When water lands on an impermeable surface, it runs off, collecting pollution (trash, sediments, nutrients, etc.) as it goes. The more impermeable surface area there is in a given area, the more stormwater runoff will flow into nearby waterways. When water lands on a permeable surface, it soaks in and the larger particles can be filtered out before the water meets up with nearby water bodies.
Reduce the Amount of Impermeable Surface on Your Property
The best way to reduce the amount of stormwater runoff is to reduce the amount of impermeable surfaces. You can do this by keeping paved driveways and pathways as small as possible or, better yet, by using permeable alternatives.
For more information on appropriate applications and maintenance, visit the MN DNR website.