurrence Interval (ARI) values, like 10, 20, 50, 100, and 500 years, with their corresponding North Esk discharge rates.

Strengths

• Includes specific, peer-reviewed discharge values for multiple flood return periods (e.g., 614 cumecs for 100-year ARI).
• Hydrology derived by the University of New South Wales Water Research Laboratory, indicating a research-based methodology.
• Model calibration against two recorded historical flood events (2005 and 2011), providing empirical validation.
• Provides profiles for both current sea level and a projected 800mm sea level rise scenario for planning.

Limitations

• Spatial coverage is limited to the North Esk River from Black Bridge to Corra Linn and the Tamar River confluence.
• The underlying hydrology studies for the North and South Esk rivers were conducted in 2006 and 2008, which may not reflect current climatic conditions.
• Data format and structure are unclear as specific columns and sample data are unavailable.

Provenance

Source

City of Launceston Open Data, authored by lccspatial.

Collection Method

Hydrology derived by University of New South Wales Water Research Laboratory (North Esk, 2006) and reviewed by Hydro Consulting (South Esk, 2008); hydraulic modeling calibrated to 2005 and 2011 flood events.

Time Range

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

Freshness

Last updated metadata indicates 2026-03-20, but the core hydrological studies date from 2006 and 2008.

Geography

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