Water Sample Results

2016 Bad Medicine Sample Results

Jim Eisele

In 2016, the BMLAA again took water samples for analysis each month from May through September.  We are pleased to report that Bad Medicine continues to been one of the clearest lakes in the state, and it also has one of the best quality water.

The charts show that there is no negative or positive trend over the last 4 years in the water quality.

·      The phosphorus chart shows a measure of the phosphorus in the lake. Phosphorus is a nutrient important for plant growth.  Phosphorus has a direct effect on plant and algal growth in lakes – the more phosphorus is available, the more plants and algae there are in the lake.  Phosphorus originates from a variety of sources, many of which are related to human activities. Major sources include human and animal wastes, soil erosion, detergents, septic systems and runoff from fertilized lawns.

·      Chlorophyll-a is the pigment that makes plants and algae green.  This pigment is what allows plants and algae to photosynthesize so less chlorophyll is better.

·      A Secchi disk is used to meaure the water clarity.  Although water clarity varies quite a bit during each year, he chart shows that the clarity is essentially unchanged over the last 17 years.

Click on this link to see the phosphorus, chlorophyll, and Secchi disk charts:  2016 Water Quality