The Lower Susquehanna River Water Trail, from Harrisburg to the Maryland border, is managed by the Lancaster York Heritage Region. This segment of water trail has a system of 21 interpretive signs and includes features such as the Conejohela Flats—a series of low islands that provide habitat and foraging sites for a wide variety of breeding and migratory birds. The Lower Section passes through a tremendous diversity of natural and built environments and cuts through the heart of the Susquehanna Piedmont Gorge. The river has a variety of unique geologic features and important cultural resources including Native American rock art (petroglyphs). The Water Trail passes by a number of power generation areas, including four hydroelectric facilities, two nuclear power plants, a pumped storage plant, and a steam electric station. A water trail map and guide is available at local retailers and outfitters.