Created by Group 3:

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Big Walnut Creek

• Created by Group 3
• Amber Gilliland, Jessica Quach, and Jessi Holler

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Assignment

• Pick a watershed
• Gather information about our creek
• Make some hypotheses
• Analyze the data
• Put the information into a PowerPoint presentation

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Methodology

• Printed out data sheet
• Analyzed the data and made hypotheses
• Made graphs based on hypotheses
• Put together our own PowerPoint project
• Combined everyone's PowerPoint project on one
  computer

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BIG WALNUT LAND USE

• MOSTLY AGRICULTURE URBAN.

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Hypothesis 1

• If the TSS (total suspended solids) increased
  the ICI (diversity of insects) and the IBI
  (diversity of fish) decreased.

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H1 Data Analysis -TSS vs. IBI ICI
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H1 Did the Data Support the Hypothesis?

• The data did not support my hypothesis.
• The TSS level in the creek does not significantly
  effect the IBI and ICI level.
• This specific problem does not seem to have a
  great effect on the creek .

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HYPOTHESIS 2

• As the BOD level increases, the ICI IBI level
  decreases.

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H2 Effect of Maximum BOD levels on ICI and IBI
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Conclusion on Hypothesis 2

• The average and maximum BOD did not have much
  effect on the IBI ICI.
• In conclusion, my hypothesis was wrong.

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Hypothesis 3

• H3 The more nutrients you have, the lower the
  ICI and IBI will be.
• We tested the effect of average nitrogen,
  maximum nitrogen, average phosphate and maximum
  phosphate on the ICI and IBI.

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H3 Nitrogen
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H3 Phosphate
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H3 Conclusion

• The data from the four graphs DID NOT support our
  hypothesis since there were no real patterns.
• We believe the graph from the EPA may have been
  based on tests in agricultural areas. The data WE
  used was collected in urban areas with the
  exception of two points.

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Hypothesis 4

• When the QHEI level goes up, the ICI and IBI
  levels also increase.
• We assumed that areas with better habitats would
  have higher IBI and ICI levels.

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H4 Data Analysis
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H4 Conclusion

• Our data set proved that our hypothesis was
  partially wrong. The IBI and QHEI went along with
  our hypothesis, but the QHEI and ICI did not have
  a significant relationship.

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Plans for the future

• Based on our data and tests and the EPA results,
  Big Walnuts condition could be greatly improved.
• Agricultural communities, especially those based
  on our data near station 157 and 91, could be
  monitored and encouraged not to use pesticides.
• The huge urban population in central Ohio should
  be aware that it has an affect on the areas
  downstream of it.

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Wed all like to thank -Melanie, our group
leader -Mr. Steve, Ms. Virginie - Dormy the
invisible dorm dog -The delicious North Commons
food -OSC for the use of its spacious and never
ever stuffy computer room
Amber G.
Jessi H.
Jessica Q.