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