Someday soon, water management as currently practiced in this state will be considered primitive. That such a realization isn't already commonly held except among a small subset of hydrologists and a few other water techies isn't surprising, given the vast amount of the wet stuff Minnesota is privileged to possess — for the time being.
The accompanying schematic illustrates an unregulated drainage practice occurring across much of the state that can be bad news for drinking water and soil health, as well as fish and wildlife habitat.
Called "pattern tiling,'' the lines in the photo detail the positions of subsurface drain tiles designed to move water as quickly as possible from a farmland surface to the nearest ditch, stream or even lake.
Subsurface tiling has been around a long time, with early iterations made of concrete and clay. The difference today is the relative speed and ease with which plastic tiling can be positioned underneath a farm field, and the speed also with which it can rush water from a field's surface to the nearest stream, ditch or lake.
When this happens, unless the water is held back by technologies that to date have gained too little traction among farmers, levels of the receiving waterway can rise significantly, sometimes by 5 feet or more. In many cases, these water-level jumps wipe out aquatic vegetation that fish and some wildlife species, among them ducks, need to survive.
This rush of water also carries with it various farmland chemicals that in many cases end up in the Gulf of Mexico, where they contribute to the huge "dead zone'' at the mouth of the Mississippi.
If you think a practice like pattern tiling is regulated in Minnesota, given its impact on public waterways and other resources, you'd be wrong.
In fact, except for a single soil and water conservation district in western Minnesota, the amount of tile laid in the state isn't even documented, and probably never will be, given the power that farmers and farm groups wield at the Capitol in St. Paul.