WQI Lab Resources

There are a variety of resources on this page that will help you with writing your WQI report for Salt Creek and Barker Lake.  Make sure to review the "Organizing a Lab and Lab Report (OLLR)" checklist as you write your report.  You may also want to use some of the suggestions for each section as described below.

Background Information

The following documents should assist you with gaining background knowledge for the WQI lab report.  You do not need to use any of these resources - you can use others that you find on your own instead.  If you do chose to use these documents to further your understanding of water quality testing, make sure to still cite them in your works cited section.

Raw Data/Results

You will need to refer to the following documents in order to effectively write your lab report.  The WQI Test results should be included in your completed report.  The macroinvertebrate chart should help you in writing your hypothesis.  The last website will give you an estimate of the Q-value for your temperature change results - an estimate is okay for this test!  All other tests should be as accurate as possible using the NSF site (4th link).

Section 1: Intro/Background/Hypothesis 

  • State problem/focus of lab
  • State what WQI is as well as history of WQI and the individual tests involved
  • Explain how to arrive at a WQI
  • Identify all variables and assumptions
  • Support hypothesis with background information

Section 2: Planning

  • Do not worry about this section as it is not the focus of this lab

Section 3: Data Collection/Observations

  • Graphs for Q-values for each individual test (9 separate charts)
  • Table for all results with overall Q-value
  • See "Raw Data/Results" Above

Section 4: Analysis of Data

  • Titles for graphs that describe purpose of each test
  • Proper x/y labels/units
  • Scale your Y axis correctly!  Hint: what is the highest possible Q-value?

Section 5: Data Summary

  • Follow OLLR closely
  • Makes sure to include WHY measurements were made

Section 6: Communication of Procedure and Results

  • Use proper vocab from chapter 14 as well as lab text book
  • Be organized/neat
  • This is not an english class, but still take pride in your writing - no grammar/spelling errors!

Section 7: Conclusion

  • Summarize purpose of lab
  • Include WHY the lab was performed in relation to water quality
  • Cite data (WQI Table) and observations (notes and macroinvertebrate chart) that explain why you accepted/rejected your hypothesis
  • Interpret what your results mean for all 9 tests!
  • You should have one conclusion section per test
  • Each individual test interpretation should include the following
  1. What the test is
  2. What the item being tested does to affect WQ
  3. How the item enters to water
  4. Q-values of various locations (4 locations)
  5. Water rating based on Q-value (excellent, fair, poor, etc.)
  6. Comparative analysis of salt creek locations and barker lake
  • Include suggestions for improvement(s)
  • Make connections and analyze error in relation to results (ex. how does fecal coliform affect DO and BOD, or how do nitrates and phosphates cause eutrophication which causes...)  In other words, connect all your tests to one another and analyze how errors that may have occurred possibly affected your results.
  • Include a works cited section!