<P> The Henley - on - Todd Regatta (also called the Todd River Race) is a "boat" race held annually in the typically dry sandy bed of the Todd River in Alice Springs, Australia . </P> <P> It began--and continues--cautiously as a joke at the expense of the original British settlers and the formal atmosphere of the British river races which continue today . Every year in the spring, around September, the town holds a mock regatta which large numbers of locals and tourists attend . Food and drink are sold at stalls, "no fishing" signs are put up, and the celebration takes all day . It is the only dry river regatta in the world; thus, it is the only regatta ever cancelled because of wet weather and there was actually water in the river . This happened in 1993, when the event was cancelled for the year due to flooding . However, the Alice Springs Hash House Harriers and Katherine Hash House Harriers running groups put their boat entry into the water and completed the course under protest of the track officials . This was televised by ABC and shown around Australia on the nightly news . </P>

When is the henley on todd regatta held