A properly designed subsurface drainage system removes the excess water from the root zone in a timely manner to prevent the crop from being under stress. This requires the drainage lines in the field to be properly spaced. The spacing of the drainage lines is dependent on the permeability of the soil. The lower the permeability, the closer the drainage lines are spaced. It is also necessary for the drainage lines to be installed with grade (slope). This is critical to the operation of the system. Subsurface drainage systems typically don't require the level of maintenance that a surface drainage system requires.

Springfield Plastics, Inc. has all of the items you need to properly install your subsurface drainage systems, including single and dual wall plastic pipe, fittings and accessories. These products are manufactured to stand up to the tough demands of the agricultural drainage system.

Conventional drainage is a series of pipes that allows water to flow freely, via gravity, into a ditch or stream as the water table reaches the depth of the drainage pipes.
Properly sized and installed agricultural main lines (collector lines) are critical to the operation of a drainage system. They are the backbone of the system. Both single wall and dual wall pipes are used for main lines.
Managed Drainage is a way to regulate the outflow from subsurface drainage systems by using water table control structures.
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The Correct Drainage Spacing
The effect of drain spacing upon groundwater level and crop damage.