There were alternatives for Trans Mountain Corporation to digging a trench in the river to lay pipe during the time the salmon were running.
This year is shaping up to be the worst for sockeye salmon in the Fraser River since tracking began in 1893, according to the Pacific Salmon Commission.
One short section of the river that last year at Thanksgiving had more than 100 fish in it, this year on the same weekend had less than 20.
Only one, located in British Columbia's Thompson River, is considered stable.