1. Welcome to Lake McNasty
The tragic story of a polluted lake.

2. Once upon a time there was a beautiful lake with crystal clear water
Once upon a time there was a beautiful lake with crystal clear water. It was so clean you could see right to the bottom, and all the animals were happy. No humans lived around it, until one day…

3. ...people from far away came with barrels of paint and dumped it into the lake. The paint slowly seeped from the barrels into the beautiful lake!
(students dump paint into aquarium)

4. The lake was getting so dirty you could no longer see the bottom
The lake was getting so dirty you could no longer see the bottom. The animals started feeling sick. A few weeks later a boat sailed across the lake and leaked oil.
Students dump vegetable oil into the aquarium.

5. Now the animals were slowly dying off, or leaving the lake
Now the animals were slowly dying off, or leaving the lake. Not many were left when along came garbage trucks every week dumping trash into the lake.
Every student dumps a piece of trash into the aquarium.

6. By the time humans had moved in to the surround lake area, it was so disgusting they started calling it Lake McNasty. The once clean freshwater lake was nothing but a pit of sludge. They were unable to drink it, swim in it, or use it for any purpose.

7. Now the people started to work together to clean up Lake McNasty and return it to it’s original state by picking up trash, and stop dumping toxins. Slowly the lake started to look better, and animals gradually moved back. But it’s still not as clean as it was in the beginning and it may never be.

8. What can you do to keep the water in your environment clean?
The Aquifer Virtual Field Trip: Water, What is it to you?
The Effects of Urbanization on Water Quality

9. Created by: Courtney Kimball & Sara Belt
National Science Education Standards - Contents