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 specific discharge values for the North Esk (e.g., 345 cumecs for 10-year ARI) and South Esk rivers. The underlying models were calibrated against historical flood events from 2005 and 2011.

Use Cases

• Model flood inundation extents using the provided 100-year and 200-year ARI water surface profiles for planning applications.
• Analyze the relationship between Average Recurrence Interval (ARI) and flood discharge values from Table 1 for hydrological risk assessment.
• Calibrate hydraulic models using the documented peak discharges from the 2005 (470 cumecs) and 2011 (251 cumecs) North Esk flood events.
• Assess the impact of sea level rise by comparing the standard 100-year ARI profile with the profile adjusted for an 800mm sea level rise.

Strengths

• Includes specific flood discharge values for multiple Average Recurrence Intervals (ARI), such as 345 cumecs for a 10-year event on the North Esk.
• Hydraulic models were calibrated against two recorded historical flood events with known peak discharges (470 cumecs in 2005, 251 cumecs in 2011).
• Profiles account for a sea level rise scenario of 800mm for long-term planning considerations.

Limitations

• The dataset's spatial coverage is limited to specific river reaches from the Black Bridge to Corra Linn on the North Esk and the Tamar River confluence.
• The underlying hydrological studies for the North and South Esk rivers were conducted in 2006 and 2008, respectively, which may not reflect current conditions.
• Sample data and specific column definitions are unavailable, limiting immediate understanding of the data structure.

Provenance

Source

City of Launceston Open Data, authored by lccspatial.

Collection Method

Hydrological studies were conducted by the University of New South Wales Water Research Laboratory (North Esk, 2006) and Hydro Consulting (South Esk, 2008), with model calibration to historical floods.

Time Range

Hydrological studies from 2006 and 2008; models calibrated to 2005 and 2011 flood events.

Freshness

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Geography

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