Studies modelled local creek catchments in region
ROCKHAMPTON Regional Council has begun a new venture mapping local creek catchment flood studies.
The council has released the Local Creek Catchment Flood Studies.
Mayor Margaret Strelow said council was only at the beginning of a journey and these maps would be improved over time as council established more accurate records about rain and creek flows in the region.
She said the studies modelled how local creek catchments in North Rockhampton and Gracemere were expected to respond during varying intensities and durations of rainfall events.
"This is something we have not previously investigated and the release of this information will provide input to our new Planning Scheme, assist with future land use plans, and be used to assist with council's emergency planning," Mayor Strelow said.
"We all know our region is affected by regular flooding and it was important we undertook these studies to help get a good understanding of our creek networks, as creeks in our Region have the potential to flash flood.
"The studies have been carried out within the framework of recommendations of the Queensland Flood Commission of Inquiry, have used current industry standard modelling techniques, and have been independently peer reviewed," she said.
Council has prepared Hydrologic and Hydraulic Modelling Reports for the following five urban creek catchments in North Rockhampton and four in Gracemere:
- Ramsay Creek Catchment,
- Splitters Creek Catchment,
- Moores Creek Catchment,
- Frenchmans Creek Catchment,
- Middle Creek Catchment,
- Gracemere Creek Catchment,
- Washpool, Tea Tree and Four Mile Creek Catchment, and
- The local catchment which drain under the Capricorn Highway between Gracemere and Middle Creeks.
Mayor Strelow said the modelling had allowed council to estimate the inundation extents of areas that may be flooded including the depth and hazards related to water flows.
"The mapping has allowed us to identify properties in our region that would be affected by creek catchment flooding in a range of rainfall events.
"We've sent letters to all identified properties and included information on their catchment to assist them in understanding what it means for them.
"It's important the community understands the mapping is not going to be perfect, but it's the best possible with current technology, and we really just need to start with something that's as objective and scientifically accurate as possible.
"We will refine this and be diligent whenever there's another rainfall event, come back and test our model, be willing and committed to make changes as soon as we have field-derived data to base it on, but we need something to start with.
"We have made an effort to improve rainfall data by installing rain gauges in strategic areas of the Region so that we have more accurate readings in our catchments," she said.
Council is urging those in the community to assist council in further understanding rainfall impact on our creek catchments by providing rain gauge data, photos and videos after any future rainfall events.
Mayor Strelow said council was only at the beginning of a journey and these maps would be improved over time as council established more accurate records about rain and creek flows in the region.
"Our community deserves to be aware of potential flooding impacts from creek catchments in our region and I believe that the studies we have undertaken are the best first step we can take in doing this," she said.
To view a copy of the studies and maps of identified creek catchments or to provide feedback in the register, please visit www.rockhamptonregion.qld.gov.au and click on 'Creek Catchments', under the 'Our Region' tab.