Drip Irrigation Index

Drip irrigation field guide

Find the right tape, size a watering zone, or build a drip system for your first bed.

A cutaway in dry soil exposes black drip tape below a tomato plant.
Buried drip tape in a California tomato field USDA / Lance Cheung

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Rivulis T-Tape vs. Toro Aqua-Traxx

These two models list 0.22 GPM per 100 ft at 8 psi. Check the filtration, fittings and longest row before swapping reels.

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Rivulis T-Tape versus Toro Aqua-Traxx
SpecificationRivulis T-Tape508-12-220Toro Aqua-TraxxEA5081222-750
Flow at 8 psi0.22 GPM/100 ft0.22 GPM/100 ft
Flow at 10 psiUnverified0.25 GPM/100 ft
Filtration150 mesh140 mesh (105 µm)
Black drip lines run beside rows of seedlings at Rodi Farm in Montana.
Surface drip lines at Rodi Farm, Montana USDA NRCS Montana

From the tap to the bed

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How much water do your rows need?

Calculate your zone flow Calculate irrigation run time Plan drip lines in a raised bed
9.50 GPM

24 rows × 180 ft, using a tape rated at 0.22 GPM per 100 ft at 8 psi.