National, state and local irrigation organizations on the web.
A list of online irrigation websites with additional tutorials, information and manuals
Additional online calculators and irrigation software.
Agricultural Weather network websites and related station websites for Washington, Oregon, Idaho, Wyoming, Montana, California and Nevada.
Journals provide online publications, scientific information and results from irrigation research.
A large source of irrigation information, practices and manuals
Colorado, Kansas and North Dakota State universities have irrigation extension programs and irrigation information for their areas.