Lake Water Quality
Historical Comparison Reports
Historical Comparison
Definitions
PHOSPHORUS
Total phosphorus (micrograms/liter): A measure of nutrients in the water, lower is less nutrients for aquatic vegetation.
CHLORPHYLL
Chlorophyll-a (micrograms/liter): A measure of the amount of Algae in the water, lower is less algae.
TSI
TSI characterizes water’s ability to produce vegetation – higher means more vegetation.
- TSI of 0-30 is oligotrophic, where water is clear, phosphorus is low, and algae is limited.
- TSI of 40-50 is mesotropic where there is an increase in aquatic vegetation due to more phosphorus in the water.
- TSI of greater than 50 is eutrophic with high levels of aquatic vegetation and high levels of phosphorus to support the vegetation.
SEECHI