This problem- based learning lesson looks at the increase of stormwater runoff due to effects of humans continuing to develop more and more of the landscape by building roads, streets, sidewalks, factories, etc. Students will analyze the benefits of using green infrastructure to reduce the amount of runoff in their community and increase biodiversity. Each lab group will play the role of a resident in a community. Their goal is to use the engineering design process to create a model showing how they will decrease stormwater runoff and increase biodiversity. The lesson ends with each lab group presenting their green infrastructure plan to a board. Please note that this lesson focuses specifically on the City of Lancaster in PA, however, documents can be modified depending your specific location.