Water Quality

2017 Lake Minnie Belle
Lake Monitoring Report
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TSI: Trophic State Index is a measurement of overall lake productivity (Nutrient enrichment). The overall TSI of a lake is the average of the TSI for phosphorous, chlorophyll-a and secchi depth.

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Secchi Number        + Math Conversion = TSI

Total Phosphorous  + Math Conversion = TSI

Chlorophyll-a           + Math Conversion = TSI

                                                          TOTAL = TSI

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TP (Total Phosphorous): The amount of organic and inorganic phosphorous within a lake. Organic phosphorous indicates includes detritus, feces, dead leaves and other organic matter.

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Chlorophyll-a: The pigment that makes plants and algae green. Chlorophyll-a is measured in lakes to determine algal concentration.

Download The 2017 Report (.pdf)

SAMPLE DATE

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5/22/2017

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6/26/2017

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7/19/2017

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8/23/2017

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9/11/2017

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ANNUAL SUMMER MEAN

TSI AVERAGE

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43

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39

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42

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43

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39

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41.2