It is a ...

It is a crop irrigation technique consisting of diverting seasonal stormwater from valleys, rivers, riverbeds and gullies by gravity onto farmland situated at a lower elevation than the flood water. The flood water is then diverted to the fields. This may be done by free intakes, by diversion spurs or by bunds. On the field, there are basically four methods ofwater distribution. Field-to-field distribution, individual field distribution and extensive or intensive distribution. After the land is inundated crops are sown, sometimes immediately, but often the moisture is stored in the soil profile and used later.