Our driveway slopes down towards our garage and we would often end up with a small lake when it rained. In 2008 we installed a central drain to redirect the water away from the driveway to the lower side of our property. While this eliminated the lake, we still had some minor puddling, and sediment washed down under our cars. So we decided to pour concrete slabs where we park our cars. To further improve drainage and prepare for the new slabs, we installed a new channel drain running the full width of our driveway.