Water Quality

2017 Lake Minnie Belle
Lake Monitoring Report

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.

Secchi Number        + Math Conversion = TSI

Total Phosphorous  + Math Conversion = TSI

Chlorophyll-a           + Math Conversion = TSI

                                                          TOTAL = TSI

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.

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

SAMPLE DATE

5/22/2017

6/26/2017

7/19/2017

8/23/2017

9/11/2017

ANNUAL SUMMER MEAN

TSI AVERAGE

43

39

42

43

39

41.2