What do fallen leaves have to do with lake health? When leaves on our streets and terraces steep in rainwater, they create a nutrient-rich tea that enters the lakes via storm drains and fuels excess plant and algae growth.
Each year, our urban communities contribute about 30% of the total phosphorus that enters lakes Mendota, Monona, Waubesa, Kegonsa, and Wingra. That’s about 27,000 pounds of phosphorus from leaves, soil, and other urban runoff.
Fortunately, our community has an action plan and is working to prioritize and implement projects in the watershed. If you have a moment—and perhaps a rake—you can help. Here are three ways to start: