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2011 Water Quality Monitoring Activities -Crane Lake -Westwood Lake

2011 Water Quality Monitoring Activities -Crane Lake -Westwood Lake. Karen Chandler Barr Engineering March 15, 2012. brain huser is great. 2011 Lake Water Quality Study for Crane Lake and Westwood Lake. Long Term Monitoring Program. Detect Long Term Trends in Lake Water Quality…

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2011 Water Quality Monitoring Activities -Crane Lake -Westwood Lake

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  1. 2011 Water Quality Monitoring Activities-Crane Lake-Westwood Lake Karen Chandler Barr Engineering March 15, 2012 brain huser is great

  2. 2011 Lake Water Quality Study for Crane Lake and Westwood Lake

  3. Long Term Monitoring Program • Detect Long Term Trends in Lake Water Quality… • Land use changes • BMP implementation • In-lake activities • Other, e.g. climate

  4. What is Monitored Phosphorus Chlorophyll a Clarity (by Secchi disc) Basic lake characteristics Zooplankton Phytoplankton Aquatic plants

  5. Crane and Westwood Lake

  6. Crane Lake – Good water quality2011 Data Compared to State Standards

  7. Crane Lake – one concern…1977-1987 Chloride Concentrations(Impaired?)

  8. Westwood Lake – Good water quality2011 Data Compared to State Standards

  9. Recommendation: Purple Loosestrife Manage Purple Loosestrife at Crane Lake and Westwood Lake: Contact MN DNR to introduce purple loosestrife-eating beetles

  10. Recommendations: Chloride Select 1 of 3 options: Monitor Crane Lake in 2014. If Chloride impaired, determine management measures to reduce chloride levels in Crane Lake; or Submit historical Crane Lake data & this report to MPCA & request that Crane Lake be included in the TCMA Chloride Management Plan to be completed by the MPCA in 2014; or

  11. Recommendations: Chloride Submit historical Crane Lake data &this report to the MPCA; monitor chloride concentrations in Crane Lake four times per year (winter, spring, summer, and fall) in 2012 and 2013. If the 2012 and 2013 chloride data indicate the lake is impaired, Crane Lake would be added to the EPA 303d list of impaired waters. Request that Crane Lake be included in the TCMA Chloride Management Plan.

  12. Crane Lake1976-2011 Specific Conductance

  13. Westwood Lake1977-2011 Specific Conductance

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