Last August, Northwest salmon caught a break when four dams on the Klamath River, which flows from mountain country in southwest Oregon through northern California to the Pacific Ocean, were demolished. But it was a limited break. The goal of that $500 million project, possibly the largest of its kind in American history, remains unreached, and serious effort still is needed to fulfill it. A fully free-flowing Klamath River may be beyond us for a while, but certain half-measures could help.  Hanging over it is the shadow of the decision this month by the Trump administration to abandon a regional agreement involving breach of the four lower Snake River dams in Washington state, also partly for fish run purposes. … Some news stories at the time proclaiming the return of a free run of the Klamath River spoke too optimistically. In Oregon, much of the upper river is blocked by the last two dams, the Keno, west of Klamath Falls and near the same-named unincorporated community, and the Link River, which impounds and partly creates Upper Klamath Lake.

Other salmon restoration and dam removal news:

• Union-Bulletin (Walla-Walla, Wash.): Opinion: Move to end critical fish deal offers no solutions