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  Student Handout #4 – Water Quality Analyst Assignment

Knowledge Base
Meet with the reporter, meteorologist, and landuse planner to discuss your responsibilities and expertise.

Experimental Design
Develop a strategy for collecting information about possible changes in turbidity in the lake following a major rainstorm. Answer the following questions as a part of developing your strategy and be prepared to explain your decisions:

  1. Should your data include turbidity values for each zone (epilimnion, metalimnion, hypolimnion, thermocline) or for specific depths? Be prepared to explain why.
  2. What data will you use as your starting point for your graphs of turbidity? (The actual values at the beginning of the rainstorm, or some type of average values, or ??).
  3. Over what period of time should you collect and graph your turbidity values (for how many hours/days?)
  4. Considering the data available, how many measurements should you collect and graph to illustrate the impacts of a rainfall on turbidity?

Data Collection
When you have developed your strategies, collect the information needed.

Data Management and Analysis
Plot your data as a graph(s).

Interpretation of Results
What does your graph indicate about the impacts of a rainfall on turbidity? What additional information would you like to collect before you would be very confident in making generalizations about the relationships between rainfall and turbidity?

Reporting Results
Make sure your group reporter has the information needed for the final report.


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date last updated: Saturday March 06 2004