I WONDER - Can Hydro Power Be Created Without A Dam?

Hydropower is not solely derived from large dams; it can also come from rivers and small turbines. Rivers, especially those flowing down steep hills, can generate energy similar to that of dam water. This fast-moving water is capable of producing hydropower.

What is the significance of steep hills in the context of hydropower?

In what way is hydropower from rivers similar to that from dams?