Steelhead struggling home in record low numbers – Seattle Times


Global warming effecting salmon. So many variables outside our control.

Salmon and steelhead are in hot water — a problem scientists warn is going to get worse because of climate change. Steelhead returning this year to the Columbia and Snake rivers migrated out of the river during horrendous conditions in 2015, which included record low flows and high water temperatures. Those steelhead also were at sea during the so-called “blob” — a mass of warm water that began forming off the West Coast in 2013 and wreaked havoc in the ocean, including depressed food supplies for marine animals of all sorts. Now those steelhead are migrating back through reservoirs where water temperatures at some Columbia and Lower Snake River dams, thanks to a record Northwest heat wave, have been stuck this summer above 70 degrees for days on end — potentially lethal for salmon and steelhead. Lynda Mapes reports. (Seattle Times)

http://www.seattletimes.com/seattle-news/steelhead-struggling-home-in-record-low-numbers/

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