Its gradient
The sides are known as the river bank or river banks.
A river bank is a edge near a land by water
The side of a river where the bank is
St. Paul is located directly on the Mississippi River where it is joined by the Minnesota River flowing in from the southwest. The city center is located on the east bank(north side) of the Mississippi, with West St. Paul and South St. Paul on the west bank (south side).The "twin city" of Minneapolis is located immediately west of St. Paul on both sides of the Mississippi.Saint Paul is the capital city in Minnesota. The city is on the east bank of the Mississippi River and adjoins Minneapolis.Saint Paul is the capital city in Minnesota. The city is on the east bank of the Mississippi River.
the bank of a river
Bank erosion is the process where the soil or rock of a river or stream bank is worn away by moving water. This can be caused by factors such as high flows, wave action, or human activities. Bank erosion can lead to loss of land, habitat destruction, and water pollution.
valley
this is called the left bank
It's called "bank." As in river bank.
As the river winds from side to side, it tends to erode the outer bank and deposit sediment on the inner bank of the bend. Over time, the meander becomes more and more curved.
It is on south (west bank) side of the Missouri River.