Catch Basins and Mosquitoes
Catch basins help with rain drainage by receiving runoff. Though often tied to a greater drainage system, water accumulates and becomes stagnant within the basin, particularly between major rain events. Furthermore, organic debris such as grass and leaves often accumulate with runoff, making an organically rich environment. This is an ideal habitat for several mosquito species that can potentially transmit West Nile Virus.
Typically, three treatments are made throughout the year to the 17,000 catch basins within the county.
Treated with

Four Lakes task force






Chippewa Nature Center