There are quite a few dams on the Nile River, including just outside Bahir Dar where there are two power generation plants near the Blue Nile Falls, sending energy to Addis Ababa. Our local guide told us that the Blue Nile Falls is the second biggest waterfall in Africa after Victoria Falls. Ha! No comparison if you ask me, although if the full river volume was allowed over the falls it would be much wider than what you see in the photos below.
Whenever we met up with the Nile river, then you saw all the signs of life: green trees (especially date palms) and other growing crops, animals, people, and towns. It is like a long, winding oasis. Amazing differences, as you can see below. Now we are waiting to take a ferry up the Nile across Lake Nasser (Lake Nubia on this side). to Aswan in Egypt. Probably we will see more of the same contrasts there (my mum says it is a contrast between fertile and hostile).