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Trends in River Flow and Population Dynamics Ryan Birmingham Note on Unlabeled Figure Order Atlanta Buford GA 280 Norcross Roswell Peachtree Creek (not Chattahoochee) Why This Topic The 1996 Olympics The population trend in the county


  1. Trends in River Flow and Population Dynamics Ryan Birmingham

  2. Note on Unlabeled Figure Order Atlanta Buford GA 280 Norcross Roswell Peachtree Creek (not Chattahoochee)

  3. Why This Topic The 1996 Olympics The population trend in the county Fulton: 600k in 1990, 1.1 m in 2000 The water!

  4. The Data Chattahoochee river flow (sampled about once every 15 min, over 1990 to 2000) Peachtree Creek, same data

  5. Summary of Data

  6. Autocorrelation

  7. Xcorr Atlanta Buford GA 280 Norcross Roswell Peachtree Creek

  8. Fitting Curves, single oscillation

  9. Fitting Curves, ‘fourier4’

  10. Manual attempt to remove seasonality

  11. Removing ‘fourier4’ model

  12. Year Boxplot

  13. Month Boxplot

  14. Linear model (flow~year+month)

  15. Response to Month

  16. Response to Year

  17. Conclusions Clearly Not Definitive Seems that there is a suggestion of a trend Flow Fluctuates Wildly

  18. Discussion Lots of Outliers Unable to validate consistently Unable to find detailed-enough data on weather and Lake Lanier activity to remove that component. New Question: What happened to other water sources during 1990 to 2000?

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