Facilities for irrigation would permit substantial increases of agricultural production in Bangladesh. Only with irrigation as a boro crop in the six-month dry season possible. With its continual sunshine and the absence of recurring floods and storms that damage crops in other seasons, this period is potentially the most productive season of the year. In addition to making a third crop possible, facilitates for supplemental irrigation allow marginal shifts in the planting and harvest times of the other rice crops thereby reducing the risk of crop loss in the peak flood season in August and the loss of productivity due to drought at the end of August to November season.