LMPA has had an ongoing weed-management program for many years. The above map is representative of what the lake can look like. Note the red represents dense milfoil. There are some misconceptions about so called beautiful yards. The can be quite harmful to the overall health of a lake.
Think Twice about Lawn and Garden Chemicals
Limit the use of pesticides or fertilizers, and always follow the label directions. Many fertilizers and pesticides contain harmful chemicals which can travel through the soil and contaminate groundwater or run off in stormwater to rivers, streams, and lakes. EPA evaluates pesticides to ensure that when they are used according to label directions they will not harm people, non-target species or the environment.
Read more here: http://water.epa.gov/type/lakes/lakestipsfull.cfm or here