what geographical features create natural boundaries for water to flow toward one ocean or another?

As water cannot flow uphill, high points in the land such as mountain ridges create natural "divides". These are boundaries that direct where water flows.

Mountain ridges create natural divides.

Thanks ;)

steep areas such as hills, mountains, cliffs etc......

As water cannot flow uphill, high points in the land such as mountain ridges create natural "divides". These are boundaries that direct where water flows.

Water flows down hill, so rivers can't climb up mountains and hills.

ty

why you so damn useful

How about mountain ranges for example ?

What geographical features create natural boundaries for water to flow toward one ocean or another