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southern MN | I think they were doing 1/10 to 3/10ths slope.
But anything that is downhill will work, if that's what you have to deal with for slope. Doesn't have to be much, but it needs to be downhill.
Here the water table and ground level often intersect each other - prairie potholes, duck ponds, mashes, sloughs, whatever you want to call them.
It just doesn't work to dump water into another area, it only moves the wet spot to a new place.
Discovered that with the neighbor, bought 40 acres, there is an old setup where his 80 is draining into a tile outlet 2 feet off the border. I have a wetland there, about 5-7 acres. I can't drain it, but his tile is dumping water into my wetland a whole lot faster than would be normal. The water wiould all work my way anyhow, but now it piles up deep in the wetland. Back 30 years ago that wetland was kinda wet, but 90% of those 7 acres were farmed. Couldn't now with this tile dumping on me, water gets 2-3 feet deep.
We are looking at fixing that, will be spendy tho. Will be 3/4 mile of tile, and probably need 10 inch or better to make a difference. But, I will gain a couple acres around 3 different wet spots I have all downstream of that tile that drains into my wetland, so worth looking into. As well, neighbor wants to add on to the tile he has, bringing more water my way.... Good guy tho, we are working on making it better, he's not the problem.
Bringing the tile out to the surface and letting it run typically makes as many or more problems than it solves, unless you are discharging into some sort of waterway that flows to the drainage network.
I have a county ditch running through my farm, requires a 12 foot culvert for waterflow, 10,000 acres of drainage is upstrwam of me, those 12 foot openings ran plumb full this spring.
--->Paul | |
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Tile question
