Prairie Creek Reservoir is far and away Delaware County’s most prominent “natural” feature. The 1,200-acre lake is enormous, but its surrounding grounds are even more expansive, claimed by some to form the second-largest city park in the entire country¹! I could have picked an easier target, but I’ve been trying to track down a flowing well somewhere near Prairie Creek for seven years. Although I haven’t found it yet, I have managed to stumble across some fascinating hidden infrastructure along the reservoir’s eastern bank.