The wreck of "New Carissa" caused one of the most serious oil spills to affect the state of Oregon, and the worst since a 1984 spill near Longview, Washington that dumped of oil into the Columbia River. As Oregon has no significant oil refinery facilities, oil tankers do not often dock at its ports, making the state relatively safe from oil spills. Analysis conducted by the U.S. Fish and Wildlife Service determined that over 3,000 shorebirds and seabirds perished. The birds belonged to more than 50 species. Among the birds killed were 262 threatened marbled murrelets and between four and eight endangered western snowy plovers. Harbor seals, fish, and shellfish were also killed or affected. Several beaches were fouled, with tarballs continuing to wash up for more than a month after the wreck.