Kaskaskia Watershed Water Quality Assessment J A N E T B U C H A N A N, H E A RT L A N DS C O N S E RVA N C Y S U S TA I N A B I L I T Y S H O W C A S E E V E N T I L L I N O I S S O YB E A N A S S O C I AT I O N J U LY 2 3 , 2 0 1 5
Overview What the Kaskaskia Water Quality project was 10 years ago, What the 2015-16 project will do, and What happens after that - opportunities to implement Best Management Practices.
The 2006 – 2007 Study
Methods: analysis Flow-weighted calculations Statistical analyses (one-way ANOVA) Plotting trends over time (annual means) Comparison to typical nutrient levels
Taking nitrate-N (NO 3 ) as an example…
Taking nitrate-N (NO 3 ) as an example…
Taking nitrate-N (NO 3 ) as an example…
Other Results High P, increasing in Lower Kaskaskia Chemical Oxygen Demand (COD) Increased turbidity High fecal coliform spikes in the 1980’s; then declining
The 2015-2016 Update What will the water quality assessment look at this time? How will it be different?
2014 IEPA 303(d) listed waters 125 stream sections/lakes listed …compared with 109 in 2006
Similarities & differences Same subwatersheds Same methods 14 (or fewer) monitoring stations 1 fewer parameters Fresh BMP analysis
Outreach Presentations in the upper and lower watersheds Kaskaskia Watershed Association Summit presentations Other outreach/workshops
After the Study Ends… Opportunities for watershed planning, implementation grants Groundwork laid to receive state & federal funds! See: Upper Silver Creek and Cahokia Creek, Madison County Information towards BMPs Gets out in front of regulation
Thank You! Any Questions?
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