Flood Reports and Flood Assessments for Logan City Council
Logan City Council
Logan City Council contains various greenfield and industrial areas with significant growth corridors, increasing the urban footprint as the years go by. We have contributed to a large number of development applications (DA) and building applications (BA) within these areas and development types of the following: acerage and urban subdivisions, industrial warehouses and depots, commercial buildings and more.
Logan City Council Planning Scheme
Logan City Council requires flood assessments when located in the Flood Hazard overlays:
Flood assessment area
Isolated islands
High flow area
Flood risk areas
Flood investigation area
These overlays are used as triggers for assessment against the respective overlay codes as part of Logan City Council’s Planning Scheme.
The following interactive map displays all the overlays your property may be affected by: Logan Planning Scheme 2015 ePlan
Steps to Follow
The following steps will assist you in identifying the flood overlays affecting your property:
Go to Logan City Council’s Logan Planning Scheme 2015 ePlan
Search for your property address
In ‘Map Tools’ (right side of the website), click ‘OM-05 Flood Hazard Overlay (TLPI No 1/2024)’
Filter through the Flood Hazard overlays
The screenshot below shows the Logan City Council Planning Scheme 2015 ePlan (Interactive mapping system).
Logan City Council Planning Scheme 2015 ePlan (Interactive Mapping System)
Logan City Council Property Flood Report
Logan City Council provides property flood reports including the following:
Applicable flood overlays
Sources of flooding/inundation
Flood level data
Historic flooding extents
Future climate flooding
Ground level estiamtes
The flood levels in these reports are used to set minimum floor/design levels. Please note that these reports do not provide overland flow levels.
Steps to Follow
The following steps will assist you in retrieving a Property Flood Report:
Go to Logan City Council’s Logan Flood Portal
Search for your property address
A property summary will pop up (if not click on your poperty)
Click ‘Property Flood Report’ within the pop up
A new tab will open with the report, ready for download
The screenshot below shows the Logan City Council Logan Flood Portal.
Logan City Council Logan Flood Portal
Logan City Council Logan Flood Portal
Logan City Council provides additional flood mapping, including the following:
Detailed flood and overland flow levels, depths, velocities, hazards
Sources of flooding/inundation
Logan flood study results/mapping
Catchments and contours
The Logan Flood Portal is best used to identify more detailed flooding and overland flow flood characteristics. The portal also allows users to view multiple design flood events (flood scenarios).
Steps to Follow
The following steps will assist you in identifying flooding affecting your property:
Go to Logan City Council’s Logan Flood Portal
Search for your property address
Use the ‘Key Map's’ tab (on the left side of the website) to view flood risk areas, future flooding, historic flooding and more
Use the ‘Flood Models’ tab (on the left side of the website) to view specific flooding/inundation sources, scenarios and characteristics
Use the ‘All Maps’ tab (on the left side of the website) to view multiple overlays concurrently
The screenshot below shows the Logan Flood Portal ‘Flood Models’ tab being used to view the 1% AEP creek flood velocities.
Logan City Council Logan Flood Portal ‘Flood Models’
To view past and current applications in Logan City Council, visit the Development Enquiry Tool.
Visit the Logan PD Hub which provides all the online tools for planning and development within Logan City Council including property reports, mapping systems, planning schemes, fees and charges, as-constructed plans, application lodgements and more.
Types of Assessments We Provide
Flood Impact Assessments:
These assessments are required by Logan City Council to ensure that adverse flood impacts are not created which may negatively affect neighbouring properties, the surrounding area and more.
During this assessment, the construction type and location is usually determined. This may involve altering the earthworks on your property, constructing on a suspended slab or creating flood-specific pathways.
Flood Immunity Assessments:
Logan City Council requires various types of development to meet various flood immunity requirements so that floor levels are safe during overland flow and flood events.
This usually involves habitable floor levels, non-habitable floor levels, servicing levels and the ability for site occupants to traverse the site without being exposed to flood hazard.
Flood Risk Assessments:
When flooding may impact upon the ability for site occupants to traverse or evacuate a site, flood risk and flood emergency matters are to be addressed.
This usually involves evacuations plans, understanding of flood warning times, flood recovery considerations and more.
Overland flows paths are common in Logan City Council due to the various elevation changes in topography. Logan City Council does not typically provide flood data for overland flow paths. As such, it is important that overland flow assessments are undertaken through our TUFLOW hydraulic models to determine their characteristics and impact upon your property and future development.
At Flood Smart Engineering, we utilise TUFLOW hydraulic models to produce flood levels, velocities, hazards and extents for inundations sources such as overland flow. These models provide site-specific results so that we can focus on increasing development opportunity for your property and gaining council approval through the building application (BA) and development application (DA) phases.
Our experience in Logan City Council
Over the years we have worked on a large number and variety of projects in the Logan region. The most common development applications we assist with are:
Acerage/large residential subdivisions
Residential estates
Industrial warehouses and depots
Commercial buildings
Our local knowledge and expertise has contributed to our understanding of specific flooding characteristics within LoganCity Council ie. flooding from waterways such as Logan River, Quinzeh Creek, Albert River, Slacks Creek and more.
Logan Suburbs We Commonly Service
At Flood Smart Engineering, we regularly assist our clients throughout the Logan suburbs of Springwood, Beenleigh, Marsden, Bahrs Scrub, Jimboomba and many more.
FAQs
Do I need a flood assessment for my property?
1
If you are located in a flood overlay, you will most likely require a flood assessment to be undertaken. Flooding can be a complex issue and requires a keen eye to identify development opportunity. Please contact us and we can assist you with your property.
What is a Property Flood Report
2
The Property FloodReport identifies the flood overlays and flood levels affecting your property. Please note that overland flow levels are not shown on these reports; hydraulic models are to be produced to determine these levels.
Can I build in a flood ovleray?
3
Flood overlays can be built in as long as compliance with Logan City Council’s Planning Scheme is achieved. Some properties have more development potential than others.
What experience do you have in Logan City Council?
4
We are involved in a significant number of Logan City Council projects which has contributed to our local knowledge. The developments we work on range from estates to subdivisions to large industial and commercial uses.
Flood report costs vary depending upon the flooding type and complexity. Please contact us and we can prepare a formal proposal for your consideration.
A flood report is usually required for a building application (BA) or development application (DA) in Logan City Council. It is best to engage us as earlier as possible as the flooding component for a development can be crucial in determining engineering design.
How much does a flood report cost?
5
When do I need a flood report?
6
Logan City Council requires developments to meet flood immunity requirements. To be flood immune is to be free of/not affected by flooding for a given design flood event. The requirements generally include freeboard (an additional margin/height above the applicable flood level) to ensure adequate safety and consideration to design components.
What is flood immunity?
7
View the other councils we reguarly work in.