A sizeable number of fish crossing Bonneville are destined to stay between Bonneville and the Dalles. This includes spring creek hatchery tules and some bright and tule stock (hatchery and or wild) from other tributaries such as Little White Salmon and White Salmon and Klickitat.
In addition, some of the URBs pull into cold water refuges at Drano and Underwood and Klickitat until the river cools off a bit. Many of these die of hook poisoning.
And of course many fish die in tribal nets (much of this between The Dalles and McNary but also a lot below the Dalles. Total zone 6 tribal harvest is usually around 100,000 fish.