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LSJR TMDL BMAP 2013 Annual Progress Report: Trends in Nutrients and WQ Targets

Marine Reach. LSJR TMDL BMAP 2013 Annual Progress Report: Trends in Nutrients and WQ Targets. Freshwater Reach. John Hendrickson, SJRWMD Wayne Magley, Ph.D., FDEP Sharon Piltz, FDEP. Dissolved Oxygen Monitoring Stations. LSJR Mainstem BMAP Monitoring Approach & Objectives. Talleyrand.

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LSJR TMDL BMAP 2013 Annual Progress Report: Trends in Nutrients and WQ Targets

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  1. Marine Reach LSJR TMDL BMAP 2013 Annual Progress Report:Trends in Nutrients and WQ Targets Freshwater Reach John Hendrickson, SJRWMD Wayne Magley, Ph.D., FDEP Sharon Piltz, FDEP

  2. Dissolved Oxygen Monitoring Stations LSJR Mainstem BMAP Monitoring Approach & Objectives Talleyrand FDEP USGS Dames Pt. • Combine interagency & multi-platform data to describe river condition, processes • Assess river water quality trends, processes, and targets achievement • Maintain ongoing data acquisition for future WQ model applications and adaptive management Long-Term River Monitoring WBID 2213K Racy Pt. Dancy Pt. Whetstone Pt. WBID 2213L

  3. The Q Half of Load, 2013 Black Creek Flooding - Photo from Florida Times Union - Jacksonville.com

  4. Marine Interface 5/20 LSJR 2013 Bloom Piney Pt. Mandarin Pt. Hibernia Pt. Marine Interface 4/28 Hibernia Pt. 8/12/13 Shands Pier Ramp 10/1/2013 SE Doctor’s Lake, 10/1/2013

  5. LSJR Upstream and Freshwater Reach Nutrient Trends 1995 - 2013 Racy Pt (WBID K) 2013 Mean = 0.056 mg/L 2013 Mean = 1.15 mg/L 2013 Mean = 1.18 mg/L 2013 Mean = 0.088 mg/L

  6. St. Johns River Longitudinal N and P Trend SJRWMD Status and Trends 2013 Report

  7. LSJR TMDL Freshwater Reach Chlorophyll-a 40/40 Target Compliance

  8. Marine Reach Nutrient Trends Assessed at RM 17 (WBID D)

  9. Trends in LSJR Oligohaline Chlorophyll-a, N and P Piney Pt. TN TP N:P Mandarin Pt. Hibernia Pt. *Research suggests that blue-greens thrive under low N:P ratios

  10. Trends in Marine Reach Dissolved Oxygen USGS Continuous Monitoring Station at Dames Point

  11. LSJR Marine Reach Dissolved Oxygen Target Compliance Dissolved Oxygen Monitoring Stations FDEP USGS Dames Pt. • Since 2008, no exceedences of the marine reach DO criteria • Format of LSJR DO criteria now adopted as State-wide Estuarine criteria

  12. LSJR Indicators of Eutrophication Post-TMDLWhat DoTrends Indicate? • Downward trends in N, P (under low flow) and chlorophyll-a, and increase in D.O., concur with TMDL findings and demonstrate effectiveness of nutrient load reduction in improving WQ • Divergence in flow condition trends consistent with point source reduction exceeding nonpoint reduction • Effect of recent meteorological conditions on the proportions of point and NPS load has moved FW worst-case WBID downstream, may be altering the composition of algae blooms

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