Drainage Design Tools and Resources

Michigan State University

• Multiple calculators/tools for determining drain spacing, pipe capacity, main sizing, etc.
  • https://www.egr.msu.edu/bae/water/drainage/tools

South Dakota State University

• Multiple calculators for determining area drained by different pipe sizes, hydraulic conductivity, drainage coefficient, etc.
  • www.igrowdrainage.org

University of Minnesota

• Multiple calculators for determining pipe diameter, area drained, etc.
  • http://apps.extension.umn.edu/agriculture/water/planning/online-calculator/

University of Illinois

• Go to Subsurface Drainage → Sizing Drainage Pipes (requires user to download a program)
  • http://www.wq.illinois.edu/dg/ 

Transforming Drainage Project

• Multiple calculators/tools for determining drain spacing, drainage rate, controlled drainage suitability, etc.
  • https://transformingdrainage.org 

NRCS website/software

• Download various water-focused Tech Tools
  • https://www.nrcs.usda.gov/resources?title=&resource_type=1970&field_programs=All&field_nrc=13&field_states=All

ADS website

• Calculators to calculate by pipe size or acres to be drained
  • https://www.adspipe.com/resources/ads-design-studio/calculators 

Prinsco website

• Calculators to calculate by pipe size or acres to be drained
  • http://www.prinsco.com/resources/drainage-calculator-by-pipe-size/ 

Ag PhD Drainage Tile Calculator app (iOS and Android)

• Can determine acres drained, required pipe size, pipe length, etc.