The Lake is also an historical marker of what has been before from large pleasure liners ferrying tourist from Chicago and Milwaukee to lighthouses and power generation plants. The latter make use of the cold water for cooling and water shipping lanes for coal. Some of the coal plants have been converted to gas (e.g., Port Washington) or nuclear (Zion) years ago. I can imagine how things used to be and see how they are. In the future, we will need to take more care of our Lake to remove the corrosive effects of algae blooms and toxic chemicals. After all, the Lake is our fresh water source as well as a source of great pleasure.