Calculator
Irrigation water cost calculator
Cost per acre and total, from applied depth, price, and acres.
Cost is applied water per acre times the price per acre-foot times acres — pure arithmetic on your numbers. There is no live water price behind this: district water prices vary enormously by contract, source, and year, so the defaults are illustrative only. Enter your own applied depth and contract price.
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Common questions
How do you calculate irrigation water cost?
Multiply the applied water (acre-feet per acre) by the price per acre-foot to get cost per acre, then by the number of acres for the total. Enter your applied depth, price, and acres above.
What does water cost per acre-foot?
It varies enormously — from a few dollars for some senior district contracts to hundreds or more on spot markets in a dry year. Use your own district's figure; the default here is illustrative only.