Drainage Slide Rule

Gary Sands

NOTE: This is a Web Sampler. Ordering information is available here.

Pocket sized agricultural drainage calculator enables the user to:

compute required pipe size for given drainage area;
compute acres drained for given pipe size/grade;
estimate permissible flow velocities for any pipe size, based on grade;
compute flowrates for pipe sizes/grades. Features of the calculator are: functionality for both corrugated and smooth-wall materials, roughness coefficients are built-in, other design and look-up tables are included.

Other Resources

Agricultural Drainage Publication Series: Soil Water Concepts, Reviewed 2009. University of Minnesota Extension.

Agricultural Drainage Publication Series: Planning an Agricultural Subsurface Drainage System, Reviewed 2009, Pub.#07685. University of Minnesota Extension. To order call 800-876-8636

Agricultural Drainage Publication Series: Issues and Answers, Reviewed 2009. University of Minnesota Extension.

Websites

Drainage Outlet
Department of Bioproducts and Biosystems Engineering

In accordance with the Americans with Disabilities Act, this material is available in alternative formats upon request. Please contact your University of Minnesota Extension office or the Extension Store at (800) 876-8636.