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Apple Creek - Lower Fox River Watershed Management Program

Apple Creek - Lower Fox River Watershed Management Program . Appleton North High School Appleton East High School. Problem. Total Run-off and its effect on the turbidity and Dissolved Oxygen (D.O.) Content at Apple Creek. About the Sites. We took data from two sites

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Apple Creek - Lower Fox River Watershed Management Program

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  1. Apple Creek -Lower Fox River Watershed Management Program Appleton North High School Appleton East High School

  2. Problem • Total Run-off and its effect on the turbidity and Dissolved Oxygen (D.O.) Content at Apple Creek.

  3. About the Sites We took data from two sites 1. S. Branch French Road – Channelized Stream Housing Development, soccer complex 2. Frontage Rd. near the campground, farmland, and Midvalley Golf Course

  4. Frontage Road Site

  5. French Road Site

  6. Hypothesis • If there is increased run-off/rainfall then the turbidity will increase and D.O. content will decrease.

  7. Observation

  8. Observation Cont.

  9. Observation Cont. D.O. –French Road

  10. Conclusions • According to Waterwatch Australia: • Suspended particles absorb heat. Therefor temperature rises faster in turbid water than clean. Warmer water holds less D.O., so more turbidity should result in less D.O. • According to www.waterontheweb.org: • More oxygen dissolves in water when wind stirs the water because ripples create more surface area, which is where oxygen absorption takes place. • Since windy weather can increase turbidity, an increase in turbidity may sometimes coincide with more dissolved oxygen.

  11. Our Conclusion (French Road Site) • On the French Road Site, we found the Turbidity and the Dissolved Oxygen content were directly proportional (7/10/07-7/7/08, 7/7/08-10/04/08, 7/24/09-9/27/09, 10/09/10-5/06/11) • However one set (5/6/11 – 10/7/11)of dates did not match up and turbidity and D.O. were completely inversely proportional. • In one date set (10/6/07 – 4/25/08), there was hardly any correlation either way.

  12. Our Conclusion (Frontage Rd.) • The data was very conflicting at this site. • Two sets of dates (7/11/05 – 10/8/05 and 7/10/07 -10/6/07) had a weak correlation . • Five sets of dates (10/8/05 – 5/6/06, 5/6/06 – 7/11/06, 4/29/07 – 7/10/07, 7/24/09 – 9/27/09, and 9/27/09 – 5/11/10) support that the two variables are directly proportional. • Three sets of dates (4/25/08 – 7/7/08, 10/9/10 – 5/6/11, and 5/6/11 – 10/7/11) were inversely proportional.

  13. Possible Sources of Error • Time lag between the time it takes for turbidity to affect the water and oxygen to dissolve. • Algae blooms releasing more oxygen into the water • Plants, farm waste, eroded banks, or other materials from run-off decaying and robbing the water of oxygen • The differing speed of water flow(size and quantity of ripples) affecting the surface area available for oxygen to be absorbed • Bed disturbance caused by fish species • Vegetation along the banks

  14. Restated Hypothesis:If there is increased run-off/rainfall then the turbidity will increase and D.O. content will decrease.

  15. Summarized Conclusion • Our hypothesis was partially right. • Increased rainfall did mostly correlate with increased turbidity, although there appeared to be a time lag. • However, increased turbidity did not correlate with less D.O. • The French Road Site suggested the exact opposite • The Frontage road site was very conflicting • Both sites had many unclear data points • We suspect the D.O. often didn’t match our hypothesis because windy weather could increase both turbidity and D.O. content, even though normally turbidity can result in warmer water temperatures reducing D.O. content.

  16. Thank You! Any Questions?

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