Given the Nile is over 4,000 miles long it is impossible to answer exactly. However it is estimated at about 11 meters. See link below.
1 foot
The average depth of the Amazon River is about 150 feet.
This continually varies and the link below will detail the cataracts.
Nile River
Egypt has only one river - the river Nile, the longest river in the world.
Loch Morar in the Highlands of Scotland which has a maximum depth of 310m
Nile River
In length river nile is bigger but in ecosystem and plant and fish variety and depth amazon is bigger
The Meghna River in Bangladesh, is one of the three that forms the Ganges Delta. The river has an average depth of 308 meters.
the average depth is is 4m which is 13.1ft and maxium is 12.6 me which is 41.3ft
Egypt's Nile River is probably the most significant of these.
The Nile River.