a river channel on a delta is
an estuary
a distributary
a flood plain
a guyot

If I'm mistaken I think it is a flood plain hope I helped

While winters are rainy, summers are dry. regions with this climate are usually in the eastern part of the continents. they experience hot, humid summers and colder winters. precipitations have a regular distribution throughout the year, but hurricanes are common.

Its in the national history museum and you can't se the original because its locked away in a vault