Surface drainage is any system that collects rainwater on top of the ground and moves it off the property before it can pool, soak in where it shouldn't, or reach the foundation. The main types are grading, swales, channel (trench) drains, catch basins, and downspout extensions with pop-up emitters. Most Austin properties need a combination, chosen by where the water lands and where it can be sent. Scott Lockhart Drainage Contractor has designed and installed surface drainage