Drainage Calculator

Calculate by Pipe Size

Our drainage calculator was developed to assist you in the preliminary design and understanding of your drainage needs. We encourage you to contact your local design professional or contractor for more specific design guidance and criteria.

These calculations are based on the Manning's Roughness ASAE EP 260.3 Plastic Tubing Drainage Chart and should be used for estimating purposes only. Consult a Water Table Management Professional for design criteria information

= Definition

Enter the Diameter of the pipe (inches):
Enter the Grade (%):	%
	(see below)

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	Q, Flow			Velocity
	c.f.s.	g.p.m	acre - in./24 hrs.	ft./sec.
GOLDLINE (Single Wall)
GOLDFLO (Dual Wall)

	Acres Drained
	Drainage Coefficient (in: /24 hours)
	1/8"	1/4"	3/8"	1/2"	3/4"	1"
GOLDLINE (Single Wall)
GOLDFLO (Dual Wall)

Calculate by Acreage