Shepparton Mooroopna 1% AEP Flood Mapping Project 2021

Background

The purpose of the Shepparton Mooroopna Flood Mapping and Flood Intelligence Project Report March 2019 (Intelligence Project) is to update the flood intelligence and mapping tools contained within the existing Shepparton Mooroopna Floodplain Management Study: Floodplain Management Plan October 2002. The Intelligence Project was funded by the Australian and Victorians governments, and Council. It updated the existing information on flood risk within the Shepparton-Mooroopna area. The project involved detailed hydrological and hydraulic modelling of the Goulburn River, Seven Creeks and the Broken River, producing flood mapping and flood intelligence information.

In line with State and regional flood strategies, a priority outcome of the project was to share the updated flood mapping and intelligence information with stakeholders and the wider community. The Intelligence Project:

  • collects and reviews data relevant to flooding within the study area;
  • provides best practice hydrological flood estimates for the study area;
  • develops and calibrates a detailed hydraulic model that can replicate past floods and predict impacts across the complex floodplain for a range of flood magnitudes;
  • provides flood mapping of many potential design flood scenarios;
  • develops an online flood mapping portal;
  • quantifies flood risk at a property specific level; and
  • reviews flood warning and emergency response, and an update to the Greater Shepparton Municipal Flood Emergency Plan.

At the Ordinary Council Meeting held on 18 September 2018, Council resolved to release a draft Intelligence Project for public comment in late 2018.

At the Ordinary Council Meeting held on 19 March 2019, Council resolved to adopt the Intelligence Project; to prepare and exhibit a planning scheme amendment to include the findings and recommendations of the Intelligence Project in the Greater Shepparton Planning Scheme; and adopt the Greater Shepparton City Council Municipal Flood Emergency Plan August 2018.

At the Ordinary Council Meeting held on 15 February 2022, Council resolved to adopt the Shepparton Mooroopna 1% AEP Flood Mapping Project Report August 2021 (Flood Mapping Project), and to prepare and exhibit a planning scheme amendment to include the findings and recommendations of the Flood Mapping Project in the Greater Shepparton Planning Scheme.

The Flood Mapping Project involved updating the previous model, including the use of the latest model software, and including changes to topographic features (particularly new ground LiDAR) and hydraulic structures within the floodplain, following the completion of the modelling used in the Intelligence Project.

The updated modelling can now inform revised flood mapping for the study area (Land Subject to Inundation Overlay, Floodway Overlay and Urban Floodway Zone) that will then be implemented in the Greater Shepparton Planning Scheme via a proposed planning scheme amendment. This will ensure that appropriate flood controls are applied to land to guide development that safeguards flood prone land from inappropriate development.

The revised flood mapping has taken into account impacts of climate change

Next Steps

A planning scheme amendment is required to implement the findings and recommendations of the Flood Mapping Project. Further consultation will be undertaken as part of the planning scheme amendment process, in accordance with the Planning and Environment Act 1987.

The amendment is expected to be exhibited later in 2022.

You may inspect the document below:

For more information on this project please contact Council's Strategic Planning Team on 03 5832 9730.