UMATILLA, Ore. Boaters on the lower Columbia River downstream of McNary Lock and Dam are urged to be aware of dangers of extra ice chunks flowing downstream into the river from the north shore Washington fish ladder, U.S. Army Corps of Engineers officials said.
The dam and fish ladder are on the Columbia River just upstream of the I-82 McNary Bridge.
Thick ice recently formed in the fish ladder during routine annual fish ladder maintenance during January. The ice chunks melting from the ladder will likely float downstream toward John Day Dam and beyond.
This ice emerging from the Washington shore fish ladder in coming days is in addition to ice already on the river due to the very cold weather in recent weeks.