In this issue



   - Poll




-  Flood Mitigation



Sediment and Erosion Control

-  Example



Wrap Up

   - See you next month



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Hello everyone and welcome to the April edition of “Keep Things Flowing”, the monthly newsletter presented by Storm Water Consulting.

In this month’s newsletter we bring you information about a flood mitigation product and we look at an example of poor sediment and erosion control on a development. Let’s begin this month’s newsletter with a poll question!

The Poll Questions Is:

What would you like to read more about in our monthly newsletters?

You can select your answer directly from the polling option on outlook.


Sand bagging a property for protection from flood water is often a time consuming and labour intensive job. Sand bagging also requires advance notice of an impending flood event so that sand bags can be prepared and stacked in a protective arrangement.

We were recently informed about a product that could be stored on a property with minimal storage space, could be set up in a matter of minutes and claims to perform in the same manner as a traditional sand bag. The “FloodSax Instant Sandbag” is a sand less sand bag filled with hundreds of absorbent crystals that absorb water and form a protective barrier much like a traditional sand bag. Each FloodSax is biodegradable and environmentally safe, weighs approximately 200g and can absorb up to 22L of water.

This item could be great to use on properties that experience inundation during heavy or prolonged rainfall events as the setup time is significantly reduced compared to a traditional sandbag barrier. There is obviously a downside to this solution, the cost.

Further information about the FloodSax product can be viewed on the FloodSax website using the link below:

Sediment and Erosion Control

Soil erosion from a building or construction site is a major source of stormwater pollution. Once sediment laden stormwater enters a waterway it can cause both short term and long term environmental impacts. It is for this reason that all construction and building sites are required (under the Sustainable Planning Act 2009) to implement adequate sediment and erosion control measures. Earlier this month during Brisbane’s significant rainfall event caused by Ex Tropical Cyclone Debbie, we witnessed sediment laden runoff entering a relatively clean flow path. We took the time to explore upstream to determine the cause of the polluted runoff. The photo presented below shows the polluted runoff entering a relatively clean flow path. Notice the dirty water from the top of the photo entering the clear water at the bottom of the photo.

Photo 1 – Sediment laden runoff entering the flow path.

We then searcher upstream to find the cause of the polluted runoff. We took a video of the stormwater in the kerb and channel as it flowed towards the flow path shown in Photo 1.Click the picture below to play the video.

Video 1 – Poor Sediment and Erosion Control.

The polluted runoff came from several construction sites. Brisbane City Council investigates water pollution resulting from the release of sediment from a building or construction site. If appropriate sediment and erosion control measures are not implemented Council may issue on the spot fines.

Wrap Up

We hope you enjoyed this edition of Keep Things Flowing. Feedback on articles presented is always welcomed and for further information on any of the articles presented please don’t hesitate to contact our office.

As always, Keep Things Flowing!

The Storm Team



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