Water Rights Calculator

Calculate acre-feet allocation, required diversion rate, and duty of water for irrigation water rights.

Irrigated acres

Duty of water (AF/acre)

Irrigation season (days)

Conveyance loss (%)

Water right (CFS)

Water cost ($/AF)

Tab to move between fields

Gross need (acre-ft)

150

Required diversion (CFS)

0.5

Net need (acre-ft)120

Required diversion (GPM)226

Serviceable acres40

Right adequacy (%)100

Gross volume (gallons)48,877,650

Annual water cost ($)$3,750

How to Use This Calculator

Enter irrigated acres and your water right's duty of water in acre-feet per acre.
Set irrigation season length in days and conveyance loss percentage for your delivery system.
Enter water cost per acre-foot from your district or ditch company.
Optionally enter your decreed diversion rate in CFS to check adequacy.
Review Gross need (acre-ft), Required diversion (CFS/GPM), and Annual water cost to verify your water right covers your needs.

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