Field tiles that have remained fairly dry for several years may run water frequently or constantly during wet seasons if water tables become high. Tiles that drain natural springs will always run water. During most seasons, farmers realize production advantages by having field drains in place. Drain lines blocked by tree roots will disrupt proper water drainage. Winter melt water and spring rains may not drain adequately to allow early tilling and seeding especially on heavy soils.
Wet soils are cooler and can delay crop germination and growth, reducing crop yields.
Sporadic summer flooding can remain pooled too long in low spots, resulting in crop damage. In late summer and fall, soil may be too soft to permit heavy harvest equipment onto the land. It costs time and money to locate the plug and replace it with new pipe. Farmers depend on a functional drainage system to remove excess field water. Tree plantings added to farmland can also be designed as production investments.