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Lake Water Quality Modeling and Monitoring Data for Peltier and Centerville Lakes

This dataset includes monitoring data and in-lake modeling for total phosphorus, chlorophyll-a, and Secchi depth in Peltier and Centerville Lakes. The data covers the period from 1991 to 2006 for Peltier Lake and from 2000 to 2006 for Centerville Lake, during the growing season. The dataset also includes dissolved oxygen measurements and compares total phosphorus levels at the surface versus the bottom of the lakes. The modeling approach used is the Bathtub model, developed by the U.S. Army Corps of Engineers, which accounts for water and nutrient balance in a spatially segmented hydraulic network.

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Lake Water Quality Modeling and Monitoring Data for Peltier and Centerville Lakes

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  1. RICE CREEK CHAIN OF LAKES TMDL

  2. PELTIER LAKE TOTAL PHOSPHORUS MONITORING DATA

  3. PELTIER LAKE TOTAL PHOSPHORUS MONITORING DATA, 2006 outlier removed

  4. PELTIER LAKE CHOLORPHYLL MONITORING DATA

  5. PELTIER LAKE SECCHI DEPTH MONITORING DATA

  6. PELTIER LAKE 1991 – 2006, growing season

  7. PELTIER LAKE DISSOLVED OXYGEN

  8. PELTIER LAKE TOTAL PHOSPHORUS - SURFACE VS BOTTOM

  9. CENTERVILLE LAKE TOTAL PHOSPHORUS MONITORING DATA

  10. CENTERVILLE LAKE CHOLORPHYLL MONITORING DATA

  11. CENTERVILLE LAKE SECCHI DEPTH MONITORING DATA

  12. CENTERVILLE LAKE 2000 – 2006, growing season

  13. CENTERVILLE LAKE DISSOLVED OXYGEN

  14. CENTERVILLE LAKE TOTAL PHOSPHORUS - SURFACE VS BOTTOM

  15. IN-LAKE MODELING • Bathtub: Reservoir water quality model developed by the U.S. Army Corps of Engineers • Includes models for TP, chlorophyll-a, and Secchi transparency • Steady-state water and nutrient balance calculations in a spatially segmented hydraulic network; accounts for advective and diffusive transport and nutrient sedimentation

  16. MODEL STRUCTURE Upper Rice Creek Clearwater Creek Hardwood Creek Internal Centerville direct drainage Direct precip Centerville Lake Direct precip Peltier direct drainage Peltier Lake Internal

  17. PRECIPITATION

  18. MODEL SELECTION • Phosphorus: Canfield & Bachman, lakes (option 8) • Chlorophyll-a: P, light, T (option 2) • Secchi transparency: vs. Chl-a and turbidity (option 1)

  19. MODEL CALIBRATION • Phosphorus calibration coefficient - adjusted from 1.0 to 0.6 for Peltier Lake • Chlorophyll-a calibration coefficient - adjusted from 1.0 to 1.5 for both Peltier and Centerville Lakes • Internal loading rate adjusted to further calibrate model

  20. INTERNAL LOADING • Sediment data

  21. CALIBRATION - 2001

  22. VALIDATION - 2004

  23. PELTIER LAKE TP LOADS Watershed loads represent 48% of total load

  24. CENTERVILLE LAKE TP LOADS

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