Stormwater runoff originates during precipitation when water flows over the ground. Impervious surfaces, such as streets and rooftops, increase runoff by preventing water from soaking into the ground. Water running over impervious surfaces can pick up sediment, chemicals, debris, and toxins which are carried to local waterways. These pollutants prevent waterways from being fishable and swimmable.
Stormwater runoff is capable of causing nuisance flooding, can negatively impact property, and may be caused by neighbors’ attempts to correct their own flooding issues. Landowners impacted by stormwater runoff should consider educating themselves on their rights and responsibilities, take steps to document the problem, communicate with neighbors and agencies, and seek mediation if the situation cannot be resolved amicably
Impervious surfaces* such as roofs, increase runoff by preventing rain water from being absorbed into the ground. In precipitation events, stormwater runs over impervious surfaces and picks up pollutants such as nitrogen, phosphorous, suspended sediments, organic chemicals, heavy metals, and oil which are washed directly into our storm systems and local waterways.