Spring Chinook salmon are still arriving at the Pelton-Round Butte Complex of dams on Central Oregon’s Deschutes River where they are trapped and hauled upstream to Lake Billy Chinook. And so far partners Portland General Electric and the Confederated Tribes of the Warm Springs are seeing the best annual return of the fish since they began their efforts to reintroduce Chinook, sockeye and summer steelhead above the dams 13 years ago.