We installed additional subsurface drainage in #6 approach and fairway last week. The green on #6 funnels water directly onto the approach resulting in wet and soggy conditions at the end of the growing season and throughout the winter dormancy period. Drainage installation is a very involved process which starts by locating existing subsurface drain lines. New lines are painted out where needed and the the area is covered in plywood to minimize damage. A trenching machine is then used to excavate the new lines and the soil is hauled away.
The new trench is then cleaned out by hand using a small narrow shovel. Pea gravel is then used to cover the bottom of the trench and helps to grade the trench so the water will drain.
New perforated pipe is laid in the trench and connected to the existing drain lines using couplers. More pea gravel is placed on top of the pipe to help control contamination of the perforations in the pipe by soil and other material which would limit the water from entering the pipe and draining the area.
Sand is now placed in the trench so that water can easily be drawn from the surface and subsurface into the trench to be carried away by the drain pipe. Below is a picture of the finished installation. We will allow time for the new lines and sand to settle before we cover them with new sod.
