There are so many ways to explore our natural world. Here are five to consider. Discover the National Water Trails System It’s a network of 22 river, lake and other waterway trails, designated as such by the U.S. Department of Interior. The system offers families vacation and recreational opportunities in scenic regions of the U.S. In southwest Ohio, families can access 291 miles of paddling, fishing and wildlife-watching fun on three rivers and numerous smaller tributaries, including the Great Miami River, Stillwater River and Mad River, as well as Twin, Greenville and Buck Creeks. The Great …