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Proposed water standards and antidegradation rules

Proposed water standards and antidegradation rules. The following slides show how current water quality in the Iowa Great Lakes compares to the minimum water quality standard being proposed by the Iowa DNR.

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Proposed water standards and antidegradation rules

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  1. Proposed water standards and antidegradation rules The following slides show how current water quality in the Iowa Great Lakes compares to the minimum water quality standard being proposed by the Iowa DNR. The data used for these slides was collected by CLAMP volunteers and compiled by Iowa Lakeside Laboratory.

  2. Proposed water clarity standard CLAMP DATA 1999-2008 Standard 1.0 meter

  3. Proposed Chlorophyll-a standard CLAMP DATA 1999-2008 Standard 25 µg/L

  4. Proposed Total Phosphorus standard CLAMP DATA 1999-2008 Standard 35 µg/L

  5. Proposed Total Nitrogen standard CLAMP DATA 1999-2008 Standard 0.9 mg/L

  6. Proposed water standards and antidegradation rules The current water quality in the Iowa Great Lakes often exceeds the water quality standard being proposed by the Iowa DNR. Without the adoption of the proposed antidegradation rules, water quality in these Great Lakes could be allowed to be degraded down to the “standard.” To learn more about the proposed antidegradation rules and how to provide public comment, go to www.iaenvironment.org/Antidegradation1.htm

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