Irrigation & Water Management Calculators

Sprinkler Head Zone
Zone Layout
Total Zone Flow
L/min
DU Estimate
%
PR Status (vs generic soil)
Reference: Max Infiltration Rates
Soil TypeMax Rate (mm/hr)
Evapotranspiration
From Tab 1 or manual
ETc
mm/day
Net Irrigation
mm
Estimated Monthly Schedule
Month ETo (mm/day) ETc (mm/day) Runtime (min/cycle) Cycles/week
Flow & Pipe
Adds approx 5×D eq. length
Velocity
m/s
LowOptimalHigh
Friction Head Loss
bar
Pressure Adequate
Drip System Design
Total Flow
L/hr
App. Rate Achieved
mm/hr
Irrigation Runtime
minutes/session
Lateral Pipe Total
m
Zones Required
based on 40 L/min max
Catchment & Tank
Daily Yield Avg
L/day
Demand Satisfaction
%
Mains Saved
/yr
Annual Cost Saving
$/yr (at $2.5/)
Estimated Payback
years
Estimated Monthly Balance
Month Rain (mm) Yield (L) Demand (L) Balance (L)
Site & Climate
Irrigation Zones
Water Supply & Cost
Total Demand
/yr
Harvest + Grey Supply
/yr
Self-Sufficiency
%
Annual Water Cost
$/yr
Annual Saving (vs 100% Mains)
$/yr
Zone Demand Breakdown
Zone Area () Kc Eff. Demand ()