Lesson Plan2

Impacts on Moreton Bay due to flooding

Firslty we will look at the Brisbane floods and study the impact they had on Moreton Bay and then discuss the likely impacts that the flooding of the Ovens and King rivers can have on our local natural and human environments.

Learning Intention

The intention of this activity is to gain an overview of some of the issues Moreton Bay faces. You will be introduced to some of the key ideas in the unit, including ecosystems and impacts.


Watch the video and answer the questions below.

Video link: http://www.abc.net.au/catalyst/stories/3480317.htm (8 minutes long)

  1. What issue is this video focusing on?
  1. It is estimated that, during pre-European times, the Brisbane River carried twenty thousand tonnes of mud to Moreton Bay. What is the figure today, and how much was estimated to have been carried in these Brisbane floods?
  1. What changes have occurred in the last century that may account for these patterns?
  1. How different is the ecosystem on the eastern side of the bay to the western side?
  1. What impacts did scientists/ecologists expect to see in Moreton Bay?
  1. Why is seagrass important?
  1. How does flooding effect seagrasses?
  1. How do they test the seagrass for impacts?
  1. What did the scientists/ecologists find?
  1. How else have the scientists/ecologists been testing the health of Moreton Bay and what did they find?
  1. Why do the scientists/ecologists think that the eastern side of the bay suffered more than the western side?

THINK: If there was another flood event next year, do you think Moreton Bay would fare as well?

THINK: What do you think would happen to the ecosystem if there was a negative impact on seagrasses?

THINK: Wangaratta and the surrounding area is prone to flooding, what are the positive and negative that the flooding can have on our natural and build environments? Think back to the Rivers topic in Unit 1 and our study of Docklands.