The article discusses how to manage stormwater at transportation facilities like highways. It covers the basics of water flow and ways to control stormwater quantity and quality. Designers need to consider both local and downstream impacts of runoff. The report describes methods to estimate runoff, control practices, and ways to reduce pollutants from transportation facilities. It also talks about different structural and non-structural methods to manage stormwater efficiently. The article highlights the importance of managing stormwater to meet environmental regulations.