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METHODS

METHODS. Physical Methods. Steam Profile Discharge Air Temperature Water Temperature Relative Humidity. Chemical Methods. Dissolved Oxygen pH Conductivity Nitrate-Nitrogen Phosphate. Image Source: Colemanpalmer.com. Bacterial Methods. E. coli. USDA Tree Risk Assessment.

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METHODS

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  1. METHODS

  2. Physical Methods • Steam Profile • Discharge • Air Temperature • Water Temperature • Relative Humidity

  3. Chemical Methods • Dissolved Oxygen • pH • Conductivity • Nitrate-Nitrogen • Phosphate Image Source: Colemanpalmer.com

  4. Bacterial Methods • E. coli

  5. USDA Tree Risk Assessment • Defect Codes • Probability of Failure • Risk Rating

  6. Watershed Assessment

  7. Tree Coverage • NAIP Imagery • Digitized • QA/QC Photo Source: news.uga.edu

  8. Results

  9. Location 2A/2B counted TNTC on 5/22 and 5/29 • Location 4A also counted TNTC on 5/29

  10. Long Island Creek Phosphate

  11. Marsh Creek Phosphate

  12. Tree Canopy Coverage • Trees have higher albedo than urban landscape • Prevent ‘heat island’ effect • Evaluate rate of urban expansion

  13. Long Island Creek Coverage: 60.311% Marsh Creek Coverage: 48.97% Average Coverage: 55.28%

  14. Long Island CreekConclusion E. Coli Levels coliform have increased since 2012. Most locations had consistent coliform levels that exceeded state standard of 1000 (cfu/100ml)

  15. Long Island CreekConclusion Dissolved Oxygen • Dissolved Oxygen levels were consistently above the state minimum of 4 mg/L • Overall dissolved oxygen levels were up from Previous years except for site 1b • There water temperature is not the only factor that influences dissolved oxygen

  16. Long Island CreekConclusion pH • pH was consistently within the state standard range of 6.8 – 8.5 • In 2014 Long Island Creek continued the trend from 2013 of becoming less acidic • Headwaters were more acidic

  17. Long Island CreekConclusion Nitrates • Nitrates levels were below the state standards of 10mg/L • Nitrates are reasonably lower than the 2013 results • Drastic decrease in nitrate levels at site 2B

  18. Long Island CreekConclusion Phosphates • Phosphates levels were all below the state standard • Phosphate levels were too low to be cause for concern over the past three years.

  19. Marsh Creek Conclusion E. coli • E. coli levels were high enough to require serious concern • Overall coliform levels are less than 2013 but still much higher than 2012 and also exceed the state standard of 1000 cfu/100ml

  20. Marsh Creek Conclusion Dissolved Oxygen • Dissolved Oxygen levels were consistently above the state minimum of 4 mg/L • Overall Dissolved oxygen has increased with the exception of site 4a • Factors other than temperature are affected dissolved oxygen levels

  21. Marsh CreekConclusion pH • pH was consistently within the state standard range of 6.8 – 8.5 • Marsh Creek continued to become less acidic 2014.

  22. Marsh CreekConclusion Nitrate-Nitrogen • Nitrates levels were below the state standards of 10mg/L • Most of the test results showed a positive change from 2013 • High test results were shown for site 6a and 6b as well as site 1a on one test date

  23. Marsh Creek Conclusion Phosphates • 3 separate sites were above the thestate standard of 0.1mg/L • Phosphate have levels have been to low to be cause for concern between 2012 and 2014

  24. Stream Bank Restoration • Avondale Estates, Decatur • 1st order tributary of Cobbs Creek • Under the supervision of Jack White, and Harold Harbert of GA Dept. of Natural Resources

  25. Issues & Concerns • Water channel created due to storm water run-off pipe located at the headwaters of the tributary. • Extreme undercutting, leaving what was once relatively healthy trees with exposed roots.

  26. Goals & Methods • Goal: to slow the movement of water within the channel while diverting the direction of flow • Logs were placed in a zig-zag formation within the water channel. • Coconut netting staked in place near eroded hillsides to slow down water flowing into the scour pit

  27. Stream Restoration

  28. Stream Restoration: Results Results

  29. Questions

  30. APPENDIX • Trends for the years 2012-2014 to follow

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