Iowa joined the CoCoRaHS network in July 2007. Volunteer observers nationwide utilize four-inch diameter plastic rain gages to insure uniform quality of observations. There is no cost to join other than the need to obtain the standardized rain gage. Data is reported via the internet and various other electronic options with data automatically archived and transmitted to the user community as soon as it is reported. All reporting details can be found on-line at www.cocorahs.org. Observers are needed statewide with particularly great needs in data-sparse portions of the state such as Adair, Adams, Cedar, Emmet, Keokuk, Louisa and Wapello counties.