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Household Irrigation Control System - Simplified
Brett Davidson
How a household irrigation system works.
Potential Evapotranspiration rate is using industry standard Penman-Monteith Calculations - data obtained from University of Canterbury experiment as per
https://www.canterbury.ac.nz/media/documents/brochure/sustain/Green_Roof_Appendics_Plus_Rig.pdf
Soil drainage rate is for Clay soil (poorly drained) and is obtained from direct measurement.as described in
https://homeguides.sfgate.com/determine-soil-absorption-rate-drainage-bed-93334.html