One of Reese’s largest photos shows a female coho salmon in midleap over a cascade created by a beaver dam. Save for a splash of green in the upper right, the dominant hues are brown: silver-brown water, a reddish brown fish, a wide-ranging palette of big leaf maple leaves brown in the fall. The creek’s older name, tʔáwi, is the Lushootseed word for smelt, a small forage fish that once spawned in the creek. These days, however, it is the cohos like the female that are getting more and more attention.
That salmon spawn at all in Longfellow Creek, or, as Reese puts it, “in Seattle just four miles from the Space Needle” is itself a huge victory of a sort. For more than sixty years, there were no salmon at all; the steel plant near the port was diverting the creek for its own purposes, blocking the fishes’ passage. Then those diversions were removed, and salmon were quick to return. Go down to the creek mouth when they are returning, and several dozen might be swimming in slow circles around the pipe that is Longfellow Creek. Some continue up the Duwamish; but some head up the pipe. One year after some community restoration work, volunteers counted about five hundred salmon; in another year, there were eighteen. This year, Reese thinks the numbers are around one hundred or so. “It’s amazing how responsive they are to even the most minor improvements,” he says. “Whether it’s the Elwha or Longfellow Creek, if you give them a chance, they’ll come back.”
In this, Longfellow has benefited from a salmon’s occasional inclination to stray. Biologists suspect that when coho are returning to Elliott Bay, some small number are called by the freshwater of Longfellow Creek, rather than the Duwamish River where they are probably from. This is especially true after huge rain events, when the creek floods—a sign to coho that there is sufficient water for them to swim up it. Now, fish can make it past the steel plant and as far as the golf course before their passage is again blocked, first by a culvert and then a small dam that was erected in the 1940s as a Works Progress Administration (WPA) project. But even without those barriers, the coho of Longfellow Creek face lethal challenges, and it is in that way that the creek becomes part of a larger conversation about the effects of industrial chemicals on fish, and especially one: 6PPD-quinone.
6PPD is the shorthand for N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine. It is a component of rubber tires, in that it prevents them from breaking down so quickly from wear-and-tear. But break down the tires do, and when that happens, little bits of them settle onto the road. When those heavy rains come—or even lighter rains—the little bits of tire and all the chemicals they contain rise with the stormwater and flow from the road down into the nearest waterbody. All of this contamination has devastating effects on returning coho. According to Ed Kolodziej, a professor of civil engineering at the University of Washington [Kolodziej is affiliated with our organization the Puget Sound Institute], and one of the first scientists to draw attention to 6PPD-quinone, up to 90% of them might die before they have a chance to spawn.
The city of Seattle is attempting to remedy some of these toxic ills, building natural drainage systems at three sites in the Longfellow Creek drainage basin that should help clean polluted stormwater before it can reach the urban streams. Work on them is scheduled to be completed in 2024. In the meantime, Reese will continue to watch Longfellow Creek and its longsuffering coho for whatever hope it and they can provide. “I keep wondering if this will be the year when no salmon come back,” he says. “But it hasn’t happened yet.”