Table of Contents

• Prequiz...
• Part I: Where's my watershed
• 1: Counting streams
• 2: What's your order
• 3: Outlining Watersheds
• 4: Outlining the Bay
• Part II: What's my watershed like?
• 5: What enters the watershed?
• 6: Paving the watershed
• 7: Sampling pavement
• 8: Muddying the waters
• Part II: Who's in my watershed?
• 9: Meet the model
• 10: ...Just how many are there?
• 11: ...And where do they come from?
• 12: How do microbes grow?
• Part IV: Counting colonies
• 13: A day in the life (of a microbe)
• 14: Building the growth equation
• 15: Visualizing the growth equation
• 16: How do we count them all?
• 17: Pick your plate
• 18: Putting it all together

Putting it all together

It’s time to put it all together and use what’s you’ve learned about watersheds and water quality. 

1. Predict which of these 3 sites will the worst water quality
   (>400 cells / 100 mLs).
2. Confirm your prediction by sampling and counting enterococci.
3. Identify the factors that affect water quality at each site.

 

Think carefully about where sources of contamination might be coming from, the amount of impervious surface, and the size of the stream. When you make your prediction, check it in the applet below.

So were you right? What do you think each of the factors had to do with water quality?

Sources of contamination

Stream size Two of the sites were second order.

Impervious surface.

Overall

 

 

 

If you want a printer-friendly version of this module, you can find it here in a Microsoft Word document. This printer-friendly version should be used only to review, as it does not contain any of the interactive material, and only a skeletal version of problems solved in the module.