PHOTOS: Heavy rain causes pollution runoff into Lake Mendota - WKOW 27: Madison, WI Breaking News, Weather and Sports

PHOTOS: Heavy rain causes pollution runoff into Lake Mendota

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MADISON (WKOW) - Every year, toxic green-blue algae is found in our lakes, sometimes even closing beach fronts. And recent heavy rain isn't helping. The water turns into runoff picking up debris like phosphorous pollution until it dumps into our lakes.

Attached photos from the Clean Lakes Alliance, taken Wednesday over Lake Mendota, show how large these sediment pools can be. Once in the lake, the algae feeds on the phosphorous and can grow quickly, especially when it's warmer during the summer.1 pound of phosphorous can produce 500 pounds of toxic algae.

The best way to help is to reduce the amount of runoff. Homeowners can invest in rain barrels, put down mulch and maintain a healthy lawn. Also, construction companies are expected to have an erosion control plan in place while building. If you see a site has a lot of dirty runoff flowing into storm drains, you can report them anonymously here.

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