The Indus river provided water for agriculture, but it also overflowed and flooded those cities at times.
Silt.
nile
The Egyptians looked forward to the annual flooding of the Nile river for the enrichment of the fields . When the Nile overflowed its banks it deposited fertile silt onto their farm fields. This was so vital for them to grow their food it many festivals and deities evolved around the inundation.
Many rivers overflowed in the Queensland floods of 2010 and 2011. They included:Brisbane RiverBremer RiverFitzroy RiverMacintyre RiverCondamine RiverDawson RiverMary RiverBurnett River
Provided water for irrigation of fields,silt from the river fertilized the fields along the river banks,and was also used as mode of conveyance up and down the river.
Because the river tone and river parette met so it overflowed and flooded.
Desert and the Nile River Valley. Also the Nile river Delta.
The Nile
The Nile River
The settle
Ancient Egypt could not have existed without the river Nile. Since rainfall is almost non-existent in Egypt, the floods provided the only source of moisture to sustain crops. Every year, heavy summer rain in the Ethiopian highlands, sent a torrent of water that overflowed the banks of the Nile.