little river ditches watershed monitoring project 11-2000s
DESCRIPTION
Little River Ditches Watershed Monitoring Project 11-2000S. Jennifer L. Bouldin, PhD Ecotoxicology Research Facility Arkansas State University. arkansaswater.org. Little River Ditches. Shared with MO and KY ~ 25% in AR Intensive row crop agriculture. www.epa.gov. Land Use. - PowerPoint PPT PresentationTRANSCRIPT
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Little River Ditches Watershed MonitoringProject 11-2000S
Jennifer L. Bouldin, PhDEcotoxicology Research Facility
Arkansas State University
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arkansaswater.org
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Little River Ditches
• Shared with MO and KY• ~ 25% in AR• Intensive row crop
agriculture
www.epa.gov
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Land Use
• 81.4% cropland• 11% forested
arkansaswater.org
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MRBI sampling
• ISCO sampler set for runoff events• 24 ISCO containers analyzed
individually– Total solids (g/time)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 2402468
101214 MTN total solids 17 June 2011
MTN site
Gram
s sol
ids
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Measured Parameters
• pH• Dissolved Oxygen• Total Suspended Solids (TSS)• Turbidity• Dissolved Nitrate, Nitrite,
Orthophosphate• Total Nitrogen,
Total Phosphorus
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• Ditch Number 4-Buffalo Creek – HUC#080202040806
• Ditch Number 56 – HUC#080202040807
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Site 1
21642415 1242
1714
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Site 2
10782520
162614202340
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Site 3
15861248
2451
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Site 4
2457 16862052
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Site 57.5
17964430
17463280
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Site 76.7 5.2
1510 459017023640
2200
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Preliminary results
• High flow vs. low/no flow conditions vary nutrient and TSS values
• Sediment and nutrients values much higher in primary ditches – More TSS spikes in 2013 due to rainfall
• Comparison of edge-of-field data to instream data will determine direct input from field
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Questions?
Thanks to ANRC, Kyle Cassidy, students and technicians at Ecotox