Wed., Aug. 7, 2013 7-foot sturgeon surfaces belly up in Lake Washington Twitter Facebook Reddit This 7-foot sturgeon, discovered by water skier Keith Magnuson, bellied up in Lake Washington in Aug. 2013. ( Keith Magnuson) FISHING -- Despite being 7 feet long, an old-timer has been living peacefully unbeknownst to the masses outside of Seattle, until last weekend. Check it out in this report from KING 5 TV. And this initial report in the Seattle Times. Posted Aug. 7, 2013, 12:58 p.m.