Drainage slide rule
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With a pocket-sized agricultural drainage calculator, you can:
Compute the required pipe size for a given drainage area.
Compute the acres drained for a given pipe size or grade.
Estimate permissible flow velocities for any pipe size, based on grade.
Compute flow rates for pipe sizes or grades.
Functionality for both corrugated and smooth-wall materials.
Built-in roughness coefficients.
Other design and look-up tables.
Order your slide rule
Contact firstname.lastname@example.org to order a drainage slide rule or request more information.
Reviewed in 2018