The course of a river is determined by multiple factors. The strength of the river's current, the frequency (and intensity) of flooding, the composition of the soil in the bed and on the banks of the river, the number (and size) of adjoining rivers, and the influence of human activity, among other factors, contribute to the course that a river will carve out in its onward progression.
Continental Divide
It doesn't have to be a high ridge, but in any event, it is the 'Continental Divide'.
oklahoma's rivers flow south-east
the Ural Mountains
Rocky Mountains
your MHz ghat gig
south
The Continental Divide (in North America) marks the direction (towards the Pacific or Atlantic and Gulf of Mexico) rivers flow.
Yes
Mexico
South
Concentration gradient determines the direction of flow.