South of Cochin, situated on a strip of coast between the sea and one of those backwaters that here form the chief means of inland communication.
On the west a series of small lakes and backwaters receives water from the Juba during the rains.
Between Lechlade and Oxford the main channel sends off many narrow branches; the waters of the Windrush are similarly distributed, and the branches in the neighbourhood of Oxford form the picturesque "backwaters" which only light pleasure boats can penetrate.
These form the Cochin backwaters, which consist of shallow lagoons lying behind the beach-line and below its level.
Across, also belongs to this group. It grows in the backwaters of the Amazon, often covering the surface for miles; the seeds are eaten under the name water maize.