The construction of the Keystone College Athletic Field and Track Complex advanced Keystone's progressive history by creating a state-of-the-art venue for soccer, track and field, field hockey, lacrosse, intramurals, and community recreation while using stormwater management practices to protect local creeks, vistas, and ecosystems. Rapid stormwater runoff from rain or melting snow can carry pollutants, topsoil, and excess nutrients into waterways, threatening drinking water, aquatic life, and ecosystems, leading to algae blooms and sedimentation that deplete oxygen, harm fish and amphibians, and damage plant and wildlife habitats, while also eroding streambanks and hillsides and causing aesthetic damage, topsoil loss, and flooding. To address these problems, Keystone College uses stormwater best management practices that filter pollutants before runoff enters waterways, slow water velocity to limit erosion, and promote groundwater recharge. Streamside riparian buffers of trees and vegetation along Tunkhannock and Ackerly creeks filter pollutants, stabilize banks, moderate stream temperature and sunlight, support fish and other aquatic life, and provide nesting and foraging habitat for birds and animals while also helping protect the Chesapeake Bay Watershed. Keystone has also planted more than 100 native trees along the steep banks of the athletic complex, including 70 sugar maples that will become part of its sugar bush and eventually be tapped for maple syrup production. By choosing synthetic turf instead of grass for the athletic complex, Keystone eliminated the need for fertilizers, herbicides, fungicides, and pesticides that could wash into nearby waterways, including an estimated annual reduction of 375 pounds of nitrogen, 150 pounds of phosphorous, and 250 pounds of potassium fertilizers. Across the main campus, mow-free natural areas allow tall grasses to filter runoff and provide wildlife habitat, rain barrels capture roof runoff for irrigation and other non-potable uses through community workshops conducted by the Keystone College Environmental Education Institute, porous greenspaces and natural pathways and parking areas allow water to soak into the soil, and a demonstration rain garden behind Sisson Hall uses porous soil, gravel, and water-tolerant native plants to capture and filter runoff while attracting birds and beneficial insects.