While I was visiting Sagawau in Cook County, one of the park employees mentioned that there may be a waterfall in Dellwood Park in Lockport. Since I have a client in Lockport, I already knew that there was a stream in a valley in Dellwood Park, and I was disappointed that it hadn’t occurred to me that there was likely to be a waterfall in that valley. So, the next available weekend, my oldest daughter and I went on a hike to see if we could find a waterfall along Fraction Run Creek…