Police say three people from outside B.C. are expected to appear in court in November to face charges under the Fisheries Act.

The salmon will be ushered into an off-channel holding pond, where they will be netted and put into oxygenated tanks that will be helicoptered upstream.

The province says in a news release that Premier John Horgan briefed Prime Minister Justin Trudeau on the slide that threatens to block millions of returning salmon.

"Here we are stuck, unable to fish," said Island Outfitters Co-Owner Darren Wright. "It's not fair."

The federal fisheries minister called the slide the Department of Fisheries and Oceans top priority in B.C.

More experts have joined the effort to determine how best to help salmon migrate to a key spawning site upstream.

On Wednesday, officials with the DFO said early data suggests at least 700 fish have made it past the blockage since Friday night.

The slide is blocking the salmon from accessing areas upstream where a majority of the fish spawn each year.

Aerial pictures show intense rapids have formed in the river where the slide occurred, which could make it hard for salmon to swim upstream.

The Kingfisher Interpretive Centre in Enderby is educating almost 50 schools around the North Okanagan on aquatic stewardship.