Following on the heels of my last post about fond memories floating and swimming in the Ichetucknee River, an old hometown friend sent me this video to share. He produced it to show the holistic and interconnected nature of urban runoff and how pollution ends up in Florida’s numerous creeks, sinks, streams, and rivers. Groundwater flows from place to place as sheetflow and percolates through topsoil here, but once it penetrates down far enough it reaches an immense undergound limestone aquifer. The aquifer links countless waterways (which can appear as either separate or connected on a map). For pollution, accessing the aquifer is akin to taking the subway– or a bullet train — across town.