In this presentation, I reported on typical indigenous ways of using Chinook salmon among Gwich’in society of the middle of the Yukon in their modern life, especially focusing on the importance of Chinook salmon as their social resources as well as several levels of conflicts over the use/management of the salmon resource of the Yukon. Also, several social actions to establish a network of cooperation among indigenous societies from the river mouth to headwater, in order to coordinate the interests and (re)acquire sovereign rights for management of salmon resources such as the Yukon River Inter-Tribal Watershed Councils or the Yukon River Inter-Tribal Fish Commission will examine. In their activities, we can find their efforts crossing three different barriers which I mentioned above.