Secondly, dense vegetation can filter pollutants. Research has proven that shrubs and trees slow down the rush of water after storms. This is important even if your property does not flow directly to a local stream. Contrary to popular belief, storm sewers do not carry storm water waste to waste water treatment plants. Water that flows into storm drains or sewers end up in the nearest water body.
Plants can also reduce flooding downstream.
When flooding occurs upstream, plants on the streambank intercept floodwaters, slowing them down considerably. In addition, plants offer an important habitat for wildlife. Make sure that you have a professional landscaper, arborist, or forester look at your property and provide you with a plan of action for revegetating any areas that have been cleared of vegetation either due to the 1998 Labor Day storm or because of new construction. This is called a riparian buffer, and is an important element in controlling erosion on the streamside. Riparian buffers also help to shade the stream, and cooler waters are healthier for fish and other aquatic life.