Extent of available data.
Data Source:MN Pollution Control Agency, Natural Resources Research Institute
Tags:Lakes, nutrients, Water Quality
This data layer indicates lake phosphorus levels. It was developed by the Natural Resources Research Institute using data from the Minnesota Pollution Control Agency. Phosphorus is often the nutrient in most limited supply and thus the nutrient most likely to limit the productivity of plants and algae in lakes and streams. The data were calculated using the 10 year average total phosphorus concentration in lake surface waters for samples collected from May through September. The concentration of total phosphorus, chlorophyll and secchi depth are the three components used to assess lake trophic status.