French Drains

A properly designed French drain system does not require an outlet, the water will simply soak into the soil as it flows along the perforated pipe, in fact a French drain doesn’t require an inlet on just one end either. You can construct the drain to accept water along its length and dispurse it underground. Generally a French drain should drop at least one percent in depth for every 100 feet of length. It should usually be installed at least 3 feet from the house, once built it can either be left exposed or covered by several inches of topsoil and grass.