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Lesson 1 - Hydrological Hazards
Lesson 1 - Hydrological Hazards
To know - water as a hazard
To know - water as a hazard
To be able to - identify and describe the impact of hydrological hazards in Australia
To be able to - identify and describe the impact of hydrological hazards in Australia
hydrological hazards
hydrological hazards
In Australia, there are two types of natural hazards associated with water. These are cyclones and floods. We call these types of hazards hydrological hazards.
In Australia, there are two types of natural hazards associated with water. These are cyclones and floods. We call these types of hazards hydrological hazards.
cyclones
cyclones
Cyclones are tropical storms of extremely low pressure. They form over warm water and travel south due to a process called the Coriolis Effect, which makes water spin different ways in different hemispheres.
Cyclones are tropical storms of extremely low pressure. They form over warm water and travel south due to a process called the Coriolis Effect, which makes water spin different ways in different hemispheres.
Cyclones are known for having damaging winds, which can destroy property and crops.
Cyclones are known for having damaging winds, which can destroy property and crops.
The wind and rain from a cyclone also creates something called a storm surge, where the sea rises during a cyclone which floods areas with salt water.
The wind and rain from a cyclone also creates something called a storm surge, where the sea rises during a cyclone which floods areas with salt water.
In QLD, cyclones can often lead to floods.
In QLD, cyclones can often lead to floods.
Are there any cyclones?
Are there any cyclones?
floods
floods
Floods are caused by massive amounts of rainfall, raising inland water resources (like rivers) and the water table.
Floods are caused by massive amounts of rainfall, raising inland water resources (like rivers) and the water table.
Floods normally occur in places that are located near rivers, but also low-lying places.
Floods normally occur in places that are located near rivers, but also low-lying places.
You'll find a lot of cities were built around rivers for transport and people still live in these places today.
You'll find a lot of cities were built around rivers for transport and people still live in these places today.
2022 Floods
2022 Floods
During February 2022, a huge low pressure system sat over SEQ and Northern NSW, drawing in moisture and heat from the Coral Sea. In less than three days, these areas saw over 1000mm of rain.
During February 2022, a huge low pressure system sat over SEQ and Northern NSW, drawing in moisture and heat from the Coral Sea. In less than three days, these areas saw over 1000mm of rain.
Brisbane
Brisbane
In Brisbane 177 suburbs were impacted with more than 23,000 homes inundated.
In Brisbane 177 suburbs were impacted with more than 23,000 homes inundated.
Throughout South-East Queensland, more than 20,000 homes were inundated and power outages affected over 51,000 properties. All public transport services were shut down lasting for several days, including rail, buses, and City Cat ferries.
Throughout South-East Queensland, more than 20,000 homes were inundated and power outages affected over 51,000 properties. All public transport services were shut down lasting for several days, including rail, buses, and City Cat ferries.
Overall, this natural disaster did $2.5 billion worth of damage in Brisbane.
Overall, this natural disaster did $2.5 billion worth of damage in Brisbane.
Lismore
Lismore
In Lismore, around 5000 homes have been damaged with estimates of 12,000 -14,000 people displaced.
In Lismore, around 5000 homes have been damaged with estimates of 12,000 -14,000 people displaced.
The entire CBD and industrial zones have been wiped out.
The entire CBD and industrial zones have been wiped out.
Four people also died during the flooding in Lismore. Emergency services were blocked, so people began saving themselves/each other using personal watercrafts.
Four people also died during the flooding in Lismore. Emergency services were blocked, so people began saving themselves/each other using personal watercrafts.
Task 1 - Impacts of the 2022 floods in Brisbane
Task 1 - Impacts of the 2022 floods in Brisbane
This video is a collection of news coverage from the 2022 floods. While you are watching, list the impacts you see or hear.
This video is a collection of news coverage from the 2022 floods. While you are watching, list the impacts you see or hear.
Task 2 - Spatial distribution of cyclones
Task 2 - Spatial distribution of cyclones
Use this map to answer these questions.
Use this map to answer these questions.
1 - Where do cyclones form?
1 - Where do cyclones form?
2 - Where do typhoons form?
2 - Where do typhoons form?
3 - Where do hurricanes form?
3 - Where do hurricanes form?
4 - What direction do most cyclones move?
4 - What direction do most cyclones move?
5 - What direction do hurricanes move?
5 - What direction do hurricanes move?
6 - Using the map, explain the impact of tropical cyclones.
6 - Using the map, explain the impact of tropical cyclones.
7 - Using the map, identify the places that are vulnerable to tropical cyclones.
7 - Using the map, identify the places that are vulnerable to tropical cyclones.
Task 3 - History of floods in Brisbane storymap
Task 3 - History of floods in Brisbane storymap
Use this storymap to answer these questions.
Use this storymap to answer these questions.
Scroll down to the interactive Historical flooding in January 2011 and February 2022 map
Scroll down to the interactive Historical flooding in January 2011 and February 2022 map
1 - Use the slider to identify three places prone to flooding in Brisbane's CBD. In your answer, refer to streets or popular places.
1 - Use the slider to identify three places prone to flooding in Brisbane's CBD. In your answer, refer to streets or popular places.
February 2022
February 2022
2 - How much rain fell between the 23rd to 27th of February in 2022?
2 - How much rain fell between the 23rd to 27th of February in 2022?
3 - What height did the Brisbane river peak?
3 - What height did the Brisbane river peak?
4 - Why were more properties damaged than the 2011 floods?
4 - Why were more properties damaged than the 2011 floods?
January 2011
January 2011
5 - What caused the 2011 flood in Brisbane?
5 - What caused the 2011 flood in Brisbane?
6 - What height did the Brisbane river peak? Was this higher or lower than the 2022 floods?
6 - What height did the Brisbane river peak? Was this higher or lower than the 2022 floods?
January 1974
January 1974
7 - What caused the 1974 flood in Brisbane?
7 - What caused the 1974 flood in Brisbane?
8 - What height did the Brisbane river peak? How does this height compare to the 2011 and 2022 floods?
8 - What height did the Brisbane river peak? How does this height compare to the 2011 and 2022 floods?
February 1893
February 1893
9 - What caused the 1893 flood in Brisbane?
9 - What caused the 1893 flood in Brisbane?
10 - What height did the Brisbane river peak? How does this height compare to the other floods?
10 - What height did the Brisbane river peak? How does this height compare to the other floods?
11 - What were the impacts of the 1893 flood?
11 - What were the impacts of the 1893 flood?
Scroll down to the interactive photo map
Scroll down to the interactive photo map
12 - Find a photo from each flood and identify the impacts of the flood. In your description, state where the photo was taken.
12 - Find a photo from each flood and identify the impacts of the flood. In your description, state where the photo was taken.
1893 -
1893 -
1974 -
1974 -
2011 -
2011 -
2022 -
2022 -
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