Designing a sustainable campus means looking at space outside our buildings as well. Low impact development considers techniques such as strategic site design, reducing stormwater run-off and functional landscaping. Various systems on campus relocate water run-off into perforated pipes that allow water into the soil and into rain garden planting areas instead of storm drains. Rain gardens both retain and filter stormwater, providing benefits to the local watershed and stream systems by encouraging stormwater infiltration and reducing erosion. We also have green roofs and planted areas over structures that filter the water and contribute to our goal of reducing campus stormwater run-off 'down the hill' into the lake.