The U.S. Army Corps of Engineers stopped spilling water over Bonneville
Dam this morning (March 15), ending nearly four days of spill to help
hatchery-bred juvenile chinook salmon pass the dam safely.
However, as the spill ended this morning at 6 a.m., only about 50
percent of the 7.8 million juvenile tule fall chinook salmon released
from the hatchery had passed the dam on their downstream migration to
the ocean, according to the Fish Passage Center.