Lake Quality Impacts:
Commercial/Municipal
�Large impervious surfaces
�High levels of traffic
�Highly used septic systems
�1.9% of watershed land area in 2003
�Up from 0.4% in 1965
Commercial/Municipal land areas, characterized by buildings with large areas of impervious surfaces, generally have little or no ability to buffer rain hitting the ground, creating potentially destructive runoff and erosion. For the purposes of our study, these areas include businesses, municipal buildings, schools, churches, and gravel pits.