Winnipesaukee Environmental & Community Action Network

Stormwater Management

Geographic Area
Statewide
Description
Stormwater is water from rain or melting snow that does not soak into the ground. Stormwater in a forest, meadow, or other natural environment usually soaks into the ground, i.e., infiltrates, or is filtered as it flows along the ground and over native vegetation. When forests and meadows are developed, they are commonly replaced with impervious surfaces such as houses, buildings, roads and parking lots. Impervious surfaces prevent stormwater from soaking into the ground, which create excess stormwater runoff. Stormwater can become polluted when it runs off streets, lawns, farms, and construction and industrial sites if there are fertilizers, dirt, pesticides, oil and grease, or other pollutants in its path. When polluted stormwater is left untreated, it enters our rivers, lakes, and coastal waters and can cause water quality impairments.
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