Beth E' Clarizia, P'E'

1
Drainage Water Management

• Beth E. Clarizia, P.E.
• Agricultural Engineer

2
Drainage in the Midwest
3
Where the Nitrogen is
4
Drainage Water Management Practice Standard 554

• Requirements
• Existing drainage system
• Structure can not restrict drainage when open
• Must have 10 feet of solid drainage pipe with an
  anti-seep collar attached to structure

5
Structure for Water Control Practice Standard 587

• Requirements
• Can not affect neighboring landowner drainage

6
Where do they work?

• Use where grades are lt 1
• Where neighboring land users will not be affected
• Where structures can be planned on existing
  systems (locate and determine influence)

7
The Influence of Slope
The water level control device placed in a tile
line. The area impacted is a function of the
slope of the field. The flatter the field the
greater the area impacted.
8
Drainage Management(Parallel System and Flat
Topography)
9
Raising/ Lowering Levels

• Spring
• Lower the water table for planting
• At least 2 weeks prior to entering field
• After planting/summer
• Raise water table to approximately 18 inches for
  the crops to use (or higher?)
• Stores some water for draught periods
• Fall
• Lower water table for harvest
• Winter
• After harvest, raise water table to the surface

10
Drainage water management

• Before field operations

Boards installed to hold water back when drainage
not needed
Boards removed for full drainage capacity
11
AgriDrain control structure
Hancor control structure
12
(No Transcript)