Like other deltaic distributaries, they are subject to sudden changes in their channels, and to constant silting up.
Opposite the mouth of the Ganges, however, the intervals between these depths are very much extended by deltaic influence.
The worst cattle are to be found always in the deltaic tracts, but there their place is to a large extent taken by buffaloes.
The villages are built on artificially raised sites, or the high banks of the deltaic streams.
Thereafter, except for deltaic patches at Marsa Susa and Derna, the shore is all precipitous.
