Twelve lakes with public accesses within Le Sueur County were evaluated in 2014 and 2015 to determine the potential for AIS introductions and the ecological and recreational consequences. Lake sediment surveys and water quality data were also collected for all 12 lakes. The information collected from these studies can help staff with future AIS management decisions.
Le Sueur County completed carp assessments in the summer of 2019. The intent of completing these assessments is to have a better understanding of the total biomass of carp that exist within each lake. Using a model we then can correlate the carp biomass and how it affects water quality.
At the time of sampling, the common carp populations present in 9 out of the 11 sites (82%) were estimated to be exceeding the biomass density threshold known to be problematic to water quality (89 lbs/acre). Estimated biomass densities varied from 3-12 times the impact threshold of 89 pounds per acre, with approximately 400,000 individuals estimated to exist between the 11 lakes sampled.
To review the 2019 Common Carp Assessment project more in detail, please click on the link below.