Problems faced by Canada’s watersheds Canadian Geography Lester B Pearson High School.
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Transcript of Problems faced by Canada’s watersheds Canadian Geography Lester B Pearson High School.
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Problems faced by Canada’s watersheds
Canadian GeographyLester B Pearson High School
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What do you view as problems with our water
systems in Canada? (Think & Share)
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•Water Quality•Local Water Issues•Water Quantity (later)
Issues Faced by Canada’s Water Resources
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Water quality: Is it good enough for what we want to use it for.
Water Quality
For instance, it may be good enough to swim in it , but not to drink it.
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•Physical – garbage & too many sediments in water
Water Pollution
Sediments are floating dirt particles. Soil erosion & run off into the water is caused by things like agriculture, building new subdivisions. The sediments clog fish gills and chokes out water plants.
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•Biological – bad bacteria & viruses in water
Water Pollution
Facts:-57% of Canadian’s sewage water is treated in a waste water treatment centre- Halifax used to dump 200 million liters of sewage of untreated sewage daily into the Atlantic. They got a sewage plant in 2010!
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•Example of biological water disaster: Walkerton, ON
Water Pollution
In May of 2000, the town’s drinking water became contaminated with a highly dangerous e.coli bacteria. 2,500 people were ill, 7 people died.
This issue is not uncommon in other Canadian communities.
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•Chemical – dissolved metals (ex. lead), medications, oils, fertilizers, pesticides & other toxins
Water Pollution
Fact: -1 drop of oil can make up to 25 liters of water unfit for drinking-We can’t filter-out all the chemical contaminants from our drinking water
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•Great Lake Toxic Hotspots
See pg 484
Water Pollution
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•Eutrophication – too much phosphorus & nitrogen (from our soaps or fertilizers) makes algae grow quickly. When it dies, the bacteria that decomposes it pulls oxygen from the water. Fish & other aquatic animals suffocate.
Water Pollution
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Water Pollution
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Local Burlington Water Issues
• Urban Run-Off: Rain & snow on streets & parking lots goes into sewage drains & into our creeks. Oil, animal waste, road salt, garbage and fertilizers are carried into the water by this run-off.
Local Burlington Water Issues
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Local Burlington Water Issues
• Too many hard surfaces: during rainstorms, if water cannot soak into the ground, then it flows into creeks (runoff) causing them to quickly flood.
Local Burlington Water Issues
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Local Burlington Water Issues
• Covered over streams – many of our creeks have been channeled and covered over in the past. Not good for fish or health of streams.
Local Burlington Water Issues
Creek near Mapleview Mall
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Local Burlington Water Issues
Local Burlington Water Issues
Our Tuck Creek has been put underground in a few places. It is not good for its health.
The city is no longer allow to place creeks underground like this.