Agricultural drainage

• Impact of agricultural drainage in Minnesota
• How agricultural drainage works
• Q&A: Drainage water management for the Midwest

Decide if drainage is right for your farm

• Evaluating a subsurface drainage project and its alternatives
• Key considerations: Planning an agricultural drainage system
• FAQs: Subsurface drainage in the Red River Valley

Plan a drainage system

• Designing a subsurface drainage system
• Pumped outlets for subsurface drainage
• Minnesota drainage guide

Tools and calculators

• Online drainage calculators
• Minnesota drainage calculators
• Drainage slide rule
• Prinsco drainage calculator

Drainage issues and answers

Potential drainage issues and management practices to mitigate them.

Nitrates in Minnesota drainage water

Nitrogen's role in crop production and practices to reduce nitrates in surface waters.

How to reduce nitrogen loads from drained Midwest cropland

Practices that reduce nitrate in the root zone, reduce nitrate delivery to the field edge, or remove nitrate from the field edge or downstream.

• Minnesota drainage law (Chapter 103E)
• Minnesota Public Drainage Manual

Drainage history: The Upper Midwest