The point is, big. I've seen a "small" dam in person, which was about 2m high and 10m wide. Such remarkable animals. They need to have a long term plan involvi

The point is, big. I've seen a "small" dam in person, which was about 2m high and 10m wide. Such remarkable animals. They need to have a long term plan involving the topography and where the water will be when they're finished and where the lodge will be at that water level. Site selection is critical. Then they have to implement it one limb at a time, by felling whole trees and limbing and transporting them. And the stamina to do this day after day, year after year. Solid engineering and PM work.