The Iowa Drainage School is taking a year off and expects to return in 2023. 

Consider checking out the 2022 International Drainage Symposium, Aug 30-Sep 2, 2022 in Des Moines, Iowa.


To train stakeholders in sub-surface drainage concepts, planning and laying out drainage systems including surveying a profile, laying out the system, calculating tile line sizes and spacing using actual field data, making connections, and setting up drainage control structures, NRCS program requirements, and fixing common drainage system issues.


This is a three-day school with each day including a combination of hands-on training, lecture and discussion, and problem solving using in-field examples. By attending this school, participants will be able to plan and layout subsurface drainage systems and workout estimated project costs.


  • drainage contractors
  • professional engineers and consultants
  • NRCS professionals
  • county administrators
  • landowners
  • IDDA officials
  • anyone interested in subsurface drainage design and maintenance