NE South Dakota Clark, SD | bgunzy - 3/1/2021 14:10
You need the Iowa Drainage Guide from ISU, special report 13. It has guidance for placement width of tile by soil type in Iowa.
Mahaska: 80-90 ft at 36" depth, 90-100 ft at 48" depth
Taintor: 60-80 ft at 36" depth, 80-100 ft at 48" depth.
Tile will remove excess water (between saturated and plant available) but not take it below plant available. Other than excess cost, I don't see how having tile too close together is going to hurt anything.
"Tiler" Tom can probably provide more details.
I personally feel the IA Drainage guide has spacings too far apart in most situations. Land is $10,000+ per acre, yields and input costs are much higher than 40 years ago also. If you put tile in some of the fields I designed at 4 ft deep, you would not see much water come out. It would for sure not be fast enough to save a crop after a 3 inch rain. |
questions about tile......
