Answer: depending on the shape of land humans could either safely sustain the watershed due to a protected hard reachable land that is impossible for construction or it could lead to an unhealthy watershed if it can be accessible by all humans.
Explanation: Building dams and rerouting rivers are two examples of ways humans directly impact water in watersheds. Humans also use water as a resource, drawing from watersheds for our drinking water. This does not have to be a negative impact, as water usage can be monitored so that it is sustainable.