 However, with the completion of the Boguchany Dam, and filling of its reservoir, at least part of this section of the river will become navigable as well.Nonetheless, this will not enable through navigation from Lake Baikal to the Yenisey, as none of the existing three dams has been provided with a ship lock or a boat lift, nor will the Boguchany Dam have one.Despite the absence of a continuous navigable waterway, the Angara and its tributary the Ilim were of considerable importance for Russian colonization of Siberia since ca.