Arizona State University WaterSim
California Avocado Commission Irrigation Scheduling Calculator
California Department of Water Resources California Land Use Viewer
California State University, Fresno – Center for Irrigation Technology WATERIGHT
Colorado State University Irrigation Assessment Tools
Lawn Irrigation Self Audit
WISE Irrigation Scheduler
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
Irrigation Association Tools & Calculators (download from IA website)

Kansas State University Research & Extension Crop Water Allocator
Crop Yield Predictor
Economic Comparison Tool for Center Pivot & Subsurface Drip Irrigation
Irrigation Software
Subsurface Drip Irrigation in the Great Plains Software
Michigan State University Extension Enviroweather
Enviro-weather Project
North Dakota State University, North Dakota Agricultural Weather Network NDAWN Irrigation Scheduling
Daily Estimated Crop Water Use
Pacific Northwest Extension Irrigation Calculator
Purdue University Irris Scheduler
RainBird Sprinkler Mfg. Corp Irrigation Calculators
Texas A&M AgriLife Extension Water My Yard
Texas A&M AgriLife Extension, Texas A&M AgriLife Research Dashboard for Irrigation Efficiency Management (DIEM)
Texas Alliance for Water Conservation Basic Irrigation Calculator
Contiguous Acre Calculator
Cotton Water Use Estimator
ET/Irrigation Scheduling Tool
Resource Allocation Decision Aid 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 California Davis iCrop
Soil Agricultural Groundwater Banking Index
University of Florida Florida Automated Weather Network Citrus MicroSprinkler Irrigation Scheduler
University of Idaho Economic Demand Irrigation Calculator
University of Minnesota Irrigation Scheduling Checkbook Method
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
Precipitation Storage Efficiency Calculator
USDA Natural Resources Conservation Service Energy Estimator
Irrigation Water Management Models