Lake Arthur in Moraine State Park is a man-made lake, formed by creating a dam on Muddy Creek. What year did it open to the public for recreational use? (Don't cheat by searching the Internet for the answer!) Look for the answer here on Wednesday.
Get more local news delivered straight to your inbox. Sign up for free Patch newsletters and alerts.
We’ve removed the ability to reply as we work to make improvements. Learn more here
