Arizona State University WaterSim
California Avocado Commission Irrigation Scheduling Calculator
California State University, Fresno – Center for Irrigation Technology WATERIGHT
Colorado State University WISE Irrigation Scheduler
Irrigation Assessment Tools
Cornell University Climate Smart Farming Program Climate Smart Farming Decision Tools
Drip-Micro Common Interest Group Drip-Micro Payback Wizard
Field to Market Fieldprint Calculator
Government of Alberta Agriculture and Rural Development Area and Volume Decision Making Tools and Calculators

Irrigation Water Allocation Calculator

Indiana State Climate Office Iclimate
Kansas State University Crop Water Allocator

Crop Yield Predictor

Economic Comparison Tool for Center Pivot & Subsurface Drip Irrigation

KanSched2

Michigan State University Extension Enviroweather

Enviro-weather Project

New South Whales Primary Industries – Agriculture Costing an irrigation system
North Dakota State University, North Dakota Agricultural Weather Network NDAWN Irrigation Scheduling

Daily Estimated Crop Water Use

Oregon State University IMO Irrigation Management Online
Pacific Northwest Extension Irrigation Calculator
Purdue University Irris Scheduler
RainBird Sprinkler Mfg. Corp Irrigation Calculators
Texas A&M AgriLife Extension TexasET Network
Texas A&M University Irrigation Technology Center Furrow Irrigation Tool
Texas Tech University West Texas Mesonet
United Nations – Food and Ag Organization CropWat

FAO Aquastat

FAO AquaCrop

University of Arizona Arizona Irrigation Scheduling System (AZSCHED)
University of Arkansas Arkansas Irrigation Scheduling
University of California – UC Drought Management Irrigation Scheduling
University of California Cooperative Extension Irrigation Management & Agronomy Calculators & Tools
University of Florida Florida Automated Weather Network Citrus MicroSprinkler Irrigation Scheduler
University of Idaho Economic Demand Irrigation Calculator
University of Minnesota Irrigation Checkbook
University of Nebraska Water Optimizer
University of Southern Queensland Scheduling Irrigation Diary
USDA Agricultural Research Service
(Central Great Plains)
Bushland Reference ET Calculator

Dryland Corn Yield Probability Calculator

MultiCalculator

Precipitation Storage Efficiency Calculator

USDA Natural Resources Conservation Service Energy Estimator

Irrigation Water Management Models