Improving internal water drainage in high tunnel February 10, 2015 by Marilyn OdnealThe east end of the high tunnel tends to collect water. Randy and Jeremy decided to install a tile drainage system to solve this problem. The system was installed today. Trenches were dug about 18 inches deep in the poorly drained area. After the trenches were dug, perforated pipe was put in them. The end of the pipe was covered with screen. The perforated pipe was checked with a level so that it sloped to the east. Gravel was added to any low areas so the water would flow to the end of the tunnel. Pipe connected the two ends of the perforated pile and this ran outside to divert the water. Here is the assembly at the low end of the tunnel with the pipe running outside. The perforated pipe is covered with some gravel and then they will be covered with soil.