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Irrigation and Drainage

In this course you will learn the foundational components of designing, installing, and maintaining irrigation and drainage systems. You will cover case studies using manual and automated sprinkler systems, sprayers and drip irrigation systems, as well as surface and subsoil drainage systems. You will also study efficiently irrigation and drainage principles and practices for a variety of crops, environmental conditions, and soil types in the Pacific Northwest.

What you'll learn

At the end of this course, you should be able to:

  • Solve the physics associated with irrigation system and drainage design and troubleshooting (i.e. power, pressure, friction, and flow).
  • Dissect and identify the various irrigation water sources and components of an irrigation and drainage system.
  • Conduct an irrigation audit, assess the irrigation uniformity value resulting from this audit, and identify methods for improving the irrigation uniformity.
  • Analyze and explain the effects of soil physical properties, environmental conditions, and water quality on irrigation and drainage, and identify methods for improving irrigation application, as well as poor soil and water quality.
  • Select the appropriate irrigation rates, frequencies and timing associated with turfgrass in the PNW.

Turfgrass Management Program

This course is part of the Turfgrass Management Program that includes the following component courses:

Please note: This course is primarily designed for those working in northern climates such as Oregon and Washington, Europe, Scandinavia and parts of Canada; however, course concepts may apply to other climate zones and some information on warm-season grasses is also covered. By focusing on these climates, you'll gain detailed information you can apply to your own park, field or lawn.

Course Hours and GCSAA Class A Credits 

Course Title Course Hours GCSAA Class A Credits
Introduction to Turfgrass Management 30 3
Introduction to Golf Course Management 36 3.6
Pesticide Applicator Education and Safety 18 1.8
Irrigation and Drainage 21 2.1
Cool-Season Turfgrass Diseases and Suppression Using Fungicides 30 3
Turfgrass Mathematics 36 3.6
Turfgrass Insects and Weed Management 36 3.6
New dates coming soon!
6 weeks | Asynchronous
price (2)
$325 (+$60 registration fee)
Additional Information:

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Dr. Alec Kowalewski

Alec has over 17 years of research experience and multiple publications on various cool-season and warm-season turfgrass species obtained while employed at Michigan State University, Abraham Baldwin Agricultural College, the University of Georgia and Oregon State University. Alec is an Associate Professor at Oregon State University and teaches several undergraduate classes in the Department of Horticulture. Alec also provides Extension material for stakeholders in turfgrass and landscape management.

Charles Schmid

Chas Schmid, Ph.D., has over 15 years of experience conducting research focused on cultural management practices for golf course turf. Chas is a faculty research associate at Oregon State University, where he teaches in the undergraduate and PACE programs at OSU.

Emily Braithwaite

Emily Braithwaite is a Faculty Research Assistant at Oregon State University, with research focusing primarily on managing turfgrass diseases.

Ruying Wang
Dr. Wang's current research directions include turfgrass disease suppression using Epichloë endophytes, as well as exploring the carbon sequestration potential of managed turfgrass systems. 

Past Students' Work

Take a look at some recent projects our students have created.